epson epl 5500 service manual - diagramasde.com

EPSON TERMINAL PRINTER

EPL-5500SERVICE MANUAL

EPSON4005431

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NOTICE

All rights reserved. Reproduction of any part of this manual in any form whatsoever without SEIKOEPSON’s express written permission is forbidden.

The contents of this manual are subjects to change without notice.

All efforts have been made to ensure the accuracy of the contents of this manual. However, shouldany errors be detected, SEIKO EPSON would greatly appreciate being informed of them.

The above notwithstanding SEIKO EPSON can assume no responsibility for any errors in thismanual or the consequence thereof.

Epson is a registered trademark of Seiko Epson Corporation.

General Notice: Other product names used herein are for identication purposes only and maybe trademarks of their respective campanies.

Copyright © 1995 by SEIKO EPSON CORPORATION Nagano, Japan

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PRECAUTIONS

Precautionary notations throughout the text are categorized relative to 1) personal injury and 2)damage to equipment.

DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury.Great caution should be exercised in performing procedures preceded by DANGERHeadings.

WARNING Signals a precaution which, if ignored, could result in damage to equipment.

The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.

DANGER

1. ALWAYS DISCONNECT THE PRODUCT FROM BOTH THE POWER SOURCE AND PERI-PHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURE.

2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITHBASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS INTHEIR LINE OF WORK.

3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECTTHE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWERSUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ONPOWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

WARNING

1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTI-FIED REPAIR TECHNICIAN.

2. MAKE CERTAIN THAT THE SOURCE VOLTAGE IS THE SAME AS THE RATED VOLTAGE,LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS APRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CON-NECT IT TO THE POWER SOURCE.

3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THEPOWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDSAND/OR INDIVIDUAL CHIPS.

4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATICDISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSINGINTERNAL COMPONENTS.

5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THEMANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER NONAPPROVEDCOMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WAR-RANTY.

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SAFETY INFORMATION

This printer is a page printer which operates by means of a laser. There is no possibility of danger fromthe laser, provided the printer is operated according to the instructions in this manual provided.

Since radiation emitted by the laser is completely confined within protective housings, the laser beamcannot escape from the machine during any phase of user operation.

For United States Users;

[Laser Safety]

This printer is certified as a Class 1 Laser product under the U.S. Department of Healthand Human Services (DHHS) Radiation Performance Standard according to the Radia-tion Control for Health and Safety Act of 1968. This means that the printer does notproduce hazardous laser radiation.

[CDRH Regulations]

The Center for Devices and Radiological Health (CDRH) of the U.S. Food and DrugAdministration implemented regulations for laser products on August 2, 1976. Com-pliance is mandatory for products marketed in the United States. The label shown belowindicates compliance with the CDRH regulations and must be attached to laser productsmarketed in the United States.

WARNING : Use of controls, adjustments or performance of procedures otherthan those specified in this manual may result in hazardous radiation exposure.

[Internal Laser Radiation]

Maximum Radiation Power: 5.0 × 10-4 (W)Wave Length: 790 ± 20 nm

This is a Class IIIb Laser Diode Assay that has an invisible laser beam. The print headunit is NOT A FIELD SERVICE ITEM. Therefore, the print head unit should not be openedunder any circumstances.

For Other Countries Users;

WARNING: Use of controls, adjustments or performance of procedures otherthan those specified in this manual may result in hazardous radiation exposure.

This is a semiconductor laser. The maximum power of the laser diode is 5.0 ×10-4 W and the wavelength is 790 ± 20 nm.

For Denmark Users;

ADVARSELUsynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion.Undgå udsættelse for stråling.

Klasse 1 laser produkt der opfylder IEC825 sikkerheds kravene.

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For Finland, Sweden Users;

VAROITUSLaitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saat-taa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle laser-säteiylle.

VARNINGOm apparaten används på annat sätt än i denna bruksanvisning specificerats,kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen förlaser klass 1.

For Finland, Sweden Service People

VAROITUSAvattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle laser-säteilylle. Älä katso säteeseen.

VARNINGOsynlig laserstrålning när denna del är öppnad och spärren är urkopplad.Betrakta ej strålen.

For Norway Users;

ADVARSELDersom apparatet brukes på annen måte enn spesifisert i denne bruksanvis-ning, kan brukeren utsettes for unsynlig laserstråling som overskrider grensenfor laser klasse 1.

Dette er en halvleder laser. Maksimal effeckt til laserdiode er 5.0 × 10-4 W og

bølgelengde er 790 ± 20 nm.

Laser Safety Labels

[Label on rear printer case]

A laser safety labels is attached on the outside of the printer shown below.

For United State

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For Europe

[Label inside printer]

The following laser safety label will be attached inside the printer as shown below.

For Denmark, Finland, Sweden, and Norway

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PREFACE

This manual describes functions, theory of electrical and mechanical operations, maintenance, and repairof EPL-5500.The instructions and procedures included herein are intended for the experience repair technician, andattention should be given to the precautions on the preceding page. The chapters are organized asfollows:

CHAPTER 1. GENERAL DESCRIPTIONProvides a general product overview, lists specifications, and illustrates the main components of the printer.

CHAPTER 2. OPERATING PRINCIPLESDescribes the theory of printer operation.

CHAPTER 3. DISASSEMBLY AND ASSEMBLYIncludes a step-by-step guide for product disassembly and assembly.

CHAPTER 4. ADJUSTMENTSIncludes a step-by-step guide for adjustment.

CHAPTER 5. TROUBLESHOOTINGProvides Epson-approved techniques for adjustment.

CHAPTER 6. MAINTENANCEDescribes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment.

APPENDIXDescribes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.

The contents of this manual are subject to change without notice.

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REVISION SHEET

Revision Issue Date Revision Page

Rev. A October 06, 1995 1st issue

Rev. B March 15, 1996

Revise the whole pages of thefollowing chapters:

Chapter 1Chapter 2Chapter 3Chapter 4Chapter 5Chapter 6

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Chapter 1 General Description

Table of Contents

1.1 FEATURES 1-1

1.2 SPECIFICATIONS 1-31.2.1 Basic Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.2.2 Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-51.2.3 Reliability Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-51.2.4 Environmental Conditions for Operating (Include Imaging Cartridge) . . . . 1-51.2.5 Environmental Conditions for Storage and Transportation . . . . . . . . . . . . 1-51.2.6 Applicable Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-61.2.7 Specifications for Consumable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-61.2.8 Physical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-61.2.9 Software Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

1.3 INTERFACE SPECIFICATIONS 1-91.3.1 Parallel Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

1.3.1.1 Compatibility Mode of Parallel Interface . . . . . . . . . . . . . . . . . . . . 1-91.3.1.2 Reverse ModeMode Signal Timing . . . . . . . . . . . . . . . . . . . . . . . 1-11

1.3.2 Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-151.3.3 Optional LocalTalk Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17

1.4 OPERATING INSTRUCTIONS 1-181.4.1 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-181.4.2 Printer Settings Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-201.4.3 Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23

1.4.3.1 Heaxadecimal Dump Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-231.4.3.2 EEPROM Initialize Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-231.4.3.3 Factory Reset Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-231.4.3.4 Default Setting Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

1.4.4 Display of Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-271.4.4.1 Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-271.4.4.2 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-271.4.4.3 Service Call Error Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27

1.4.5 Printer Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-281.4.5.1 Port Fixed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-281.4.5.2 Auto Sense Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

1.4.6 Emulation Mode Switch Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-291.4.6.1 Emulation Switch by SPL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-291.4.6.2 Intelligent Emulation Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29

1.4.7 Bi Resolution Improvement Technology . . . . . . . . . . . . . . . . . . . . . . . . . 1-301.4.8 Toner Save Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-311.4.9 Optional Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31

1.5 MAIN COMPONENTS 1-321.5.1 C169 MAIN-B Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-331.5.2 PWB-E Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-341.5.3 PWB-F Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-341.5.4 Optical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-351.5.5 FUSING UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-351.5.6 Photoconductor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

1.5.7 Developing Cartridge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-361.5.8 Lower Paper Cassette Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

List of Figures

Figure 1-1. Exterior View of the EPL-5500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Figure 1-2. Printable Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4Figure 1-3. Compatibility Mode Signal Timing . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9Figure 1-4. Parallel Interface State Switch Diagram . . . . . . . . . . . . . . . . . . . . . 1-12Figure 1-5. Negotiation Timing Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13Figure 1-6. Timing Chart of Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13Figure 1-7. Termination Timing Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14Figure 1-8. Timing Chart of Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14Figure 1-9. Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18Figure 1-10. Port Fixed Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28Figure 1-11. Auto Sense Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28Figure 1-12. Emulation Switch by SPL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29Figure 1-13. Intelligent Emulation Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-29Figure 1-14. Effect of RITech . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30Figure 1-15. RITech Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30Figure 1-16. Toner Save Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31Figure 1-17. Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32Figure 1-18. C169 MAIN-B Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33Figure 1-19. PWB-E Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34Figure 1-20. PWB-F Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-34Figure 1-21. Optical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35Figure 1-22. Fusing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35Figure 1-23. Photoconductor Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36Figure 1-24. Developing Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36

List of Tables

Table 1-1. Options for the EPL-5500. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Table 1-2. Paper Feed Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Table 1-3. Paper Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3Table 1-4. Usability of Special Papers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4Table 1-5. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5Table 1-6. Differences between EPSON GL/2 and GL/2 in the HP LaserJet 4Emulation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7Table 1-7. Built-in Fonts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7Table 1-8. Parallel Interface Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10Table 1-9. Parallel Interface Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11Table 1-10. Serial Interface Connector Pin Assignments . . . . . . . . . . . . . . . . . 1-15Table 1-11. LocalTalk Connector Pin Assignments . . . . . . . . . . . . . . . . . . . . . 1-17Table 1-12. Printer Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20Table 1-13. Service MOde Select Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23Table 1-14. Default Settings Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24Table 1-15. Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27Table 1-16. Differences in Components for the C169 MAIN-B Board . . . . . . . 1-33

Rev. A 1-iii

1.1 FEATURES

The EPSON EPL-5500 is non-impact page printer that combines a semi-conductor laser withelectrophotographic technology. This printer is small and light, and features high-speed,high-resolution printing. Maintenance is very easy as a result of various built-in diagnostic functions.The main features are:

❏ No ozone

❏ Printing speed — 6 ppm (pages per minute)

❏ Resolution — 600/300 dpi (dots per inch)

❏ Light weight — about 5 kg (11 lb)

❏ Small footprint

❏ Low running cost: separation of the development/toner cartridge and photoconductor unit

❏ HP LaserJet 4 emulation mode

❏ 22 built-in scalable fonts (8 Agfa and 14 TrueType fonts)

❏ High-performance controller (the controller’s CPU is a 22.5 MHz SPARKlite (MB86933H))

❏ Bi Resolution Improvement Technology (BiRITech) refines the print quality by eliminatingjagged edges from images and characters on 600 dpi and 300 dpi printing

❏ Memory Improvement Technology supported

❏ Optional EPSONScript Level 2 (PostScript compatible) module

❏ Optional WPS (Windows Printing System) ROM SIMM module

❏ Optional I239X, ESC/P 2 , and FX emulation ROM SIMM module

❏ EPSON Micro Gray Technology (EMGTech), which is available when using PCL andEPSONScript Level 2 mode, refines gray scale printing to be comparable to printing on a1200-dpi printer

❏ Small and low-cost optional LocalTalk with serial interface module

❏ 1MB standard RAM and memory expansion available up to 32MB of RAM with the addition ofoptional SIMMs

❏ Bidirectional parallel interface

❏ Toner-saver mode supported

❏ A multi-user, multi-emulation mode

❏ IES (Intelligent Emulation Switch) allows switching between EPSONScript mode and anothermode

❏ SPL (Shared Printer Language) enables switching of the printer mode by command

Figure 1-1 shows an exterior view of the EPL-5500.

Figure 1-1. Exterior View of the EPL-5500

EPL-5500 Service Manual General Description

Rev. B 1-1

Table 1-1 lists the optional units available for the EPL-5500.

Table 1-1. Options for the EPL-5500

Cat. No. Description Note

C83218✽ Windows Printing System ROM SIMM Supports Windows Printing System

C83219✽EPSONScript Level 2 ROM SIMM Supports EPSONScript Level 2 mode

(PostScript Level 2 compatible) fonts andcommands (see Note 1)

C83220✽LQ/FX/I239X ROM SIMM Supports ESC/P 2, FX, and IBM

2390/2391 emulation modes

—NLSP Bitmap 2 font ROM Supports local NLSP bitmap fonts

(see Note 2)

—NLSP Scalable font ROM Supports local NLSP scalable fonts

(see Note 2)

C812491250-sheet lower paper cassette for theEPL-5500 (A4/B5)

Lower paper cassette

S050005 Developer cartridge Developer and toner cartridge

S051029 Photoconductor unit —

C82334✽ LocalTalk with serial I/F module (see Note 3)

C83614✽ Interface cable RS-232C extension cable for C82334✽

C82335✽ Type-B EX box Type-B I/F card box (see Note 4)

C82307✽/C82308✽

32 KB serial interface card (see Note 5)

C82310✽/C82311✽

32 KB parallel interface card (see Note 5)

C82312✽ LocalTalk card (see Note 5)

C82313✽ GPIB card (see Note 5)

C82314✽ COAX interface card (see Note 5)

C82315✽ TWINAX interface card (see Note 5)

C82324✽ Ethernet interface card for NetWare (see Note 5)

C82328✽ FAX card (see Note 5)

C82331✽ Multi protocol Ethernet card (see Note 5)

Notes:

1. Requires added memory (RAM) over a total of 2 MB, including standard RAM.

2. NLSP font ROMs do not support ESC/P 2 and FX modes.

3. LocalTalk with serial I/F module (C82334✽) cannot be used with Type-B EX box (C82335✽).

4. Type-B EX box (C82335✽) cannot be used with LocalTalk with serial I/F module (C82334✽) .

5. Type-B EX box (C82335✽) must be installed while using the Type-B I/F card.

General Description EPL-5500 Service Manual

1-2 Rev. B

1.2 SPECIFICATIONS

This section provides statistical data for the EPL-5500.

1.2.1 Basic Specifications

Printing method: Laser beam scanning and dry electrophotography

Resolution: 600/300 dpi

Printing speed: 6 ppm (letter/A4)

First printing time (A4/LT): Less than 20 seconds (face-up output)

Warm-up time: Less than 35 seconds (at rated current and 23° C (73° F) temperature)

Paper supply: See Table 1-2.

Table 1-2. Paper Feed Methods

Paper SupplyCapacity Using20 lb. (75 g/m 2)

PaperPaper Size

Usage Thickness(Ream Weight)

Standard built-in paper tray 150 A5, B5, A4, LT,GLT, EXE, LGL,GLG, F4, HL

16 to 24 lb.(60 to 90 g/m2)

5 to 10 Monarch, DL, C5, C6, International B5,Commercial-10

Envelopes madeof 20 to 24 lb. (75 to 90 g/m2)paper

Manual feed slot 1 Any size feedable(Note 2)

16 to 42 lb.(60 to 157 g/m2)

Lower paper cassette (optional) 250 A4, B5 16 to 24 lb.(60 to 90 g/m2)

Notes:

1. The weight in pounds (lb) is determined by the weight of 500 sheets cut to 17 × 22 inches; 1 g/m2 = 0.2659763 lb.

2. Paper size range: width 3 to 8.5 inches (76 to 216 mm) length 5 to 14.0 inches (127 to 356 mm)

Paper types: See Table 1-3.

Table 1-3. Paper Types


Rev. B 1-3

Standard paper Xerox 4024 DP paper20 lb (75 g/m2)

Normal paper Regular photocopier paperBond paperRecycled paper16 to 24 lb (60 to 90 g/m2)

Special papers Card stock (90 to 157 g/m2)EnvelopesLabelsLetterheadTransparency (OHP) sheetsColored paper

Printable Area

4.0 mm

4.0 mm

4.0 mm4.0 mm

Figure 1-2. Printable Area


1-4 Rev. B

Usability of special papers: See Table 1-4.

Table 1-4. Usability of Special Papers

Input OHP Envelopes Labels Card Stock Letterhead

Standard built-in paper tray

P P P P R

Manual feed slot P P P P R

Lower paper cassette N N N N P

R: Reliable feeding and good image quality.P: Possible, but better avoided.N: Not supported.

Paper feed alignment and direction: Center alignment for all sizes

Paper ejection: Face down

Output tray capacity: 100 sheets (face down)

Printable area (standard paper): See Figure 1-2.

Note: The actual printable area depends on the printer mode.

Noise: Less than 35 dB(A), standbyLess than 47 dB(A), operating

Ozone density: Less than 0.01 ppm

Toxicity: No toxicity exists in organic photoconductor (OPC), toner,or plastic materials


Rev. B 1-5

1.2.2 Electrical Specifications

Table 1-5. Electrical Requirements and Ranges

Description 100 V Version 200 V Version

Rated voltage 100 ∼ 120 VAC 220 ∼ 240 VAC

Input voltage range 90 ∼ 132 VAC 198 ∼ 264 VAC

Rated frequency range 50 ∼ 60 Hz

Input frequency range 47 ∼ 63 Hz

Power consumption Less than 500 W Less than 600 W

Power consumption while instandby mode

Less than 15 W(without option)

1.2.3 Reliability Specifications

MPBF (Mean Prints Between Failures): Over 25,000 sheets

Note: MPBF indicates average number of pages printed before occurrence of problem requiringreplacement or service.

MTBF (Mean Time Between Failures): 3000 power on hours (POH)Jam rate: 1 out of 2,000 sheets or less (excluding multiple-sheet feeding)Feed failure: 1 out of 2,000 sheets or less (excluding multiple-sheet feeding)Multiple paper feeds: 1 out of 500 sheets or lessPaper curl height: 30 mm (1.2 inches) or lessLeading edge bending (1 cm or more): 1 out of 1,000 sheetsMTTR (Mean Time To Repair): 30 minutes or lessDurability: 5 years or 180,000 sheets

1.2.4 Environmental Conditions for Operation (Including Imaging Cartridge)

Temperature: 10 to 35° C (50 to 95° F)

Humidity: 15 to 85% RH

Altitude: 2,500 m (8,200 feet) or lower

Levelness: 1°

Illuminance: 3,000 lux or less (Must not be exposed to direct sunlight.)

Surrounding space: Printer should have at least 100 mm of clearance on itssides and rear.

1.2.5 Environmental Conditions for Storage and Transportation



Drop test: Clear to JIS Z0200-1987 Level 1

Vibration: Vibration frequency 5 to 100 Hz and 100 to 5 HzAcceleration 1 GAcceleration direction 3 direction

Resistance to atmospheric pressure: More than 61.3 KPa

Storage life: 18 months (following date of manufacture)


1-6 Rev. B

1.2.6 Applicable Standards

Safety Standards

120 VAC model: UL 1950, CSA 22.2 No. 950 Deviation 3220/240 VAC model: EN 60950 (IEC950), NEMKO (IEC950), SETI (IEC950),

SEMKO (IEC950), DEMKO (IEC950)

Safety Regulations (Laser Radiation)

120 VAC model: FDA (NCDRH) Class 1220/240 VAC model: VDE 0837 (Laser Class 1) (IEC825), SETI (IEC825), SEMKO

(IEC825), DEMKO (IEC825)

EMI

120 VAC model: FCC Part 15 Subpart B Class B, DOC Class B220/240 VAC model: Vfg 243 (VDE 0878 Part 3,30)

EN55022 Class B (CISPR Pub.22 Class B)CE marking, EMC

Others

Toner: No effect on human health (OSHA-TSCA, EINECS)OPC: No effect on human health (OSHA)Ozone: Less than 0.01 mmp

other UL478 (5th edition)Materials: SWISS environmental law (must contain no CdS)

1.2.7 Specifications for Consumables

Life: Developer and toner cartridge: 3,000 pagesPhotoconductor unit: 20,000 pages

Note: In continuous printing mode with A4/letter paper at a 5% image ratio (black/white ratio).The life varies, depending on the printing mode (continuous or intermittent) and/or theimage ratio.

Environmental Conditions for Storage and Transportation



Drop test: Height 76 cm (30.4 inches)Vibration: Same as printerResistance to atmospheric pressure: More than 74 KpaStorage term: 18 months (following date of manufacture)

1.2.8 Physical Specifications

Dimensions (Width × Depth × Height):

Printer: 352 × 264 × 299 mm (13.9 × 10.4 × 11.8 inches)Weight: Approx. 5 kg (11 lb), with consumables, excluding all options


Rev. B 1-7

1.2.9 Software SpecificationsBuilt-in modes: HP LaserJet 4 emulation (PCL 5e)

EPSON GL/2 mode (GL-like mode)Note: EPSON GL/2 mode is similar to the GL/2 mode included in the HP LaserJet 4 emulation.

Table 1-6 shows the differences between EPSON GL/2 mode and the LJ4 GL/2 mode.While in EPSON GL/2 mode, the operator can enter GL/2 mode without sending theESC %#B (Enter GL/2 mode) command. If the operator’s application software cannotsend the ESC %#B command, then use this mode.

Table 1-6. Differences between EPSON GL/2 and GL/2 in the HP LaserJet 4 Emulation

EPSON GL/2 Mode GL/2 for HP LaserJet 4Emulation Mode

PCL mode Not available Initial modePaper eject Supports PG, AF commands Supported in PCLAuto eject SelecType setting Not availableReduced printing SelecType setting Available in PCLSwitch to PCL (ESC %#A)

Not supported Supported

Reset (ESC E) Ejects paper and then initializes Ejects paper, switches to PCL,and then initializes

PJL, EJL, and ES Supported SupportedAdvance full page (PG, AF)

Supported Not supported

Note: The EPL-5500 GL/2 mode features all the commands of the LJ4-GL/2 mode, plus a fewadditional commands. The GL/2 mode emulates some of the HP-GL plotter (HP 7475A,etc.) commands. If the application software uses unsupported commands for the GL/2mode, print cannot be assured.

Optional modes: EPSONScript Level 2 (PostScript Level 2 emulation) modeFX (FX-870/1170, LX-100) emulation modeESC/P 2 (Stylus 800/1000) emulation modeWPS (Windows Printing System) mode

Auxiliary software: Hex dumpStatus sheetFont sample

Built-in fonts: See Table 1-7. Table 1-7. Built-in Fonts

Resident Fonts Applicable ModeHP LJ4, GL/2

Bitmap fontsLine Printer16.66 cpi(Portrait) SScalable fontsDutch 801Roman SWC SDutch 801Bold SWC SDutch 801Italic SWC SDutch 801Bold Italic SWC SSwiss 742SWC SSwiss 742Bold SWC SSwiss 742Medium Italic SWC S

S: Supported, NS: Not Supported


Rev. B 1-7

Table 1-7. Built-in Fonts (Continued)

Resident FontsApplicable Mode

HP LJ4GL/2

Scalable fontsSwiss 742Bold Italic SWC SSwiss 721Roman SWM SSwiss 721Bold SWM SSwiss 721Oblique SWM SSwiss 721Bold Oblique SWM SDutch 801Roman SWM SDutch 801Bold SWM SDutch 801Italic SWM SDutch 801Bold Italic SWM SSymbol SetSWA SMore WingBatsSWM SCourierSWC SCourierBold SWC SCourierItalic SWC SCourierBold Italic SWC S

S: Supported, NS: Not Supported


1-8 Rev. B

1.3 INTERFACE SPECIFICATIONS

The EPL-5500 is equipped with the following external interfaces:❏ Parallel interface❏ Optional LocalTalk/serial interface❏ Optional Type B interface with Type-B EX box

1.3.1 Parallel InterfaceThe parallel interface has the following two modes:

❏ Compatibility mode (same as parallel interface for EPSON’s current page printer)❏ Reverse mode

1.3.1.1 Parallel Interface Compatibility ModeSystem: STROBE synchronization, 8-bit parallel data transferHandshaking: BUSY and ACKNLG signalsConnector type: P90-25027-1 (Amphenol) receptacleApplicable plug: 57-30360 (Amphenol or equivalent)Transfer speed: Approximately 400,000 bytes/second (max.)Signal timing: See Figure 1-3.Signal description: See Table 1-8.

DATA 1-8

STROBE

BU SY

ACKNLG

VALID VALID

0.5 µ s(minimum)

0.5 µ s(minimum)

0.5 µ s (minimum)

0.5 µ s (maximum)

1 or 10 µ s(typical)

0 s(min.)0.5 or 5 µ s

(minimum)

Figure 1-3. Compatibility Mode Signal Timing


Rev. B 1-9

Table 1-8. Parallel Interface Pin AssignmentsPin No. Signal Name I/O Description

1

STROBE

IN

STROBE is a strobe pulse used to read data from the hostcomputer. The pulse width must be more than 0.5 µsec.Normally it is HIGH, and data is latched at the trailing edge ofthis signal.

2-9

DATA 1-8

IN

DATA 1 to 8 are parallel data bits. When the signal is HIGH, thedata bit is 1, and when it is LOW, the data bit is 0. The mostsignificant bit (MSB) is DATA 8. The signal state must bemaintained for 0.5 µsec. on either side of the STROBE signalactive edge.

10

ACKNLG

OUT

ACKNLG is an acknowledge pulse with an approximate widthof 1 or 10 µsec. This signal goes LOW when the data reception iscompleted, which indicates that the printer can accept new data.Timing with the BUSY signal is specified through SelecType.

11 BUSY OUT The BUSY signal informs the host computer of the printer state.When the signal is HIGH, the printer cannot accept data.

12PE

OUTThe PE signal indicates paper empty for the standard trayselected through SelecType or command, or for the optionalpaper cassette. Paper empty is indicated by HIGH.

13 SLCT OUT Used in reverse mode.

14 AUTO-FEED IN Not used.

15 NC — Not used.

16 GND — Logic ground level.

17 CHASSIS GND — Connected to the printer chassis. The printer chassis GND andthe signal GND are connected to each other.

18 NC — Not connected.

19-30 GND — Ground level for the twisted pair return signal.

31 INIT IN The STROBE signal is ignored when this signal is LOW.

32

ERROR

OUT

This level goes LOW when the printer is:• Out of paper• Paper jam• In the error state• Off line

33 GND — Same as for pins 19 to 30.

34 NC — Not used.

35 +5 — Pulled up to +5 V through 1.0K-ohm resistance.

36 SLCT IN — Used in reverse mode.


1-10 Rev. B

1.3.1.2 Reverse ModeReverse mode for the EPL-5500 supports the IEEE-P1284 nibble mode. This printer can run inreverse mode, in which the printer can inform the computer of its status with EJL and PJLcommands.System: IEEE-P1284 nibble modeConnector type: P90-25027-1 (Amphenol) receptacleApplicable plug: 57-30360 (Amphenol or equivalent)Signal description: See Table 1-9.

Table 1-9. Parallel Interface Pin AssignmentPin No. Signal Name I/O Description

1 STROBE IN HostClk: This signal is a strobe pulse used to read extensionrequest values from the host computer during negotiation.

2-9

DATA 1-8

IN

These signals are data bits of extension request values receivedduring negotiation. This printer supports following values:0000 0100: Request Device ID (sent in nibble mode)0000 0000: Request nibble mode

10 ACKNLG OUT PtrClk: Printer sends clock data.

11 BUSY OUT PtrBusy: Printer sends data bits 3 and 7 during data transfer tohost computer.

12PE

OUT AckDataReq: Printer sends data bits 2 and 6 during datatransfer to host computer.

13 SLCT OUT Xflag: Printer sends data bits 2 and 6 during data transfer tohost computer.

14AUTO-FEED

INHostBusy: This signal informs the printer of the host computer’sstate. When the signal is HIGH, the host computer cannotaccept data.

15 NC — Not used.

16 GND — Logic ground level.

17 CHASSIS GND — Connected to the printer chassis. The printer chassis GND andthe signal GND are connected to each other.

18 NC — Not connected.

19-30 GND — Ground level for the twisted pair return signal.

31 INIT IN nInit: Fixed at HIGH level.

32 ERROR OUT nDataAvail: Printer sending data bits 0 and 4 during datatransfer to host computer.

33 GND — Same as for pins 19 to 30.

34 NC — Not used.

35 +5 — Pulled up to +5 V through 1.0K-ohm resistance.

36 SLCT IN IN 1284Active: If this signal is set to HIGH, this printer is activelyin P1284 (reverse mode).


Rev. B 1-11

Figure 1-4 shows the switch diagram for the parallel interface state.

ForwardD ataTransfer

ForwardIdle

STROBE

ACK and BUSY

Compatibi l i ty Mode

Terminate

Negotiat ion

SLCT IN=HIGHFai ledNegotiat ion

ReverseDataTransfer

Host BusyDataAvailable

Host BusyData NotAvailable

ERR=HIGH

No data sent

ERR=LOW

Sending data

E RR=LOW

Sending data

ERR=HIGHAUTOFEED=LOW

No data sent Request tosend data

ReverseIdle

InterruptHo st

SLCT IN=LOW

ERR=LOW

AUTOFEED=LOW AUTO

FEED=HIGH

Figure 1-4. Parallel Interface State Switch Diagram


1-12 Rev. B

Figure 1-5 shows the negotiation timing chart.

Notes:1. This signal is set to HIGH when no data is being sent.

This signal is set to LOW during sending of data.2. This signal is set to HIGH if the extension request value was 04h.3. HB DA: Host Busy Data is Available

HB DNA: Host Busy Data is Not Available Figure 1-6 shows the data transfer timing chart.Notes:

1. This signal is set to HIGH when no data is being sent.This signal is set to LOW during sending of data.

2. This signal is set to HIGH, if extension request value was 04h.3. HB DA: Host Busy Data is Available

HB DNA: Host Busy Data is Not Available

DATA 00h or 04h

SEL-IN

STROBE

AUTO-FEED

ACKNLG

Peripheral Busy StatusBUSY

Current Peripheral StatusPE Note1

Note 2SLCT

Current Peripheral StatusERROR Note1

Compatibility Negotiation HB DA orHB DNA(Note 3)

Idle orTransfer

Figure 1-5. Negotiation Timing Chart

DATA

SEL-IN

STROBE

AUTO-FEED

ACKNLG


PE

SLCT

ERROR

HB DA Negotiation

HB DA orHB DNA(Note 3)

Idle orTransfer

Bit 3 Bit 7

Bit 2 Bit 6

Bit 1 Bit 5

Bit 0 Bit 4

Peripheral Busy Status

Note 1

Note 1

Note 2

Figure 1-6. Timing Chart for Data Transfer


Rev. B 1-13

Figure 1-7 shows the timing chart for termination.

Notes:

1. The signal is HIGH when HB DNA.The signal is LOW when HB DA.

2. The signal is set to HIGH, if the extension request value was 04h.3. Idle = LOW.Figure 1-8 shows the timing chart for interrupts.

Note: The signal is set to HIGH, if the extension request value was 04h.

DATA

SEL-IN

STROBE

AUTO-FEED

ACKNLG


PE

SLCT

ERROR

HB DNA, Idle,or HB DA

Termination Compatibility

Peripheral Busy Status

Note 1

Note 2

Note 3

Current Peripheral Status

Current Peripheral StatusNote 1

Figure 1-7. Termination Timing Chart

DATA

SEL-IN

STROBE

AUTO-FEED

ACKNLG


PE

SLCT

ERROR

Reverse Idle Interrupt

Note 1

HB DA Transfer

Figure 1-8. Timing Chart for Interrupts


1-14 Rev. B

1.3.2 Serial InterfaceThis printer can use the optional LocalTalk/serial interface module.Type: RS-232C/current loopTransfer system: Full duplexSynchronization: Asynchronous start-stop system

Start-bit: 1 bitStop-bit: 1 or 2 bitsData length: 7 bits or 8 bitsParity: Odd, even, or none

Protocol: X-ON/X-OFF (can be combined with DTR control)DTR control (can be combined with X-ON/X-OFF)

Transfer speed: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, or 57600 bpsError: Overrun error: Processed as missing data and replaced by “*”

Parity error: Replaced by “*”Framing error: Replaced by “*”Breaking character: Ignored

Signal description: See Table 1-10. Table 1-10. Serial Interface Pin Assignments

Pin No. Signal Name I/O Description

1CHASSIS-GND

— Connected to the printer chassis. The printer chassis GND andsignal GND are connected to each other.

2

TXD

OUT

Serial ASCII data output by the printer. It maintains the“MARK” state (LOW level) between transmitted charactercodes. Logic 0 is at HIGH level (SPACE) and logic 1 is at LOWlevel (MARK).

3 RXD IN Serial ASCII data input to the printer. It maintains “MARK”state (LOW level) between received character codes.

5 CTS IN Always ignored.

7 SIGNAL-GND — Ground.

17

TTY-TXD

OUT

Current loop signal: HIGH impedance (SPACE) between pins17 and 24 or X-ON signal sent across pins 17 and 24 indicatesthat the printer is ready to accept data; LOW impedance(MARK) or X-OFF signal being sent indicates that the printer isbusy.

20

DTR

OUT

Signal output by printer. When the DTR signal is HIGH, theprinter can receive the RXD signal. The SelecType settings donot specify DTR control, the signal level is HIGH while printerpower is on. When the SelecType setting is used for DTRcontrol, DTR goes LOW in case of any error conditions. Thedata (RXD) from host computer must be stopped within 128characters after DTR goes LOW.

23 TTY-RXD Return — Current loop signal: Current return for pin 17

24 TTY-TXD Return — Current loop signal: Input data current loop

25 TTY-RXD IN Current loop signal: Current return for pin 25

Note : The DTR state can be selected through printer settings.


Rev. B 1-15

Handshaking

When the vacant area for data in the input buffer drops to 256 bytes, the printer outputs an X-OFFcode or sets the DTR signal level to LOW, indicating that the printer cannot receive more data.Once the vacant area for data in the buffer recovers to 512 bytes, the printer outputs an X-ON codeor sets the DTR flag to HIGH, indicating that the printer is again ready to receive data.

Protocol

There are two types of protocols, as listed below, and each of them can be designated by SelecTypeindependently.❏ DTR/DSR protocolSelecType is used to execute the DTR/DSR control protocol. The DTR signal is set to HIGH whenthe printer is ready to receive data, and to LOW when conditions indicate an error or that thereceiving buffer is full.When the error is cleared and the printer returns to on-line mode, the signal returns to HIGH. WhenSelecType is used to set the DTR control OFF, DTR is always set to HIGH. The printer transmitsTXD only when DSR is at the HIGH level (DSR is always considered HIGH when the SelecTypesetting for DSR is OFF). X-ON/X-OFF transmission is independent of the DSR state.❏ X-ON/X-OFF (DC1/DC3) protocolSelecType is used to execute the X-ON/X-OFF protocol. The X-OFF (DC3) code is output if statusindicates an error, and the printer warns the host to stop data transmission within 256 characters.No further X-OFF codes are sent in response to additional data received from the host after theX-OFF code has been sent once. The X-ON (DC1) code is output after all conditions given in theerror are cleared.When the remaining capacity of the receive buffer reaches 512 characters, X-OFF (DC3) is outputonce. It is sent only once, even if there are multiple errors. The printer goes on line automatically atpower on, and outputs an X-ON code. Transmission of X-ON/X-OFF codes can be defined bySelecType.


1-16 Rev. B

1.3.3 Optional LocalTalk InterfaceThis printer can use the optional LocalTalk/ serial interface module.Type: LocalTalkSignal level: Same as RS-422 signal levelProtocol: X-ON/X-OFF (cannot be combined with DTR control)

DTR control (cannot be combined with X-ON/X-OFF)Transfer speed: 230.4K bpsSignal description: See Table 1-11.

Table 1-11. LocalTalk Interface Pin AssignmentsPin No. Signal Name I/O Description

1 DTR OUT Signal output by the printer. When the DTR signal is HIGH, theprinter can receive the RXD signal.

2 CTS IN The printer transmits the data through TXD while CTS is HIGH.

3

TXD-

OUT

Serial ASCII data output from the printer.HIGH level; when SD+ voltage is higher than the SD- voltage.LOW level; when SD+ voltage is less than the SD- voltage.Logic 0 is SPACE and logic 1 is MARK. The state must bemaintained between transmitted character codes.

4 GND — Ground.

5

RXD-

IN

Serial ASCII data input from computer.HIGH level; when RD+ voltage is higher than RD- voltage.LOW level; when RD+ voltage is less than RD- voltage.Logic 0 is “SPACE” and logic 1 is “MARK” state must bemaintained between transmitted character codes.

6 TXD+ OUT Refer to TXD-.

7 NC — No connect.

8 RXD+ IN Refer to RXD-.


Rev. B 1-17

1.4 OPERATING INSTRUCTIONS

This section describes functions performed through the control panel, such as printing a statussheet, hexadecimal dump, and printer settings functions.

1.4.1 Control PanelThe printer control panel gives you easy control over most common printer operations. The panelconsists of indicator lights and a button.

Indicator lights

❏ Yellow lightON: Communication with the host is possible.Fast flashing: Receiving data or warming up.Slow flashing: Received data is stored in the printer but has not been printed.OFF: Printer is power off.❏ Red lightON: Paper jam or cover open.Fast flashing: Feed jam, paper empty.Slow flashing: One of these errors: SOFT ERROR, PRINT OVERRUN, MEMORY OVERFLOW,

CHECK PAPER SIZE, IMAGE OPTIMUMOFF: No error condition.

LED (Yellow)

LED (Red)

Button

Figure 1-9. Control Panel


1-18 Rev. B

Functions of Pressing the Button

❏ While the Red light flashes slowly:Function of button Clears an error.Operation Hold down the button until the yellow and Red lights both go on

after release. The printer prints a status sheet indicating the errortype.

❏ While the Red light flashes fast:Function of button Prints any of the following page.

- Feed jam or paper empty page- Manual feed page

Operation Load the paper or clear the jam, and then hold down the buttonuntil the yellow and Red lights go on, then release to continueprinting.

❏ While yellow light is flashing slowly (except in EPSONScript mode):Function of button Prints out data in the printer’s memory.Operation Hold down the button until the yellow and red lights go on, then

release the button to continue printing.❏ While the yellow light is on (except in WPS mode):Function of button Prints a status sheet.Operation Hold down the button until the yellow and red lights go on, then

release the button to continue printing. The yellow light flash whilethe status sheet is being printed.

❏ Reset (always effective except during warm up or status sheet printing):Function of button Clears current port.Operation Hold down the button until the yellow and red lights go on, and

when these lights start flashing alternately, release the button.❏ Warm boot (always effective except during warm up or status sheet printing):Function of button Warm boot (same as power on reset, except for engine initialization).Operation Hold down the button until the yellow and red lights start flashing

at the same time, then release the button.


Rev. B 1-19

1.4.2 Printer Settings FunctionsThe printer settings function from the Remote Control Panel (software) lets the user control most ofthe printer’s functions, such as printing test pages, selecting a paper size, and changing the printer’sconfiguration. Table 1-12 shows the printer settings options.

Table 1-12. Printer Settings

Menu Item Available Options

PRINTING COPIES 1 to 999

PAGE SIZE A4, A5, B5, LT, HLT, LGL, GLT, GLG, EXE,F4, MON, C10, DL, C5, IB5, CTM

ORIENTATION PORT, LAND

MANUAL FEED OFF, ON

RITech OFF, LIGHT, MEDIUM, DARK

TONER SAVE OFF, ON

LJ4 FONT SRC RESIDENT, SIMM, DOWNLOAD

FONT NUMBER 0 to (available)

PITCH 0.44 to 99.99 CPI (0.01 steps)

HEIGHT 4.00 to 999.75 PT. (0.25 steps)

SYMSET Roman-8, ECM94-1, 8859-2 ISO, 8859-2 ISO,IBM-US, IBM-DN, PcMultiling, PcE.Europe,PcTk437, WiAnsi, WiE.Europe, WiTurkish,DeskTop, PsText, VeInternati, VeUS,MsPublishin, Math-8, PsMath, VeMath,PiFont, Legal, UK, ANSI ASCII, Swedis2,Italian, Spanish, German, Norweg1,French2, Windows

FORM 5 to 128 lines

SRC SYMSET* 0 to 3199

DEST SYMSET* 0 to 3199

PS* ERR SHEET OFF, ON

MicroGray OFF, ON

PROTECT LEVEL 1 to 5

ESCP2* Font Courier, Roman, Sans serif, Roman-T,Sans-H, Script

Pitch 10 CPI, 12 CPI, 15 CPI, Prop

Condensed OFF, ON

T-Margin 0.40 to 1.50 Inch (0.05 steps)

Text 1 to (available) lines

CG Table Pc USA, Italic, PcMultilin, PcPortuguese,PcCanFrenc, PcNordic, PcTurk2,Pc.E.Europe, BpBRASCII, BpAbicomp

Country USA, France, Germany, UK, Denmak,Sweden, Italy, Spain1, Japan, Norway,Denmark2, Spain2, LatinAmeric, Korea,Legal

* With optionTable 1-12. Printer Settings (Continued)



1-20 Rev. B

ESCP2 * (Continued) Auto CR ON, OFF

Auto LF OFF, ON

Bit Image Dark, Light, BarCode

Zero Char 0, φFX* Font Courier, Prestige, Roman, Sans serif, Script

Pitch 10 CPI, 12 CPI, 15 CPI, Prop

Condensed OFF, ON



CG Table Pc USA, Italic, PcMultilin, PcPortuguese,PcCanFrenc, PcNordic, PcTurk2,Pc.E.Europe, BpBRASCII, BpAbicomp

Country USA, France, Germany, UK, Denmak,Sweden, Italy, Spain1, Japan, Norway,Denmark2, Spain2, LatinAmerica

Auto CR ON, OFF

Auto LF OFF, ON


Zero Char 0, φI239X* Font Courier, Prestige, Gothic, Orator Script,

Presentor

Pitch 10 CPI, 12 CPI, 15 CPI, 17 CPI, 20 CPI, 24CPI, Prop

Code Page 437, 850, 860, 863, 865



Auto CR OFF, ON

Auto LF OFF, ON

Alt.Graphics OFF, ON


Zero Char 0, φ* With option


Rev. B 1-21

Table 1-12. Printer Settings (Continued)


JOB PAGE PROTECT AUTO, ON

RESOLUTION 600, 300

IMAGE OPTIMUM AUTO, OFF, ON

TIMEOUT 5 to 300

EMULATION PARALLEL LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*

SERIAL* LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*

L/T* LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*

AUX* LJ4, ESCP2*, FX*, I239X*, PS*, GL2, AUTO*

CONFIG AUTO CONT OFF, ON

STANDBY ENABLE, DISABLE

DENSITY 3, 4, 5, 1, 2

INTERFACE AUTO, PARALLEL, SERIAL*, L/T*, AUX*

TOP OFFSET 0 to 99

LEFT OFFSET 0 to 99

PAGE COUNT 0 to 262143

PARALLEL SPEED FAST, LOW

BI-D ON, OFF

SERIAL WORD LENGTH 8, 7

BAUD RATE 9600, 19200, 38400, 57600, 300, 600, 1200,2400, 4800

PARITY NONE, EVEN, ODD

STOP BIT 1, 2

DTR ON, OFF

XON/XOFF ON, OFF

TEST STATUS SHEET —

PS STATUS SHEET* —

PS FONT SAMPLE* —

PS FACT SHEET* —

EXT PRINTER INFO —

* With option


1-22 Rev. B

1.4.3 Service ModeThis printer has the following four service modes:❏ Hexadecimal dump mode❏ EEPROM format mode❏ Factory reset mode❏ Default setting modeEach service mode can be activatted selectively, by turning the printer on while hold down thebutton and release it at the corresponding timing shown in table below.

Table 1-13. Service Mode Select Timing

Order Pattern LED(Yellow)

LED(Red) Mode

1 Pattern 0-0 ON ON NA

2 Pattern 0-1 OFF OFF NA

3 Pattern 1 ON OFF Hexadecimal dump mode

4 Pattern 2 OFF ON EEPROM Initialize mode

5 Pattern 3 ON OFF Factory reset mode

6 Pattern 4 OFF OFF Default setting mode *1

*1: Can be performed by the user.

1.4.3.1 Hexadecimal Dump ModeHexadecimal dump mode is a useful tool in troubleshooting data control problems. To enterhexadecimal dump mode, release the button at the mode select timing "Pattern-1". To quit thehexadecimal dump mode, turn off the printer or perform the warm-boot operation.

1.4.3.2 EEPROM Initialize ModeEEPROM initialize operations are required only when the main board or EEPROM is replaced andthese operations are specified in the accompanying documentation.This mode resets all user settings to the factory default settings and clears the printer statusinformation (page counter and jam counter). To perform EEPROM initialize mode, release thebutton at the mode select timing "Pattern-2" and press the bottun again within 2 seconds from therelease. The LED lights flashes alternately during the initialization. If the button is not pressedwithin 2 seconds after release, the printer enters nomal state without initialize operation.

1.4.3.3 Factory Reset ModeThe factory reset mode resets the printer settings to the factory default settings (the page counterand jam counter are not cleared). To enter factory reset mode, release the button at the mode selecttiming "Pattern-3" and press the button again within 2 seconds after release. The LED lights flashesalternately during the reset operation. If the button is not pressed within 2 seconds after release, theprinter enters the nomal state without reset operation.


Rev. B 1-23

1.4.3.4 Default Settings

The default settings function is used to enter printer settings. The procedure for entering defaultsettings is:1. To enter the default settings mode, turn on the printer while holding down the button until

yellow and red lights turn off and on and off. 2. Press the button the number of times for the 1st code, while the yellow light is flashing.3. Press the button the number of times for the 2nd code, while the red light is flashing.4. Press the button the number of times for the 3rd code, while all lights flash.5. If you need end the default settings mode, return step 2 and input the "111" code.

If you need set the other settings, return to step 2.Thable 1-14 shows default settings codes.

Table 1-14. Default Settings Codes


Default SettingsCodes

1stCode

2ndCode

3rdCode

End of default settings mode 1 1 1

PARALLEL SPEED FAST 1 1 2

SLOW 1 1 3

Bi-D ON 1 1 4

OFF 1 1 5

SERIAL* WORD LENGTH 8 1 2 1

7 1 2 2

BAUD RATE 9600 1 2 3

19200 1 2 4

38400 1 2 5

27600 1 3 1

300 1 3 2

600 1 3 3

1200 1 3 4

2400 1 3 5

4800 1 4 1

PARITY NONE 1 4 2

EVEN 1 4 3

ODD 1 4 4

STOP BIT 1 1 4 5

2 1 5 1

DTR ON 1 5 2

OFF 1 5 3

XON/XOFF ON 1 5 4

OFF 1 5 5

* With option

Table 1-14. Default Settings Code (Continued)


Default SettingsCodes

1stCode

2ndCode

3rdCode


1-24 Rev. B

EMULATION PARALLEL LJ4 2 1 1

ESCP2* 2 1 2

FX* 2 1 3

I239X* 2 1 4

PS* 2 1 5

GL2 2 2 1

AUTO* 2 2 2

SERIAL* LJ4 2 3 2

LT*

AUX*

SERIAL* ESC/P2* 2 3 3

LT*

AUX*

SERIAL* FX* 2 3 4

LT*

AUX*

SERIAL* I239X* 2 3 5

LT*

AUX*

SERIAL* PS* 2 4 1

LT*

AUX*

SERIAL* GL/2 2 4 2

LT*

AUX*

SERIAL* AUTO* 2 4 3

LT*

AUX*

* With option


Rev. B 1-25

Table 1-14. Default Settings Code (Continued)


Deafult SettingsCodes

1stCode

2ndCode

3rdCode

ESC/P2* / FX* CG Table PcUSA 2 5 3

Italic 2 5 4

PcMultilin 2 5 5

PcPortugue 3 1 1

PcCanFrenc 3 1 2

PcNordic 3 1 3

PcTurkish 3 1 4

PcE.Europe 3 1 5

BpBRASCII 3 2 1

BpAbicomp 3 2 2

STATUS SHEET LANGUAGE ENGLISH 3 2 3

FRENCH 3 2 4

GERMAN 3 2 5

ITALIAN 3 3 1

SPANISH 3 3 2

PRINTING PAGE SIZE A4 3 5 1

LT 3 5 2

LGL 3 5 3

CTM 3 5 4

ORIENTATION PORT 3 5 5

LAND 4 1 1

MANUAL FEED OFF 4 1 2

ON 4 1 3

TONER SAVER OFF 4 1 4

ON 4 1 5

JOB RESOLUTION 600 4 2 1

300 4 2 2

CONFIG AUTO CONT OFF 4 2 3

ON 4 2 4

STANDBY ENABLE 4 2 5

DISABLE 4 3 1

INTERFACE AUTO 4 3 2

PARALLEL 4 3 3

SERIAL 4 3 4

LT 4 3 5

AUX 4 4 1

* With option


1-26 Rev. B

1.4.4 Display of MessagesThis printer indicates three types of messages with the LED lights or status sheet: status messages,error messages, and the service call error message.

1.4.4.1 Status MessagesThe LED lights normally indicate the printer’s status. (Refer to Section 1.4.1.)

1.4.4.2 Error MessagesIf any of the following errors occurs, it will be printed on the status sheet (Refer to Section 1.4.2.).Clear the error immediately using the measures shown in the following table.

Table 1-15. Error MessagesMessage Status Measures

SOFT ERROR Printer detected a CPU error or softerror. (Refer to Chapter 5.)

—

PAPER JAM A paper jam has occurred. Open the cover and remove thejammed paper. Then close the cover.

PRINTER OPEN Cover is open. Close the cover.MANUAL FEED Select manual feed and begin

printing data.Insert paper and press button.

PAPER SET No paper is left in either thestandard tray or the optionalcassette.

Load paper in paper tray or optionalcassette and press button.

PRINT OVERRUN Engine speed faster than print imageprocessing.

Press the button.

MEM OVERFLOW Data has filled the buffer. Confirm and press the button. Andadd optional SIMM.

CHECK PAPER SIZE The paper size in the tray is differentfrom the paper size chosen.

Change the paper and print again.

IMAGE OPTIMUM The printer uses a lower printquality.

Erase downloaded data or add aSIMM.

1.4.4.3 Service Call Error MessageThe LED lights flash randomly, when the printer detects a service call error. (Refer to Chapter 5.).


Rev. B 1-27

1.4.5 Printer SharingThis section describes printer sharing. This printer has two methods of printer sharing, port fixedmode and auto sense mode. These modes are selected by “INTERFACE” in the printer settingsmenu.

1.4.5.1 Port Fixed ModeWhen the printer is in port fixed mode, only one interface port is active. Data from other ports isignored.

1.4.5.2 Auto Sense Mode

It is possible to allocate each mode to parallel, serial, L/T, and AUX. The entire memory will beallocated to the channels that are used. The interface that receives the data first will print first.

HP mode

ESC/P2 mode

FX mode

GL2 mode

EPSONScr iptm od e

Parallel

Mode Ass ignment

User 1

Memory

HP mode

ESC/P2 mode

FX mode

GL2 modeEPSONScr iptm od e

L/T orSer ial orA U X

Mode Ass ignment

User 2

Input buffer

Switched byprinter sett ings

Figure 1-10. Port Fixed Mode

HP m ode

ESC/P2 mode

FX mode


Parallel

Mode Ass ignment

User 1

MemoryHP m od e

ESC/P2 mode

FX mode


Serial orL/T orA U X

Mode Ass ignment

User 2

Input buffer

Input buffer

Auto Sense

Figure 1-11. Auto Sense Mode


1-28 Rev. B

1.4.6 Emulation Mode Switch FunctionThis section describes the emulation mode switch function.

1.4.6.1 Emulation Switch by SPLThe two types of emulation switch function described below are available on this printer. Togetherthey are referred to as SPL (Shared Printer Language).

EJL: EPSON Job Language

This is EPSON’s original language system. It is used to skip among various destinations, as shownin Figure 1-12.

PJL: Printer Job Language

This is HP’s original language, which is available with LaserJet 4 printer. It is used to skip amongvarious destinations, as shown in Figure 1-12. The precise specifications for this language are basedon HP LaserJet 4.The figure below shows three types of mode switching.Neither EJL nor PJL switches the mode directly. They first exit the current mode and return to EJLor PJL. Then they enter another mode.

1.4.6.2 Intelligent Emulation Switch

Intelligent Emulation Switch (IES) automatically switches emulation mode, depending on the datasent from the host computer through one of the interface channels. It is able to switch betweenEPSONScript and other modes as shown in the figure below.

1.4.7 Bi Resolution Improvement Technology

The EPL-5500 printer has BiRITech (Bi Resolution Improvement Technology), which is designed toimprove print quality at 600 dpi and 300 dpi. By this method, the dot map data extracted from theimage data is reassembled to improve print data.

LJ4

EPSONScript

EPSON GL/2

EJL

PJL

FX

ESC/P 2

Figure 1-12. Emulation Switch by SPL

EPSONScript

LJ4

FX EPSON GL/2

ESC/P 2

Figure 1-13. Intelligent Emulation Switch


Rev. B 1-29

The main improvement of this technique is in eliminating “jaggies” in diagonal lines. It is mosteffective when the dot map data fits the development characteristics of the printer mechanism well.It is therefore necessary to set appropriate values in printer settings.

Note: BiRITech is not as effective for printing a mesh pattern or gray scale. In such cases,BiRITech must be set to OFF. (The default setting is MEDIUM.) Since the BiRITech effectdepends on the toner condition, adjusted it when the imaging cartridge is replaced or afterthe imaging cartridge is used for a long time.

The following settings are available in printer settings for RITech: DARK, MEDIUM, LIGHT, OFF.The status sheet has the following RITech test image. When the toner density of area A is almost thesame as that of area B (as shown in the figure below), the RITech setting is at its optimum setting. Inother words, the optimum setting is achieved when it is difficult to distinguish the shape of area Afrom that of B.

R

1 2 600

1

2

3

4

600

1 inch

1 inch

3 4

5

6

7

8

(When 600 DPI printing)

Figure 1-14. Effect of BiRITech

A

B

Figure 1-15. RITech Adjustment


1-30 Rev. B

1.4.8 Toner Save ModeThe Toner Save Mode uses about 50% less toner than normal. The printer saves toner by substiutinga gray shade for the black inside of characters. the outlines of the characters are still printed in fullback.

1.4.9 Optional Memory

If you have difficulty printing complex, graphics-intensive pages or if you regularly usedownloaded fonts, you may need to install one of the optional SIMM sets on this printer’s controllerboard. The printer’s controller board comes with 1MB of RAM installed. By installing additional SIMMs, you can increase the printer’s memory to a total of 32MB, includingthe resident memory.EPSON supplies several types of memory option (SIMMs). Other SIMMs can be purchased fromother vendors. Be sure the SIMM meets the requirements listed below.❏ 72-pin type❏ Capacity is one of the following: 1, 2, 4, 8, 16, 32MB❏ Access speed is less than 70 ns.❏ Within the following dimensional size

36 mm (height) × 108 mm (width) × 10 mm (depth)

Upper Edge

Left Edge

Figure 1-16. Toner save Mode


Rev. B 1-31

1.5 MAIN COMPONENTS

To simplify maintenance and repair, the main components of the EPL-5500 have been designed foreasy removal and replacement. The main components are:

❏ C169 MAIN-B Board Main board❏ PWB-E Board Power supply circuit board❏ PWB-F Board High-voltage supply circuit board❏ Optical Unit Printhead unit❏ Fusing Unit❏ Photoconductor unit❏ Developer cartridge❏ Housing

Opt ical Unit

C169 MAIN-B Board

PWB-E Board

PWB-F Board

Fusing Unit

Figure 1-17. Component Layout


1-32 Rev. B

1.5.1 C169 MAIN-B BoardThe C169 MAIN-B board is a video controller and engine controller board. The primary functions ofthis board are receiving print data from the host, generating the print image (video), and sendingthe print image to the engine controller via the video interface. A 32-bit 22 MHz RISC MB86933HSPARKlite CPU in location IC1 is used, and the following memory chips and custom ICs areassigned to the 4GB memory space.❏ Memory chips

Code and font ROMs: four 4M-bit EPROMs (IC13, 14, 15, 16) or two 8M-bit mask ROMs (IC21, 22)Optional NLSP font ROM: 4M-bit or 8M-bit ROM (IC12). Not available in U.S. version.4M-bit DRAMs (IC17, 18)EEPROM (IC11)

❏ Custom ICsASIC E05A91 (IC2)ASIC E05A92 (IC3)ASIC E05A93 (IC4)

❏ OthersReset IC M51953BFP (IC6)

The engine controller consists of an M3807x 8-bit CPU, including a MASK ROM. It controls laserscanning (the polygon mirror drive motor), image synchronization, laser beam pulse width, andpower.There are two types of C169 MAIN-B boards used as after service parts. The following table showsdifferences between them.

Table 1-16. Differences in Components for the C169 MAIN-B BoardUS version Other Version

IC12 None IC socketJumper J20 Open Short

MB86933H(IC1)

E05A91(IC2)

( IC12)

( IC16)

( IC15)( IC14)

( IC13)

M 3807(IC201)

E05A93(IC4)

E05A92(IC3)

Figure 1-18. C169 MAIN-B Board


Rev. B 1-33

1.5.2 PWB-E BoardThe PWB-E is the power supply board, which consists of a switching regulator circuit. It convertsthe AC line voltage into +24 V and +5 VDC voltages. There are two types of power supply board,the 100/120 V type and 220/240 V type. The difference between the two circuits is only in the inputsection.

CAUTION

Do not touch VR1 on PWB-E board. This volume is for factory setting only.

1.5.3 PWB-F BoardThe PWB-F is the high-voltage supply circuit board. It converts the development bias, OPC drumcharge bias, and image transfer bias.

CAUTION

Do not touch VR3 on the PWB-F board. These volumes are for factory setting only.

F1

VR1

Figure 1-19. PWB-E Board

VR3

Figure 1-20. PWB-F Board


1-34 Rev. B

1.5.4 Optical UnitThe optical unit consists of the laser diode (semi-conductor laser), the mirror motor (scanner motor)which drives the polygon mirror for laser scanning, and several mirrors and lenses. The laser beamgenerated by the laser diode is conducted to the OPC drum surface by way of the polygon mirror,as well as several mirrors and lenses, to create a latent electro-photographic image on the drum.

1.5.5 Fusing UnitThe fusing unit fixes the toner to the paper using heat and pressure. This unit has a heater lamp,thermistor, and thermal fuse. There are two types of fusing units, the 120 V type and the 220/240 Vtype. The only difference between them is the heater lamp.

Figure 1-21. Optical Unit

Figure 1-22. Fusing Unit


Rev. B 1-35

1.5.6 Photoconductor UnitCore mechanisms of the printing process, such as charging and imaging, are integrated into thisunit.

1.5.7 Developing CartridgeCore mechanisms of the printing process, such as developing, are integrated into this cartridge.

1.5.8 Lower Paper Casste UnitThis optional paper cassete allows you to feed up an addtional 250 sheets of A4 or B5 paper intothis printer.

Note: While you use A4/B5 paper, jumper JP1 on the circuit board of lower paper casstte unitshould be set to 2-3. While you use letter/ executive paper, jumper JP1 should be set to1-2. Jumper JP2 is fixed to 1-2.

Figure 1-23. Photoconductor Unit

Figure 1-24. Developing Cartridge


1-36 Rev. B

Chapter 2 Operating Principles

Table of Contents

2.1 ENGINE OPERATION 2-12.1.1 Print Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.1.1.1 Paper Feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32.1.1.2 Drum Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42.1.1.3 Laser Exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52.1.1.4 Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52.1.1.5 Image Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62.1.1.6 Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.1.2 Engine Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72.1.2.1 Main Motor Functions and Control . . . . . . . . . . . . . . . . . . . . . . . . 2-82.1.2.2 Paper Take-Up Sensor and Paper Exit Sensor. . . . . . . . . . . . . . . 2-92.1.2.3 Fuser Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-102.1.2.4 Scanner Mirror Motor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-112.1.2.5 Laser Diode Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-122.1.2.6 Bias Voltages and Laser Drive Timing . . . . . . . . . . . . . . . . . . . . 2-132.1.2.7 Fan Motor Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-152.1.2.8 Power Supply Circuit Function and Safety Protection. . . . . . . . . 2-15

2.2 VIDEO CONTROLLER OPERATION 2-162.2.1 C169 MAIN-B Board Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

2.2.1.1 Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-192.2.1.2 Bus Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-192.2.1.3 Interrupt Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-202.2.1.4 DRAM Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-202.2.1.5 Parallel Interface Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-212.2.1.6 Video Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

List of Figures

Figure 2-1. Main Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Figure 2-2. Print Process Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2Figure 2-3. Paper Feeding from the Paper Feed Tray . . . . . . . . . . . . . . . . . . . . 2-3Figure 2-4. Paper Feeding from the Lower Paper Cassette . . . . . . . . . . . . . . . . 2-4Figure 2-5. Drum Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4Figure 2-6. Laser Exposure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5Figure 2-7. Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5Figure 2-8. Image Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6Figure 2-9. Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6Figure 2-10. Engine Controller Connecting Diagram . . . . . . . . . . . . . . . . . . . . . 2-7Figure 2-11. Gear and Roller Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8Figure 2-12. Main Motor Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9Figure 2-13. Paper Take-Up Sensor and Paper Exit Sensor On/Off Timing . . . 2-9Figure 2-14. Fuser Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10Figure 2-15. Temperature for Fuser Control Procedure . . . . . . . . . . . . . . . . . . 2-10Figure 2-16. Scanner Motor Control Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11Figure 2-17. Laser Diode Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12Figure 2-18. LDATA Generation Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12Figure 2-19. Laser Emission Power Adjustment Timing . . . . . . . . . . . . . . . . . . 2-12

Figure 2-20. High-Voltage Supply Block Diagram . . . . . . . . . . . . . . . . . . . . . . 2-13Figure 2-21. Print Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14Figure 2-22. Print Sequence (Start) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14Figure 2-23. Print Sequence (End). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-14Figure 2-24. Power Supply Circuit Block Diagram. . . . . . . . . . . . . . . . . . . . . . 2-15Figure 2-25. Video Controller Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16Figure 2-26. C169 MAIN-B Board Block Diagram . . . . . . . . . . . . . . . . . . . . . . 2-16Figure 2-27. Data Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18Figure 2-28. Reset Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19Figure 2-29. Bus Control Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19Figure 2-30. DRAM Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20Figure 2-31. Parallel Interface Circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

List of Tables

Table 2-1. Functions of C169 MAIN-B Board Main Elements . . . . . . . . . . . . . 2-17

2.1 ENGINE OPERATION

This section describes the functions and operating principles of the EPL-5500 engine. Figure 2-1shows the locations and names of the main engine components.

1. Fan Motor (M3) 11. Paper Feeding Tray2. Lower Fusing Roller 12. Paper Lift-up Plate3. Paper Exit Sensor (PC3) 13. Paper Empty Sensor (PI1)4. Upper Fusing Roller 14. Paper Take-up Roller5. Heater Lamp (H1) 15. Paper Transport Roller6. Paper Exit Roller 16. Paper Take-up Sensor (PC1)7. Print Tray 17. Pre-image Transfer Roller8. Optical Unit 18. Electrode Comb9. Toner Cartridge 19. Drum Cartridge10. Manual Feed Guide

Optional Second PaperFeeding Unit

1

2

3

4 56

7

8

9

10

11

12

13141516

17

18

19

Figure 2-1. Main Components

EPL-5500 Service Manual Operating Principles

Rev. B 2-1

2.1.1 Print Process

This section describes the print process from paper feeding to paper exit. Figure 2-2 shows adiagram of the print process.

Optical UnitPrint Exit

Fusing

Drum Cartridge

DrumCharge

ImageTransfer

Exposure

TonerHopper

Develop-ment

Toner Cartridge

Paper FeedingTray

Second PaperFeeding Unit(optional)

Multi Feeding(150 sheets)

Manual Feed(1 sheet)

Multi Feeding(250 sheets)

Figure 2-2. Print Process Diagram

Operating Principles EPL-5500 Service Manual

2-2 Rev. B

2.1.1.1 Paper Feeding

Paper can be fed into the printer from the paper feed tray (150 sheets) or from the manual feed slot(1 sheet at a time). Installing an optional second paper feed unit (lower cassette, 250 sheets) addsanother feeding method. Paper fed by the paper take-up roller is transported to the transport roller,pre-image transfer roller, and then exit roller. After this, the paper is fed out onto the print tray. Thestarting position of an image is decided by the paper take-up sensor (PC1). A photo sensor is usedas the paper take-up sensor (PC1) and the paper exit sensor (PC3).

Paper Feeding Tray (Standard Tray)

When the paper take-up solenoid is energized, the main motor (M1) drive is transmitted to thepaper take-up roller via the paper take-up clutch (a one-way clutch) to rotate the paper take-uproller one revolution. At the same time, the depression cam rotates and releases the paper lift-upplate to feed the top (first) paper. The fixed separating pad is used for the paper separation system.It prevents the second or later sheets from being fed together with the top paper.

Upper Fusing Roller Paper Exit Roller

LowerFusingRoller

PC Drum

Pre-Image TransferRoller

Paper Lift-Up Plate

Fixed SeparatingPad

Transport Roller

Paper Take-Up Sensor (PC1)

Paper Exit Sensor(PC3)

Paper Take-UpRoller

DepressionCam

Paper Take-Up Clutch

Paper Take-UpSolenoid (SL1)

When SL1 is de-energized

When SL1 is energized

Paper Lift-Up Plate Paper

Figure 2-3. Paper Feeding from the Paper Feed Tray


Rev. B 2-3

Second Paper Feed Unit (Optional Lower Cassette)

This unit contains no drive motor, so the main motor (M1) drive is transmitted to the paper take-upand transport sections in the unit via the drive transmission gear. Although the feeding method isthe same as for the paper feed tray in the printer, this unit uses a corner separation system as itspaper separating function. The paper take-up solenoid in the lower cassette is controlled by theprinter via a circuit board in the optional unit.

When the paper regulation plate is set to the inside position, switch S1 on the circuit board isautomatically turned on, causing the printer to recognize that B5-size paper will be fed. On the otherhand, when the paper regulation plate is set to the outside position, S1 remains off, causing theprinter to recognize that A4-size paper will be fed.

2.1.1.2 Drum Charge

The PC drum is charged with static electricity before laser exposure. The rotating charge brush andpre-film are used as the charging method. Less ozone is generated by the corona charge of therotating charge brush and the pre-film, and the PC drum can be charged with low voltage becausethe charge is dirctly applied to the PC drum. The rotating charge brush is rotated by the drive of theM1 main motor via its gear.

PWB-A

Paper Empty Sensor (P|1)

Paper RegulationPlate

Paper Take-Up Roller

Paper Take-Up Clutch

Drive TransmissionGear

Paper Lift-Up Plate

Transport Roller

Corner SeparationPlate

Paper Take-UpSolenoid

Figure 2-4. Paper Feeding from the Lower Paper Cassette

Drum Cartridge

Rotating ChargeBrush

PC DrumProtectingShutter

PC Drum

Charged Surface:(approx. -800 V)

PC DrumProtectingShutter

Drum Chargingand Pre-fi lm Bias

PWB-FC169 MAIN-B

A

B Pre-film

A: Drum Charging BiasB: Drum Ground

IC201

Figure 2-5. Drum Charge


2-4 Rev. B

2.1.1.3 Laser Exposure

The laser beam, emitted from the optical unit, makes an invisible static image. The SOS (start ofscan) sensor, installed on the laser diode control board (PWB-D), unifies the laser emission timingfor each scan line.

2.1.1.4 Development

Toner is applied to the invisible static image on the PC drum and a toner image is created on thesurface. When the PC drum starts to rotate (when the main motor is activated), the PC drumsurface remains 0 V at the position between the rotating charge brush and sleeve roller. At thistime, a specified positive voltage is applied to the sleeve roller to prevent toner from being attractedback onto the PC drum (reverse bias control).

1. Toner hopper: Contains toner.2. Toner agitating screw: Stirs the toner in the hopper and sends the toner to the toner transport

roller.3. Toner transport roller: Transports the toner to the sleeve roller.4. Doctor blade: Spreads a thin, even coat of toner over the resin sleeve. The toner is negatively

charged by passing between this blade and resin sleeve.5. Sleeve roller: Rotates the resin sleeve.6. Resin sleeve: Carries the toner to the PC drum surface for development.7. Bias seal: Collects the toner remaining on the resin sleeve.8. PC drum: Is exposed to the laser to create an invisible image and rotates to carry the developed

image to the paper surface.

Charged Surface

Laser-Exposed Surface:(Approx. -50 V)

PWB-D

SOS Sensor

Reflector Mirror

Laser Diode

M2

CN210

CN205

C169 MAIN-B

IC201

1

5

1

7

Figure 2-6. Laser Exposure

2

4

3

Vs terminal

VB terminalVBL terminal

VB (Developing Bias)

VBL (Toner Blade Bias)

Vs (Lower Seal Bias)

PWB-F

CN1F

CN204

C169 MAIN-B

IC201

1

8

1

8

Figure 2-7. Development


Rev. B 2-5

2.1.1.5 Image Transfer

The electrode comb is an image transfer system that transfers the toner image on the PC drum ontothe paper.

2.1.1.6 Fusing

The toner image transferred onto the paper is fixed securely using a heat roller system as the fusingsystem. The upper fusing roller, which is heated by the heater lamp, fuses the toner image, which issecurely fixed by the pressure between the upper and lower fusing rollers. Thermistor TH1 detectsand controls the temperature of the upper fusing roller. Thermal fuse TF1 blows when thetemperature exceeds 200° C, shutting down power to the heater lamp.

Image Transfer Unit

Housing

Pre-Image Transfer Roller

Housing

Electrode Comb

Electrode Comb

Housing

Pre-Image TransferRoller

Housing Ground

Image Transfer Bias

PWB-F

CN1F

PWB-S

C169 MAIN-B

IC201

CN2041

8

1

8

1

8

1

8

Figure 2-8. Image Transfer

Lower Fusing Roller

Thermal Fuse

Thermistor

Upper FusingRoller

Heater Lamp

Paper

Figure 2-9. Fusing


2-6 Rev. B

2.1.2 Engine Control

This section describes engine control, the power supply board, and the high-voltage supply board.The engine is controlled by the main board (C169 MAIN-B Board). Figure 2-10 shows the enginecontroller connecting diagram.

C169 MAIN-B Board

MainMotor(M1)

PolygonMotor(M2)

FanMotor(M2)

ExitSensor(PC3)

PaperTake-upSensor(PC1)

PaperTake-upSolenoid(SL1)

FusingRollerThermistor(TH1)

PWB-SPWB-FHighVoltageUnit

Image TransferHousing

Image TransferCharger

PWB-APaperTake-upSolenoid(SL2)

2nd Paper FeedingUnit (Option)

PWB-DLaserDiodeDrive

PWB-EPowerUnit

Heater Lamp

Interlock Switch

Figure 2-10. Engine Controller Connecting Diagram


Rev. B 2-7

2.1.2.1 Main Motor Functions and Control

The M1 main motor transmits the drive to the printer rollers and the optional second paper feed unit(lower cassette) via each gear as shown below.

Toner Cartridge

Sleeve Roller A

Paper Exit Roller

Upper Fusing RollerLower FusingRoller

PC Drum

Pre-image TransferRoller

Main Motor (M1)

Optional Second Paper Feeding Unit

Paper Take-Up Roller

Paper Transport Roller

A

Fig.2-11. Gear and Roller Positions


2-8 Rev. B

Figure 2-12 shows the main motor drive circuit. The M1 main motor is a four-phase stepping motorcontrolled by the CPU (IC201) on the main board (C169 MAIN-B). This board has a stepping motordriver IC that drives the M1 main motor with a constant current.

2.1.2.2 Paper Take-Up Sensor and Paper Exit Sensor

The paper take-up sensor has three functions:1. To detect the top edge of paper. The engine starts printing when the detection signal

is received.2. To detect paper size. The printer detects the time it takes for paper to pass the paper

take-up sensor during paper feeding. If this time is long, longer paper is feeding; if the time is short, shorter paper is feeding.

3. To detect paper jams and feed jams.

If the paper take-up sensor does not turn on for paper feeding, the printer detects a feed jam or nopaper. A feed jam is a paper jam that occurs in the feed process.

If any of the following conditions is detected, the printer detects a paper jam. A paper jam is a jamthat occurs in the printing process area.

• The paper take-up sensor (PC1) or the paper exit sensor (PC3) is on at power on or when theupper case is closed.

• The paper take-up sensor (PC1) or the paper exit sensor (PC3) is not turned on/off within thespecified time. (Refer to the following timing chart.)

A

B

CN206

4321

Main Motor M1

Main BoardC169 MAIN-B

B

A

Figure 2-12. Main Motor Drive Circuit

2.0 11.0

Take Up Solenoid ON

3.5-4.5 3.4-4.7

[seconds]

PC1(CN203-3)

PC3(CN208-3)

Figure 2-13. Paper Take-Up Sensor and Paper Exit SensorOn/Off Timing


Rev. B 2-9

2.1.2.3 Fuser Control

The heater lamp, powered by AC voltage, heats the fuser. When the power supply board receivesa FUSER signal from the main board (C169 MAIN-B), the power supply board (PWB-E) suppliesthe AC voltage to the heater lamp. This AC voltage is cut by an interlock switch when the case isopen.

Thermistor TH1 detects the surface temperature of the upper fusing roller and inputs that analogvoltage to the 77-pin chip, IC201. Based on this temperature data, the heater lamp on/off signal (theFUSER signal) is output from the 54-pin chip, IC201, causing heater lamp H1 to turn on or off tocontrol the fusing temperature. When the heater lamp is not turned off even if the thermistor detectsa high temperature malfunction (which occurs if the surface temperature of the upper fusing rollerexceeds 200º C), the signal from the 75-pin chip, IC201, changes from H to L to turn off the heaterlamp forcibly.

The following figure shows the fuser temperature control procedure.

1. Warm up: After printer initialization, printer warm up starts, and the heater lamp turns on until the upper fusing roller’s temperature reaches approximately 172º C.

2. Standby: In standby mode, the upper fusing roller’s temperature is controlled to maintain 156º C. When this condition continues for 3 minutes, the printer goes into standby mode at low temperature.

3. Print cycle: When the printer receives the printing command from the controller, the upper fusing roller is controlled to maintain 172º C.

4. Standby at low temperature: The upper fusing roller is controlled to maintain 112º C.

C169 MAIN-B

IC201

77

54

75

Analog Voltage Detected by theThermistor (TH1)

5 VDC

L

H

IC202B56

4

L

H

H H

23

1IC202A

4 3

L

L H1:ONH H1:OFF

12

1

5

1

5

TH1

Thermistor

PWB-E 123

H1

TF1

Heater Lamp

Thermal Fuse

Heater LampON/OFF Signal

CN202

CN207

CN1E

CN3E

Figure 2-14. Fuser Control Circuit

Temperature (Degrees C)

172

156

112

Power On

Warm up Standby Standby with LowTemperature

Time

When a print is made immediately after warm up

Figure 2-15. Temperature for Fuser Control Procedure


2-10 Rev. B


Rev. B 2-11

If any of the following conditions are detected, the printer indicates a fuser error:

1. If the thermistor detects the temperature has not risen by 20º C for 50 msec. within 12 to 30 sec. after warm up. (This error applies only when the thermistor detects a temperature of 90º C or less.)

2. If the thermistor detects that the temperature has not reached 172º C within 60 sec. after warmup.3. Except in pause mode (see the note below), if the thermistor detects that the temperature in the

idle state has fallen to 80º C or lower for 50 msec., or the temperature during printing has fallen to 133º C or lower.

4. The thermistor detects that the temperature has exceeded 193º C for 50 msec. duringtemperature

control.

Note: Pause Mode: In this mode, the control temperature is decreased to save power in the idlestate, the heater lamp is turned OFF.

Thermo fuse TF1 cuts power if the temperature of the fusing section rises to an abnormally highlevel (over 200° C, 392° F).

2.1.2.4 Scanner Motor Control

Figure 2-16 is the scanner motor (M2) control circuit. The scanner motor is driven while it receivesthe POLYGON CTL signal. Motor rotation speed is 8622 rpm

If the any of following conditions are detected, the printer indicates a scanner motor error:

1. The SSCAN signal has not been given once within 1 sec. after the scanner motor is energized.2. The number of scanner motor rotations has not stabilized within ± 0.5 rpm by 4.2 sec. after the

motor is energized.3. The number of scanner motor rotations has exceeded ± 3% for more than 0.5 sec. after the motor

is energized, even if the rotation number stabilizes within ± 0.5 rpm.

+24VGND2

54321CN210

Main Board(C169 MAIN-B) Scanner Motor

M2

NC

+5VP_CTL

Figure 2-16. Scanner Motor Control Circuit


2-12 Rev. B

2.1.2.5 Laser Diode Drive

Figure 2-17 shows the laser diode drive circuit. Laser diode emission is controlled by three signals(LDATA, LDAPC1, and LDAPC2) from the main board (C169 MAIN-B).

The LDATA signal is the laser on/off signal. When it is LOW, the laser emits, and when it is HIGH,the laser stops emitting. LDATA is the combination of the two signals in the figure below. If theVIDEO or the FORCED LASER DIODE ON signal is activated (LOW), the LDATA signal will beactive. The VIDEO signal is an image signal sent from the video controller circuit. The FORCEDLASER DIODE ON signal is a laser emission signal to apply the laser beam to the SOS sensor.

The laser diode is forcibly activated after scanner motor M2 turns on. At this time, laser emissionpower is adjusted. LDAPC1 and LDAPC2 are the laser emission power adjust signals; they areanalog signals. LDAPC1 is a tuning, and LDAPC2 is a fine tuning.

If any of the following conditions are detected, the printer indicates a laser error:

The LDAPC1 signal or LDAPC2 signal has been out of the specified range while laser power isadjusted.

SSCANLD_CTL

LDAPC1LDAPC2

L DATA

Main Board(C169 MAIN-B)

LDSOS(PWB-D)

Laser Diode

SOS Sensor

SOS Mirror

Figure 2-17. Laser Diode Drive Circuit

L DATA

Forced Laser Diode ON

VIDE Ofrom the VideoController Circuit(C169 MAIN-B)

Figure 2-18. LDATA Generation Circuit

Scanner Motor On

LDATA

LDAPC1

LDAPC2

P_CTL

Figure 2-19. Laser Emission Power Adjustment Timing


Rev. B 2-13

2.1.2.6 Bias Voltages and Laser Drive Timing

Figure 2-20 is a diagram of the drum charge bias voltage, image transfer bias voltage, and thedeveloping bias voltage control circuit. These bias voltages are generated from the +24 VDC fromthe high-voltage supply board (PWB-F). If the printer detects a case-open condition, the interlockswitch is set to off, which cuts the +24 VDC, which, in turn, cuts the bias voltages.

These bias voltages are controlled by the main board (C169 MAIN-B). The HV-T signal is theimage transfer bias voltage control. While this signal is LOW, the image transfer electrode comb ischarged to from +3 to +6K VDC by the high-voltage supply circuit. HV SEL1 and HV SEL2 areimage transfer bias level control signals.

The HVB signal is the digital signal for developing bias voltage control. This signal controls the biason/off. The BIAS MON signal controls the bias voltage level (–300 V to –375K VDC) using pulsedata. The image density is controlled by the developing bias voltage level.

+24 VDC

InterlockSW

Power SupplyBoard(PWB-E)

+24 VDC

HV-C

HV-THV SEL1

Image TransferBias 3K to 6 K VDC

DevelopingBias-270 to -370 VDC

Drum Charge-2.0 K VDC

MainBoard(C169 MAIN-B)

High Voltage SupplyBoard(PWB-F)

Doctor Toner BladeBias -500 VDC

HV SEL2HV B

BIAS MON

Seal Bias -250 VDC

PWB-S

Figure 2-20. High-Voltage Supply Block Diagram


2-14 Rev. B

Figure 2-21 shows the print process.

Figure 2-22 shows the start print sequence. The printer’s engine starts printing when it receives thePRINT signal from the video controller circuit.

Figure 2-23 is the end of the print sequence.

Brush Roller Charging

Laser Exposure

PC Drum

Image Transfer

Development

Figure 2-21. Print Process

[m sec.]

PrintCommand

Polygon Motor(M3)

Paper Take-upSensor (PC1)

Paper Take-upSolenoid(SL1/2)

Main Motor(M1)

Drum Charge

LaserExposure

Development

ImageTransfer

20

200

500300

2310

150

500

260

1st:770, 2nd:2820

1st: 790 to 13002nd: 2670 to 3080

480

1st: 15102nd: 1680

M3 normal rotation

4000

Figure 2-22. Print Sequence (Start)

[m sec.]

Polygon Motor(M3)

Main Motor(M1)

Drum Charge

LaserExposure

Development

ImageTransfer

Paper ExitSensor (PC3) 5160

850

480

Figure 2-23. Print Sequence (End)


Rev. B 2-15

2.1.2.7 Fan Motor Control

The fan motor (M3) rotates at engine initialization, and stops after 2 sec. The fan motor also rotatesduring printing. When printing ends, the fan motor stops after 3 min. If the following condition isdetected, the printer indicates a Fan motor error.

The voltage equivalent to the motor current of the fan motor remains 160 mV or lower for 2 sec.

2.1.2.8 Power Supply Circuit Function and Safety Protection

The printer’s power supply board (PWB-E) supplies the +5 VDC and +24 VDC. The +24 VDC isused as the bias voltage supply, main motor (M1) drive, scanner motor (M2) drive, fan motor (M3)drive, and solenoid drive. For safety protection, the +24 VDC line is cut when the interlock switch(case open switch) is off.

AC IN

InterlockSW

+24 VDC

+5 VDC

FG

SG

Power Supply Board(PWB-E)

Figure 2-24. Power Supply Circuit Block Diagram


2-16 Rev. B

2.2 VIDEO CONTROLLER OPERATION

The video controller section generates the video signals for received data. The video controllersection is the C169 MAIN-B Board.

2.2.1 C169 MAIN-B Board Operation

Figure 2-26 shows a block diagram of video controller section of the C169 MAIN-B Board. TheC169 MAIN-B Board contains the video controller, which consists of a MB86933H (SPARKlite, 22.5MHz, 32-bit bus) RISC CPU; the standard cells developed for this printer; DRAMs; ROM; and anEEPROM.

C169 MAIN-B Board

Video Controller Section

Engine Controller Section

Figure 2-25. Video Controller Section

ROM 16M(IC21, 22 orIC13, 14,15, 16)

EEPR O M(IC11)

E05A91(IC 2)

Option

RS-232C

D R AM s(IC 17, 18)an dSI M M

A D D R ES SD AT ACONTRO L

E05A93(IC4)

C P UMB86933H(IC1)

RO M8(IC12)

E05A92(IC3)

I /O DATAADDR ES S

Video I/F ParallelI/F

Specif ic I/FLocalTalk

Figure 2-26. C169 MAIN-B Board Block Diagram


Rev. B 2-17

Table 2-1 lists the functions of the main elements of the video controller section in C169 MAIN-BBoard.

Table 2-1. Functions of C169 MAIN-B Board Main Elements

Element Location Function

MB86933H RISCCPU

IC1 The CPU, which operates at 22.5 MHz, manages the videocontroller operation.

E05A91 ASIC IC2 This ASIC contains the following functions:•Address decoding•DRAM management (refresh control, RAS/CAS control)

E05A92 ASIC IC3 This ASIC contains the following functions:•Video signal processing•Toner save function•BiRITech•EMGTech

E05A93 ASIC IC4 This ASIC contains the following functions:•Video interface•Bi-parallel interface•LocalTalk module control•Type-B EX interface box control

Two 8M ROMs orfour 4M ROMs

IC21,22 orIC13,14,15,16

These ROMs are code and font ROMs.

8M ROM IC12 This ROM is a local language (font) ROM option (except inthe U.S. model).

EEPROM IC11 This EEPROM stores the following:•Model type•Printed page counter value•Jam counter value•Printer setting

DRAM IC17,18 These DRAMs are used as the working area of the CPU:input buffer, image buffer, etc.


2-18 Rev. B

Print data and commands transmitted from the host computer via the parallel or optional interfacesare read using the CPU interrupt process and stored in the DRAM input buffer. Data and commandsin the input buffer are processed by the CPU, which then stores the printing bitmap data (imagedata) in the V (video) -RAM (image buffer) area of the DRAM. The size of the V-RAM depends onthe available DRAM size. A “PRINT OVERRUN” occurs when the V-RAM is so small that the CPUcannot process data faster than it is transmitted to the engine controller board. If such an erroroccurs, the user can increase the V-RAM using the printer setting “IMAGE OPTIMUM.”

The E05A91 transmits image data stored in the V-RAM to the E05A92. The E05A92 changes theimage data format from 32-bit parallel data to serial data, and stores it in the internal temporarybuffer. The temporary buffer has a capacity equivalent to several lines. This is controlled by theE05A92, which synchronizes and transmits the temporary buffer’s data to the engine controllerboard. The E05A92 then manipulates the printer data based on the BiRITech, EMGTech, and tonersaver settings.

Host Computer

Input Buffer

Development

VR AM System Area

D R A M

Parallel/Ser ialConverter

RITechEMGTechToner save

TemporaryBuf fer

CPUMB86933H(IC1)

E05A91(IC2)

E05A93(IC4)

E05A92(IC3)

Video

Figure 2-27. Data Flow Diagram


Rev. B 2-19

2.2.1.1 Reset Circuit

The entire system (CPU and external devices) can be initialized if the RESET signal (CPU pin 113)are active simultaneously. This circuit uses an M51938 IC to monitor the supply voltage if a voltagelevel less than 4.25 V is detected. The reset time is approximately 128 ms.

2.2.1.2 Bus Control Circuit

The MB86930 CPU outputs the R/W (read/write) signal, AS (address strobe) signal, and the BE0,BE1, BE2, and BE3 signals (byte enables) to the ASIC E05A91. The ASIC E05A91 uses thesesignals to generate the RD (read strobe) signal, WR (write strobe) signal, and READY signal.

+5 V

Vcc

+ C

OUT

+5 V

M51938FP(IC6)

RESETRSTOUTRSTIN

E05A92(IC3)

Figure 2-28. Reset Circuit

R/W

AS

BE0-3

RD WR

READY

DataBus

AddressBus

CPUMB86933H(IC1)

E05A91(IC2)

Figure 2-29. Bus Control Circuit


2-20 Rev. B

2.2.1.3 Interrupt Control

The ASIC E05A93 determines the priority level of the interrupt and outputs it to terminals IRL0 -IRL3. Then an interrupt is sent to the CPU. When the IRL0-3 value is 1111b, the CPU process is anon-maskable interrupt process. When the IRL0-3 value is 0000b, the CPU process is a standardprocess. When the IRL0-3 is any other value, the CPU process is a maskable interrupt process.

2.2.1.4 DRAM Management

The video controller uses DRAMs for the system RAM and for the V-RAM. In this printer, a standardtwo 512K × 16 DRAMs are mounted in locations IC17 and IC18, providing a total of 1MB. CN2SIMM sockets are provided for optional SIMM memory modules. These SIMM sockets can use 1, 2,4, 8, 16, and 32 MB SIMMs (32-bit bus).

The DRAMs (including optional SIMMs) are managed by the ASIC E05A91. E05A91 outputsMA0-10 (memory address), RAS/CAS, and WE signals.

CAS0,1,2,3

DRAM(IC17)

DRAM(IC18)

DWE

RAS0RAS1,2

MA0-10

CPU DATA BUS

SIMME05A91(IC2)

Figure 2-30. DRAM Management


Rev. B 2-21

2.2.1.5 Parallel Interface Circuit

Figure 2-31 shows a circuit block diagram of the parallel interface. Data sent from the hostcomputer is latched within the E05A93 by the STROBE signal. The E05A93 outputs a BUSY signalautomatically to stop the host computer from sending additional data. The CPU resets the BUSYsignal after reading the data from the E05A93, so that the printer is ready to receive more data fromthe host computer.

Latch

STROBE

BUSY

DATA

E05A93(IC4)

Figure 2-31. Parallel Interface Circuit


2-22 Rev. B

2.2.1.6 Video Interface

The ASIC E05A92 maps the SRAM into a memory space different from the system memory. TheCPU transmits data from the V-RAM (in the system RAM) to the SRAM using the ASIC E05A92.The ASIC cell converts the image data in the SRAM from parallel to serial, synchronizes it, and thentransmits it to the engine controller board. In other words, the SRAM is a temporary buffer used totransmit the image data to the engine controller board. This serial image data is called the VIDEOsignal of video interface.

The signal line of the internal video interface circuit (the C125 MAIN board and engine controllerboard) can be broadly divided into four groups. The first group (PRINT, CPRDY, EPRDY, andPRDY) gives the status of either the video controller or engine controller and indicates whether theyare ready to communicate with each other or ready to start the printing operation. The secondgroup (VSYNC, HSYNC) is the synchronizing signal for the printing operation. The third group(VIDEO) is the serial video data signal. The fourth group (CMD, SRCLK, CTBSY, and ETBSY) isused to transfer the commands (from the video controller) or the status (from the engine controller)for printer mechanism control. Except for VIDEO, PRINT, VSINC, and HSYNC, all signals arecontrolled by ASIC E05A93.

This printer has BiRITech and EMGTech functions standard. These functions modify the VIDEOsignal with the ASIC E05A92.


Rev. B 2-23

Chapter 3 Disassembly and Assembly

Table of Contents

3.1 GENERAL INFORMATION 3-13.1.1 Precautions for Disassembly/Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13.1.2 Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13.1.3 Small Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23.1.4 Service Checks after Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.2 DISASSEMBLY AND ASSEMBLY 3-43.2.1 Housing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.2.1.1 Case Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43.2.2 Removal of the Controller Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.2.2.1 Main Board (C169 MAIN-B Board) Removal. . . . . . . . . . . . . . . . . 3-53.2.3 Disassembling the Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.2.3.1 Optical Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-63.2.3.2 Image Transfer Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-73.2.3.3 Upper Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-93.2.3.4 High-Voltage Supply Board (PWB-F) Removal . . . . . . . . . . . . . . 3-103.2.3.5 Power Supply Unit (PWB-E) Removal. . . . . . . . . . . . . . . . . . . . . 3-113.2.3.6 Fusing Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-123.2.3.7 Fusing Unit Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-153.2.3.8 Main Motor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-203.2.3.9 Paper Take-Up Sensor and Paper Take-Up Solenoid Removal. 3-213.2.3.10 Paper Take-Up Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

List of Figures

Figure 3-1. Removing the Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Figure 3-2. Removing the Shield Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5Figure 3-3. Removing the C169 MAIN-B Board . . . . . . . . . . . . . . . . . . . . . . . . . 3-5Figure 3-4. Removing the Optical Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6Figure 3-5. Removing the Image Transfer Unit -1. . . . . . . . . . . . . . . . . . . . . . . . 3-7Figure 3-6. Removing the Image Transfer Unit -2. . . . . . . . . . . . . . . . . . . . . . . . 3-7Figure 3-7. Moving the Image Transfer Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8Figure 3-8. Reinstalling the Electrode Comb . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8Figure 3-9. Removing the Harness Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9Figure 3-10. Removing the Upper Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9Figure 3-11. Removing the PWB-F Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10Figure 3-12. Removing the PWB-F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10Figure 3-13. Removing the PWB-E Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11Figure 3-14. Removing the PWB-E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11Figure 3-15. Gear and Spring Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12Figure 3-16. Removing the Fusing Guide Plate . . . . . . . . . . . . . . . . . . . . . . . . 3-12Figure 3-17. Removing the Harness Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13Figure 3-18. Removing the Fusing Entrance Guide . . . . . . . . . . . . . . . . . . . . . 3-13Figure 3-19. Removing the Fusing Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14Figure 3-20. Roller Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14Figure 3-21. Removing the Heater Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15Figure 3-22. Removing the Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16Figure 3-23. Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Figure 3-24. Removing the Paper Separator . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17Figure 3-25. Paper Exit Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17Figure 3-26. Removing the G-Rings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18Figure 3-27. Removing the Upper Fusing Roller . . . . . . . . . . . . . . . . . . . . . . . 3-18Figure 3-28. Removing the Lower Fusing Roller . . . . . . . . . . . . . . . . . . . . . . . 3-19Figure 3-29. Removing the Thermal Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19Figure 3-30. Removing the Motor Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20Figure 3-31. Removing the Main Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20Figure 3-32. Removing the Ground Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21Figure 3-33. Removing the Paper Guide ASSY. . . . . . . . . . . . . . . . . . . . . . . . 3-21Figure 3-34. Removing the Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22Figure 3-35. Removing the Paper Take-Up Roller. . . . . . . . . . . . . . . . . . . . . . 3-22

List of Tables

Table 3-1. Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Table 3-2. Screw Types and Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Table 3-3. Checks after Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.1 GENERAL INFORMATION

This chapter describes disassembly/assembly procedures to be used for replacing the mainassemblies of the EPL-5500.

3.1.1 Precautions for Disassembly/Assembly

Follow the precautions below when disassembling/assembling the printer.

WARNING

❒ Disconnect the power cord before disassembling/assembling the printer.❒ Be sure to handle the fusing unit carefully, because the unit remains hot for a whileafter the printer stops printing.❒ If it is necessary to plug in the power cord and operate the printer after disassemblingit, please be careful of the following: 1. Keep your hands and clothing well away from operating or rotating parts (such as rollers, fan motors, etc.). 2. Never touch electric terminals or high-voltage components (such as the charger andthe high voltage unit).

CAUTION

❒ Do not disassemble the photoconductor unit and toner cartridge.❒ If the photoconductor unit is removed from the printer, do not place it in direct sunlight.❒ Do not disassemble the optical unit.❒ Never turn power on if the optical unit is not installed.❒ To prevent damage to ICs from static electricity, do not touch the ICs on the circuit board or the terminals of peripheral electrical components with your hands.❒ Use only the recommended tools to ensure safe and efficient maintenance work. Inappropriate tools may damage the machine.❒ Never open the upper unit until the main motor stops completely. Otherwise, the gears may be damaged.❒ When transporting the printer, remove the photoconductor unit and toner cartridgefrom the printer.❒ When transporting the printer a long distance, pack up the printer using the original packing material.

3.1.2 Tools

Use the tools listed in Table 3-1 for disassembling/assembling the printer and for troubleshooting.

Table 3-1. Tools

Name Commercially Available? Part No.

Philips screwdriver no. 2 Yes B743800200

Regular screwdriver Yes B743000100

Tweezers Yes B641000100

Soldering iron Yes B740200100

Round-nose pliers Yes B740400100

EPL-5500 Service Manual Disassembly and Assembly

Rev. B 3-1

3.1.3 Small Parts

In the following sections, abbreviations are used for small parts, such as screws and washers.Tables 3-2 and 3-3 list these abbreviations.

Table 3-2. Screw Types and Abbreviations

No. Type

Standard

AppearanceSize(mm)

Length(mm)

#1

CB

4 8

#2

CB(S)(P1)

3 6/8

#3

CBS

3 6/8/14

#4

CCS

3 6/8/10/12

#5

CCB

3 8

#6

CBB

3 8

#7

CBS(O)

3 8

Pin

E-Ring

Disassembly and Assembly EPL-5500 Service Manual

3-2 Rev. B

3.1.4 Service Checks after Repair

Check the repaired unit using the following list on completion of servicing.

Table 3-3. Checks after Repair

Item Location Checkpoint Check

Operation Control panel Do all LEDs and button function normally?

Heater lamp Does the heater lamp turn on normally?

Test print (status sheet)

Is the test print performed normally?

Data print Does data print in all modes?

Adjustment Print position Is the gap between the top edge of the paper andthe horizontal line in the status sheet print exactly29.6 mm (1.17 inch).

ROM version Is it the latest version?

Cleaning Is toner and dust removed from the paper path?Is the paper take-up roller cleaned?Is the roller in the fusing unit cleaned?Is the outer surface of the printer clean?

Packing Is the consumable removed from the printer?Is the unit packed securely?Are accessories packed also?


Rev. B 3-3

3.2 DISASSEMBLY AND ASSEMBLY

This section describes and illustrates the procedures for removing and disassembling thecomponents of the EPL-5500. Cleaning is described in Chapter 6. The assembly procedures arenot described, except for special notes where necessary, because assembly can be accomplishedby performing disassembly in reverse.

3.2.1 Housing Removal

This section describes how to remove the cases and the rear frame.

3.2.1.1 Case Removal

1. Push the upper unit lock release button and open the upper unit.

2. Remove each cover in the following turn.

ASSEMBLY POINTS

When reinstalling each cover, securely insert the protrusions of the cover into the cutoutsof the printer frame.

2. Front Cover

1. Left cover

3. OperationCover

4. Rear Cover

Upper unit

Upper unit lockrelease button

Figure 3-1. Removing the Housing


3-4 Rev. B

3.2.2 Removal of the Controller Section

The control section is comprised of the controller board (the C169 MAIN-B Board).

3.2.1.1 Main Board (C169 MAIN-B Board) Removal

CAUTION

Before you remove the video controller board, make sure that you remove any optionalLocalTalk/ serial board or Type-B EX box.

1. Turn the printer so that its right side faces you.

2. Remove the right cover.

3. Remove 2 screws (#3), and then remove the shield case.

4. Disconnect all connectors on the C169 MAIN-B Board.

5. Remove the 5 screws (#4) for the C169 MAIN-B Board.

6. Remove the C169 MAIN-B Board.

Figure 3-2. Removing the Shield Case

Figure 3-3. Removing the C169 MAIN-B Board


Rev. B 3-5

3.2.3 Disassembling the Engine

This section describes disassembling the engine, including the high voltage unit (PWB-F) andpower supply board (PWB-E).

3.2.3.1 Optical Unit Removal

CAUTION

❒ Do not touch the optical unit except at the time of replacement.❒ Do not open the unit under any conditions.❒ Do not remove the circuit board from the optical unit under any conditions.

1. Open the top cover.

2. Remove the right cover, left cover, and front cover. (Refer to Section 3.2.1.1.)

3. Remove the cover shield plate.

4. Disconnect connector CN205 and CN210 from the C169 MAIN Board.

4. Remove the 6 screws (#4) from the optical unit.

5. Remove the optical unit.

Figure 3-4. Removing the Optical Unit


3-6 Rev. B

3.2.3.2 Image Transfer Unit Removal


2. Remove the harness cover A. (Refer to Section 3.2.3.3.)

3. Remove the 2 screws (#5) and holders at both ends of the image transfer unit.

4. Disconnect the 2 connectors and remove the unit.

Figure 3-5. Removing the Image Transfer Unit - 1

Figure 3-6. Removing the Image Transfer Unit - 2


Rev. B 3-7

ASSEMBLY POINTS

After reinstalling the image transfer unit, check that the unit smoothly moves up anddown.

5. Remove the remove the electrode comb.

ASSEMBLY POINTS

When reinstalling the electrode comb, be careful of the direction of installation. Install theelectrode comb so that the terminal of the comb faces the image transfer roller drive gear.

Figure 3-7. Moving the Image Transfer Unit

Figure 3-8. Reinstalling the Electrode Comb


3-8 Rev. B

3.2.3.3 Upper Unit Removal

1. Open the upper unit.

2. Remove the right cover and left cover. (Refer to Section 3.2.1.1.)

3. Disconnect connectors CN202, CN208, and CN211 from the C169 MAIN-B.

4. Remove harness covers A and B, and pull out the CN1 of the PWB-E board.

5. Remove the image transfer unit. (Refer to Section 3.2.3.2.)

6. Slide and remove the unit as in the illustration.

A

B

Figure 3-9. Removing the Harness Cover

Figure 3-10. Removing the Upper Unit


Rev. B 3-9

3.2.3.4 High-Voltage Supply Board (PWB-F) Removal


2. Remove 1 screw (#5) from the PWB-F cover.

3. Remove the PWB-F cover.

4. Remove the 4 screws (#5) from the PWB-F board.

5. Disconnect 2 connectors.

6. Remove the PWB-F board.

Figure 3-11. Removing the PWB-F Cover

Figure 3-12. Removing the PWB-F


3-10 Rev. B

3.2.3.5 Power Supply Unit (PWB-E) Removal

1. Remove the upper unit. (Refer to Section 3.2.3.3.)

2. Remove 6 screws (#4:2, #7:2), and remove the PWB-E cover.

3. Disconnect connector CN207 from the C169 MAIN-B Board.

4. Remove 4 screws (#4) and 2 screws (#6), and remove the PWB-E.

Figure 3-13. Remove the PWB-E Cover

Figure 3-14. Removing the PWB-E


Rev. B 3-11

3.2.3.6 Fusing Unit Removal

1. Open the top cover. (Refer to Section 3.2.3.3.)

2. Remove the image transfer unit. (Refer to Section 3.2.3.2.)

3. Remove 1 screw (#5), and remove the drive tension section of the fusing unit.

4. Remove the transport gear.

5. Release the hook of the spring and remove the drive gear section of the fusing unit.

ASSEMBLY POINTS

When rehooking the spring, be sure to hook it at the correct position.

6. Remove 4 screws (#5), and remove fusing guide plate.

drive gear sectionof the Fusing unit

drive transportgear

hook of thespring

drive tension sectionof the Fusing unit

Figure 3-15. Gear and Spring Position

Figure 3-16. Removing the Fusing Guide Plate


3-12 Rev. B

7. Remove the harness cover.

8. Remove the fusing entrance guide.

Figure 3-17. Removing the Harness Cover

Figure 3-18. Removing the Fusing Entrance Guide


Rev. B 3-13

10. Remove 4 screws (#5), and remove the fusing unit.

ASSEMBLY POINTS

After reinstalling the fusing unit, check the direction of the bushings on the paper exitroller and the connection condition between the roller and the ground plate.

Figure 3-19. Removing the Fusing Unit

Figure 3-20. Roller Position


3-14 Rev. B

3.2.3.7 Fusing Unit Disassembly

This section describes how to remove the paper exit sensor, heater lamp, lower fusing roller, andupper fusing roller.

Heater Lamp

CAUTION

Do not touch the glass surface of the lamp with your bare hands.

1. Remove the fusing guide plate. (Refer to Section 3.2.3.6.)

2. Pull the heater lamp out of the lamp holder from the front side.

ASSEMBLY POINTS

When reinstalling the lamp, position its voltage indication to the left side (non-gear end.).

Figure 3-21. Removing the Heater Lamp


Rev. B 3-15

Thermistor

1. Remove the fusing unit. (Refer to Section 3.2.3.6.)

2. Remove the 1 screw (#4), and remove the thermistor.

ASSEMBL POINTS

When reinstalling the thermistor, wire the harness as shown below.

Figure 3-22. Removing the Thermistor

Figure 3-23. Wiring


3-16 Rev. B

Paper Separator


2. Release the lock of the holder and remove the 3 paper separator.

ASSEMBLY POINTS

When reinstalling the paper separators, be careful of these positions as the middle onediffers from others.

Paper Exit Sensor


2. Remove the paper exit sensor.

Figure 3-24. Removing the Paper Separator

Figure 3-25. Paper Exit Sensor


Rev. B 3-17

Fusing Roller


2. Remove the 2 G-rings from the fusing unit.

CAUTION

When reinstalling the G-rings:❒ Be careful of the direction.❒ Securely position them into the grooves of the fusing roller.

3. Remove the upper fusing roller drive gear.

4. Remove the upper fusing roller.

Figure 3-26. Removing the G-Rings

Figure 3-27. Removing the Upper Fusing Roller


3-18 Rev. B

5. Take out the lower fusing roller.

Thermal Fuse


2. Remove 2 screws (#5), and remove the thermal fuse.

Figure 3-28. Removing the Lower Fusing Roller

Figure 3-29. Removing the Thermal Fuse


Rev. B 3-19

3.2.3.8 Main Motor Removal

1. Remove the housing components. (Refer to Section 3.2.1.1.)

2. Remove 1 screw (#4) which fixing the motor bracket and the 2 screws (#2) which fixing themain motor, and remove the main motor together with the bracket.

Screw (#2)

Screw (#4)

Motor bracket

Figure 3-30. Removing the Motor Bracket

Motor bracket Main motor

Figure 3-31. Removing the Main Motor


3-20 Rev. B

3.2.3.9 Paper Take-Up Sensor and Paper Take-Up Solenoid Removal

1. Remove the housing components. (Refer to Section 3.2.1.1.)

2. Turn over the printer on its back.

3. Remove the 4 screws (#6), and remove the ground plate.

4. Turn up the lifting plate.

ASSEMBLY POINT

When turnning up the lifting plate, be carefull with the grounding plate which overlappingthe lifting plate.

5. Remove the 2 screws (#6), and remove the paper guide assembly.

6. Remove the paper take-up sensor and the paper take-up solenoid from the assembly.

Screw (#6)

Ground plate

Figure 3-32. Removing the Ground Plate

Lifting plateScrew (#6)

Paper guide ASSY.

Turn up the plate

Figure 3-33. Removing the Paper Guide ASSY.


Rev. B 3-21

3.2.3.10 Paper Take-Up Roller Removal

1. Remove the main motor. (Refer to Section 3.2.3.8.)

2. Remove the paper guide assembly. (Refer to Section 3.2.3.9.)

3. Remove the 6 screws (#4:2, #5:4), and remove the left frame.

4. Remove the 2 gears (GEAR 29/65T, GEAR 22/57T), specified in the figure below.

5. At the bottom of the printer, remove the E-ring fixing the paper take-up roller shaft.

6. Unhock the paper take-up roller and slide the shaft to the end of the shaft where the drivengear is attached, then remove the paper take-up roller.

ASSEMBLY POINT

When removing the paper take-up roller from the shaft, be sure not to lose the pin.

Remove Gears (2)

Paper Take-up Roller Shaft

Slide out

Figure 3-34. Removing the Gears

Paper Take-up Roller E-Ring

Paper Take-up Roller Shaft

Figure 3-35. Removing the Paper Take-Up Roller


3-22 Rev. B

Chapter 4 Adjustment

Table of Contents

4.1 ADJUSTMENT 4-14.1.1 Print Position Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

List of Figures

Figure 4-1. Print Position Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 ADJUSTMENTS

This section describes the adjustment procedures for the EPL-5500. You must perform theseadjustments after servicing the printer, especially when any component or part is replaced.

4.1.1 Print Position Adjustment

You can adjust the vertical print position on a sheet of paper by turning the image synchronizingvolume control on the main board (C169 MAIN-B). After replacing a main board, be sure to adjustthe print position using the procedure below.

1. Print a status sheet.

2. Check that the registration gap between the leading edge of the sheet and the horizontal lineprinted on the page is within the following range:

29.6 ± 2.5 mm (1.17 ± 0.01 inches) for a status sheet page on A4/letter paper: If the gap is not correct, adjust the print position as described in the next few steps.

3. Turn printer power off.

4. Open the right cover and shield plate. (See Chapter 3.)

5. Adjust the image synchronizing adjustment volume (VR201) on the main board (C169 MAIN-B)so that the gap for the print position of the horizontal line (down from the top edge of the sheet)becomes 29.6 mm (1.17 inches) .

•Turn VR201 clockwise to increase the gap for the print position of the horizontal line.•Turn VR201 counterclockwise to decrease the gap.

6. Turn on the printer.

7. Print a status sheet again to check the print position.

8. Repeat steps 5 to 7 until the print position is 29.6 mm (1.17 inches).

9. Reattach the shield plate and right case.

29.6 mm

EPSON EPL-5500Status Sheet

Default Settings

Leading Edge

Figure 4-1. Print Position Adjustment

EPL-5500 Service Manual Adjustments

Rev. B 4-1

Chapter 5 Troubleshooting

Table of Contents

5.1 OVERVIEW 5-1

5.2 SELF-DIAGNOSTIC FUNCTION 5-15.2.1 SOFT ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15.2.2 Service Call Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.3 TROUBLESHOOTING 5-45.3.1 Troubleshooting of Abnormal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45.3.2 Print Quality Anomaly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

List of Tables

Table 5-1. SOFT ERROR Code List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Table 5-2. Service Call A Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Table 5-3. Service Call B Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3Table 5-4. Symptoms and Reference Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4Table 5-5. The Printer Does Not Operate at All . . . . . . . . . . . . . . . . . . . . . . . . . 5-5Table 5-6. Both LED Lights Do Not Come On. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5Table 5-7. The LED Does Not Come On (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5Table 5-8. The LED Does Not Come On (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6Table 5-9. The LED Does Not Come On (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8Table 5-10. The LED Does Not Come On (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Table 5-11. Software Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Table 5-12. Fusing Unit Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Table 5-13. The Fan Motor Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Table 5-14. Scanner Motor Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9Table 5-15. Laser Light Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10Table 5-16. Communication Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10Table 5-17. EEPROM Write Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10Table 5-18. Engine Initialize Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10Table 5-19. C1000 or C1001 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10Table 5-20. C1002 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10Table 5-21. C1003 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11Table 5-22. C1130 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11Table 5-23. C1170 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11Table 5-24. C1180 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11Table 5-25. C1300 or C1310 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11Table 5-26. C1320 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12Table 5-27. C1990 Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12Table 5-28. Print Quality Anomaly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

5.1 OVERVIEW

The EPL-5500 has a sophisticated, built-in, self-diagnostic function that reduces the troubleshootingtime by identifying failed parts or components. This self-diagnostic test identifies the troubleshootingproblems for page printers, in which even a trivial failure can result in a serious print qualityproblem.

5.2 SELF-DIAGNOSTIC FUNCTION

This section describes the self-diagnostic function in which the controller automatically checks theoperating conditions of each component. If any abnormality is detected, the printer prints an errormessage on the status sheet or displays a message with the LED lights.

5.2.1 SOFT ERROR

When the printer detects an error relating to a software operation, the printer indicates it as "SOFTERROR" by slowly flashing the red LED light. By pressing the button on the control panel, theprinter prints the status sheet with error information. Table 5-1 lists the soft error codes.

Table 5-1. SOFT ERROR Code List

Error Code Error Condition

C0001 CPU error (reserved)

C0002 CPU error (programming command error)

C0003 CPU error (illegal instruction)

C0004 CPU error (unsupported FPU instruction)

C0007 CPU error (address misalignment)

C0009 CPU error (reserved)

C0010 CPU error (tag overflow)

C0017 to 31 CPU error (unsupported interrupt)

C0036 CPU error (unsupported coprocessor instruction)

C0128 to 254 CPU error (unimplemented instruction)

C0255 CPU error (break error)

Axxxx Software error

Bxxxx Software error

Dxxxx Software error

Fxxxx to Zxxxx Software error

EPL-5500 Service Manual Troubleshooting

Rev. B 5-1

5.2.2 Service Call Error

If the printer detects a fatal error that unrecoverable by the user, the printer indicates it with the LEDlights as "Service Call Error". There are two types of "Service Call Error" as explained below, andeach error is indicated by the LED lights of the control panel in different manner.

Service Call A Errors

Indication: First, yellow and red LED lights go on and off twice alternately. Then, bothyellow and red LED lights go on and off a number of times correspondningto the error number in the table 5-2.

Example: "Fan motor error" (error number = 2)

Order LED(Yellow)

LED(Red) Interval State

1 ON OFF Short Service callerror indication

2 OFF ON Short

3 ON OFF Short

4 OFF ON Short

5 OFF OFF Long Error code ="2" (LED on for2 times)6 ON ON Short

7 OFF OFF Short

8 ON ON Short

9 OFF OFF Long

Table 5-2. Service Call A Error

Error No. Error Code Error Condition

1 E0003 Fusing unit error

2 E0005 Fan motor error

3 E0006 Scanner mirror motor error

4 E0009 Laser light error

5 E0014 Communication error for engine controller and video controller

6 C1200 EEPROM write error

7 C1400 Engine initialize error

Service call B error

Indication: First, yellow and red LED lights go on and off three times alternately toindicate that the printer start to display "Service Call B Error". The errornumber of "Service Call B Error" consists of 4 digits number, and each LEDlight indicates corresponding number from 4th digit to 1st digit in thefollowing order:

Yellow LED: 4th digit (X---)Red LED: 3rd digit(-X--)Yellow LED: 2nd digit (--X-)Red LED: 1st digit (---X)

Troubleshooting EPL-5500 Service Manual

5-2 Rev. B

Note that if any digit of corresponding error number is "0", both yellow andred LED lights go on and off once at the same time.


Rev. B 5-3

Example: "Standard ROM error" (error number = 1130)

Order LED(Yellow)

LED(Red) Interval State

1 ON OFF Short Service Call Error B indication

2 OFF ON Short

3 ON OFF Short

4 OFF ON Short

5 ON OFF Short

6 OFF ON Short

7 OFF OFF Long Error code ="1130"

8 ON OFF Short 4th digit = "1"

9 OFF OFF Long

10 OFF ON Short 3rd digit = "1"

11 OFF OFF Long

12 ON OFF Short 2nd digit = "3"

13 OFF OFF Short

14 ON OFF Short

15 OFF OFF Short

16 ON OFF Short

17 OFF OFF Long

18 ON ON Short 1st digit = "0"

19 OFF OFF Long

Table 5-3. Service Call B Error


5-4 Rev. B

Error No.Error Code Error Condition

4 3 2 1

1 0 0 0 C1000 RAM Validation error

1 0 0 1 C1001 System RAM check error

1 0 0 2 C1002 Standard RAM error

1 0 0 3 C1003 Optional RAM (SIMM) error

1 1 3 0 C1130 Standard ROM error

1 1 7 0 C1170 Optional NLSP fonts ROM error

1 1 8 0 C1180 Optional ROM SIMM error

1 3 0 0 C1300 Optional Type-B I/F error

1 3 1 0 C1310 Unsupported Type-B I/F installed

1 3 2 0 C1320 LocalTalk I/F error

1 9 9 0 C1999 Other hardware error


Rev. B 5-5

5.3 TROUBLESHOOTING

This section describes troubleshooting abnormal operations and print quality problems.

5.3.1 Troubleshooting of Abnormal Operation

This section describes how to detect malfunctions, and determine the cause, and it suggests whatactions to take for various types of malfunctions. Each paragraph refers you to a detailedtroubleshooting table.

Table 5-4. Symptoms and Reference Tables

Symptom Printer Condition ReferenceTable

The printer does not operate at all The heater lamp in fusing unit does not come on,and so neither LED light is on.

5-5

Yellow and LED lights do not comeon

The heater lamp in the fusing unit comes on, butthe LED lights are not on.

5-6

LED light is on The LED light goes on after power on. 5-7

The LED light goes on when printing starts. 5-8

The LED light is on when printing starts from thelower paper cassette.

5-9

Paper jam. 5-10

Software error The printer indicates a software error on the statussheet.

5-11

Fusing unit error A fusing unit error is displayed. 5-12

Fan motor error A fan motor error is displayed. 5-13

Scanner motor error A scanner motor error is displayed. 5-14

Laser light error A laser light error is displayed 5-15

Communication error for engine A communication error is displayed. 5-16

EEPROM write error An EEPROM write error is displayed. 5-17

Engine initialize error An engine initialize error is displayed. 5-18

Error code C1000 or C1001 A C1000 or C1001 is displayed. 5-19

Error code C1002 A C1002 is displayed. 5-20





Error code C1300 or C1310 A C1300 or C1310 is displayed. 5-25




5-6 Rev. B

Table 5-5. The Printer Does Not Operate at All

Cause Step Checkpoint Finding Solution

Connector CN207 on theC169 MAIN-B Board may bedisconnected.

1Is connector CN207 on theC169 MAIN-B Boarddisconnected?

YesConnect CN207 onthe board.

The fuse on the PWB-E boardmay be blown.

2Has the fuse blown on thePWB-E board?

YesReplace the fuse.

PWB-E board may be dead.

3

With power on, is there anoutput of +5 VDC between pin 4(+) and pin 3 (–) for CN207 onC169 MAIN-B Board?

No

Replace the PWB-Eboard.

C169 MAIN-B Board may bedead.

4—

—Replace the C169MAIN-B Board.

Table 5-6. Both LED Lights Do Not Come On


The C169 MAIN-B Board maybe dead.

1If you change the C169 MAIN-BBoard, do the LEDs come on?

YesReplace the C169MAIN-B Board.

Table 5-7. The LED Does Not Come On (1)


Rev. B 5-7


The interlock switch lever isbad.

1Does the switch turn on whenthe case is closed?

NoReplace the interlocklever.

The interlock switch may bedead.

2Does the switch toggle?(Check with a multimeter.)

NoReplace the interlockswitch.

The PWB-E board may bedead.

3

With power on, is there anoutput of +24 VDC betweenpin 1 (+) and pin 2 (–) forCN207 on C169 MAIN-Bboard?

No

Replace the PWB-Eboard.

The paper take-up sensor flagposition may be incorrect.

4Is the paper take-up sensorflag position OK?

NoReposition the papertake-up sensor flag.

The paper exit sensor flagposition may be incorrect.

5Is the paper exit sensor flagposition OK?

NoReposition the paperexit sensor flag.

The paper take-up sensorconnector may bedisconnected.

6Is the paper take-up sensorconnector disconnected? Yes

Connect it.

The paper exit sensorconnector may bedisconnected.

7Is the paper exit sensorconnector disconnected? Yes

Connect it.

The paper exit sensor may bedead.

8—

—Replace it.

The paper take-up sensor maybe dead.

9—

—Replace it.


5-8 Rev. B



The paper take-up solenoidcoil may be open or shorted.

1

Disconnect connector CN203on the C169 MAIN-B Boardand check the coil resistancebetween pin 5 and pin 6 onthe disconnected cable sideof the connector, using amultimeter.Is the resistanceapproximately 80 ohms?

No

Replace the papertake-up solenoid.

If the coil is shorted, check thesolenoid drive circuit using theprocedure below:1. Set the multimeter for voltage.2. Place the (–) terminal of the multimeter on pin 5 of connector CN207 on the C169 MAIN-B Board.3. Place the (+) terminal of the multimeter on pin 6 (GND).With power on, does themultimeter detect any current?

Yes

Replace the papertake-up solenoid andthe C169 MAIN-BBoard.

Continued on next page


Rev. B 5-9

Table 5-8. The LED Does Not Come On (2) (Continued)


The main motor coil may beopen or shorted.

2

Disconnect connector CN206on the C169 MAIN-B Board,and check the coil resistancebetween: pin 1 and pin 2; pin 3and pin 4 (2 points total) on thedisconnected cable side of theconnector, using a multimeter.Pin 1 — Pin 2Pin 3 — Pin 4Are the resistances of all fourpoints approximately 10 ohms?

No

Replace the mainmotor.

If any coil is shorted, check themain motor drive circuit usingthe following procedure:1. Set the multimeter to voltage.2. Place the (–) terminal of the multimeter on pins 1, 2, 3, or 6 of connector CN206 on the C169 MAIN-B board.3. Place the (+) terminal on pin 2 of connector CN207 of the C169 MAIN-B Board (GND).With power on, does themultimeter detect current?

Yes

Replace the C169MAIN-B Board.

Paper take-up sensor flagposition may be incorrect.

3Is paper take-up sensor flagposition incorrect?

YesReseat the papertake-up sensor flag.

Paper take-up roller may bebad.

4—

—Replace the papertake-up roller.


5-10 Rev. B



The standard tray hasproblems.

1Is the standard tray OK?

NoRefer to Table 5-8.

The paper take-up solenoid coilfor the lower paper cassettemay be open or shorted.

2

Disconnect junctionconnector near the solenoidand check the coil resistancebetween pin 1 and pin 2 on thedisconnected solenoid side ofthe connector, using amultimeter. Is the resistanceapproximately 80 ohms?

No

Replace the papertake-up solenoid.

If the coil is shorted, checkthe solenoid drive circuitusing the followingprocedure:1. Set the multimeter to voltage.2. Place the (–) terminal on pin of connector CN2 on the lower paper cassette board.3. Place the (+) terminal on of ground of CN1.With power on, does themultimeter detect anycurrent?

Yes

Replace the papertake-up solenoid andcircuit board of lowerpaper cassette.

The paper take-up roller in thelower paper cassette may bebad.

3—

—Replace the papertake-up roller.


Rev. B 5-11



The consumables may not beinstalled.

1Are the consumables installed?

NoInstall theconsumables.

The paper take-up roller maybe bad.

2Does paper always jam in papertake-up roller area?

YesReplace the papertake-up roller.

The paper feed roller may bebad.

3Does paper always jam in thepaper feed roller area?

YesReplace the paperfeed roller.

The fusing unit may be bad.4

Does paper always jam in thefusing unit?

YesReplace it.

Table 5-11. Software Errors


The C169 MAIN-B Boardmay be bad.

1—

—Replace it.

Table 5-12. Fusing Unit Error


The connector for thethermistor may bedisconnected.

1Is the connector for thethermistor disconnected? Yes

Connect it.

The C169 MAIN-B Board maybe dead.

2Does the heater lamp remainlit up until the error occurs?

YesReplace the C169MAIN-B Board.

The heater lamp or thermalfuse in the fusing unit may bebad.

3Does the heater lamp comeon at power on? No

Replace the heaterlamp or thermal fusein the fusing unit.

The PWB-E board may bedead.

4—

—Replace the PWB-Eboard.

Table 5-13. The Fan Motor Error


Connector CN211 on theC169 MAIN-B Board may bedisconnected.

1Is connector CN211 on theC169 MAIN-B Boarddisconnected?

YesConnect it.

The fan motor may be dead. 2 — — Replace it.

Table 5-14. The Scanner Motor Error


5-12 Rev. B


The optical unit may be bad.1

——

Replace the opticalunit.

The C169 MAIN-B Board maybe bad.

2—



Rev. B 5-13

Table 5-15. Laser Light Error


The optical unit may bedead.

1—

—Replace the opticalunit.

The C169 MAIN-B Boardmay be dead.

2—


Table 5-16. Communication Error



1 — — Replace the C169MAIN-B Board.

Table 5-17. EEPROM Write Error


The EEPROM is may be bad.1

——

Replace theEEPROM.


2—


Table 5-18. Engine Initialize Error



1—


Table 5-19. C1000 or C1001 Error


The optional SIMM may bebad.

1Is operation OK after youremove the optional SIMM?

YesReplace the SIMM.


2—


Table 5-20. C1002 Error



1—



5-14 Rev. B



The optional SIMM may bebad. 1

Is the operation OK afteryou remove the optionalSIMM?

YesReplace the SIMM.


2—




The program ROMs on theC169 MAIN-B Board may bebad.

1Is operation OK after youreplace the ROM? —

Replace the programROMs on the C169MAIN-B Board.


2—




The ROM (IC11) on the C169MAIN-B Board may be bad. 1

Is operation OK after youreplace the ROM? —

Replace the ROM (IC11)on the C169 MAIN-BBoard.


2—




The ROM SIMM may be bad.1

Is operation OK after youreplace the ROM SIMM?

—Replace the ROMSIMM.


2—


Table 5-25. C1300 or C1310 Error


The optional interface card(Type-B) may be bad. 1

——

Replace the optionalinterface card or Type-BEX box.


2—



Rev. B 5-15



The optional interface cardmay be bad.

1—

—Replace the optionalinterface card.


2—





1 — — Replace the C169MAIN-B Board.


5-16 Rev. B

5.4.2 Print Quality Anomalies

This section describes how to isolate possible causes of a print quality problem .

Table 5-28. Print Quality Anomalies

Symptom Possible Cause Part Name Check Item Remedy

Low image density Poor development PWB-F board — Replace the PWB-Fboard.

Image transferproblem

Image transferunit

Check to see if thesurface of imagetransfer unit isdamaged.

Replace the imagetransfer unit.

PWB-F board — Replace the PWB-Fboard.

Defective PC drum Photoconduc-tor unit

— Replace thephotoconductor unit.

Improper printdensity setting

— — Adjust the print densityusing printer settings.

Foggy background Poor development Toner cartridge — Replace the tonercartridge.

Improper charging Drum charge — Replace the PWB-Fboard.

Check the wiring of thePC drum charging biasline.

Replace thephotoconductor unit.


— — Adjust the print densityin printer settings.


Rev. B 5-17

Table 5-28. Print Quality Anomalies (Continued)


Blank print Poor development Imagingcartridge

Check whether thetoner cartridge isinstalled properly.

Reinstall the tonercartridge.


Improper charging PWB-F board — Replace the PWB-Fboard.

Poor imagetransfer

Image transferunit

Check the surface ofthe image transfer unit.

Replace the imagetransfer unit.



— — Adjust the print densityin SelecType.

Defective opticalunit

Optical unit — Replace the optical unit.

Black print Improper charging Photoconduc-tor unit

— Replace thephotoconductor unit.


Poor development Toner cartridge — Replace the tonercartridge.

PWB-F board Replace the PWB-Fboard.


— — Adjust the print densityin SelecType

Defective opticalunit

Optical unit — Replace the optical unit.

White/black lines andbands.

Improper charging Photoconduc-tor unit

— Replace the imagingcartridge.

Poor development PWB-F board — Replace the PWB-Fboard.

Toner cartridge — Replace the tonercartridge.

Dirt on the fusingroller

Fusing roller — Clean the fusing roller.


5-18 Rev. B

Table 5-28. Print Quality Anomalies (Continued)


Toner smudges onthe back side of thesheet.

Improper charging PWB-F — Replace the PWB-Fboard.

Poor development PWB-F — Replace the PWB-Fboard.

Improper fusing Fusing unit — Replace the fusing unit.

Offset print Improper fusing Fusing unit — Replace the fusing unit.

White spots Poor imagetransfer

Image transferunit

— Replace the imagetransfer unit.

PWB-F — Replace the PWB-Fboard.


Rev. B 5-19

Chapter 6 Maintenance

Table of Contents

6.1 MAINTENANCE 6-16.1.1 User Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.1.1.1 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16.1.1.2 Replacement of Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.1.2 Service Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26.1.2.1 Periodic Service Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26.1.2.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

List of Figures

Figure 6-1. Position of the Special Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1Figure 6-2. Cleaning the Electrode Comb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

List of Tables

Table 6-1. Periodic Service Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2Table 6-2. Cleaning Parts and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6-ii Rev. A

6.1 MAINTENANCE

The EPL-5500 is a page printer that uses an electrophotographic printing method. Unlike mostimpact or ink-jet printers, the key components in the electrophotographic process are integrated intotwo expendable units (the photoconductor unit and toner cartridge). Therefore, periodicreplacement of them is essential to ensure high-quality output. Other maintenance items are alsodescribed in this chapter, which is divided into two sections: user maintenance (preventivemaintenance) and service maintenance (repair).

6.1.1 User Maintenance

Users can achieve maximum print quality from the printer by following the procedures below:

6.1.1.1 Cleaning

This section describes the cleaning required for optimal print quality.

❒ External Cleaning

Be sure to disconnect the printer from the power outlet before cleaning it. Wipe the cover andexternal parts of the printer with a damp cloth that has been soaked in a neutral cleaning solution.

❒ Internal Cleaning

Be sure the printer has been disconnected from the power supply and that the fusing unit hascooled down. If the electrode comb of the image transfer unit is dirty, clean it with a special tool,using the following steps:

1. Pick up the electrode comb cleaner from the upper unit.

2. Wipe the electrode comb surface from end to end with the electrode comb cleaner severaltimes.

Figure 6-1. Position of the Special Tool

Electrode Comb Cleaner

Cleaner section

Pre-image Transfer Roller

Image Transfer RearGuide

Figure 6-2. Cleaning the Electrode Comb

EPL-5500 Service Manual Maintenance

Rev. B 6-1

6.1.1.2 Replacement of Consumables

This printer uses a consumable photoconductor unit and toner cartridge. The life of photoconductorunit is 20,000 pages and the toner cartridge life is 3,000 pages, when printing on A4- or letter-sizepages with a 5% print ratio.

If printed images become faint, remove the toner cartridge and gently shake it. This will distributethe toner and may make the images darker. If the image is still too light, replace the toner cartridgecartridge.

If the printed image remains faint after you have replaced the toner cartridge, change the photo-conductor unit.

6.1.2 Service Maintenance

This section describes the periodic service maintenance and the cleaning required.

6.1.2.1 Periodic Service Maintenance

The following units need service maintenance periodically, because they are subject to functionaldeterioration as the total number of printed pages increases, resulting in bad print quality.

Table 6-1. Periodic Service Maintenance

Unit Service Interval

Image transfer unit Approx. 50,000 pages

Fusing unit Approx. 50,000 pages

The service interval listed above is only a reference value. You do not need to perform servicemaintenance exactly at this time.

6.1.2.2 Cleaning

Some parts of this printer require regular cleaning. Clean each part using the specified method andtools. (Refer to Chapter 3 for disassembly procedures.)

Table 6-2. Cleaning Parts and Procedures

Parts Name Cleaning Procedure

Paper take-up roller Wipe the surface with a dry soft cloth.

Upper fusing roller (in fusing unit) Dip a soft cloth in silicon oil and wipe the dust off.

Lower fusing roller (in fusing unit)

Thermistor (in fusing unit) Dip a soft cloth in denatured alcohol and wipe thedust off.

Paper separator and rollers (in fusing unit)

Maintenance EPL-5500 Service Manual

6-2 Rev. B

EPL-5500 Service Manual Maintenance

Rev. B 6-3

Appendix A Reference Materials

Table of Contents

A.1 CONNECTOR PIN ASSIGNMENTS A-1A.1.1 Main Board (C169 MAIN-B Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4

A.2 CIRCUIT DIAGRAM A-11

A.3 CIRCUIT BOARD COMPONENT LAYOUT A-16

List of Figures

Figure A-1. Cable Connections for the Video Controller . . . . . . . . . . . . . . . . . . A-1Figure A-2. Cable Connections for the Engine Controller . . . . . . . . . . . . . . . . . A-2Figure A-3. C169 MAIN-B Circuit Diagram (1/2) . . . . . . . . . . . . . . . . . . . . . . . A-11Figure A-4. C169 MAIN-B Circuit Diagram (2/2) . . . . . . . . . . . . . . . . . . . . . . . A-13Figure A-5. PWB-E (120V) Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . A-14Figure A-6. PWB-E (220/240V) Circuit Diagram . . . . . . . . . . . . . . . . . . . . . . . A-15Figure A-7. C169 MAIN-B Component Layout (Front) . . . . . . . . . . . . . . . . . . . A-16Figure A-8. C169 MAIN-B Component Layout (Rear) . . . . . . . . . . . . . . . . . . . A-17

List of Tables

Table A-1. Board Connector Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3Table A-2. CN2 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4Table A-3. CN4 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5Table A-4. CN5 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7Table A-5. CN202 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8Table A-6. CN203 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8Table A-7. CN204 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9Table A-8. CN205 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9Table A-9. CN206 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9Table A-10. CN207 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9Table A-11. CN208 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-9Table A-12. CN209 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10Table A-13. CN210 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10Table A-14. CN211 Pin Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10

A.1 CONNECTOR PIN ASSIGNMENTS

Figures A-1 and A-2 illustrate the interconnection of the primary components. Table A-1 gives thesize and a description of each connector.

CN1

Parallel I/F

CN2

RAM SIMM

CN4LocalTalk/Serial I/Fmodule or Type-B EX

ROM SIMM CN5

C169 MAIN-B BoadVideo Controller Section

Figure A-1. Connections for the Video Controller

EPL-5500 Service Manual Appendix

Rev. A A-1

1234

M 1

Main motor

5432

M 2

Polygon motor

1234

1

C N 1 M

CN206ϕAϕAϕBϕB

POLYGON CTLDC 5VG N DD C2 4VN.C.

12

M 3

Fan motor CN211F A ND C2 4V

CN2 10

1231

23C N3 S

ANODE(PC1)G N DP C3

PC 3

CN2 08Paper Exit sensor

1231

23C N1 S

ANODE (PC1)G N DP C1

PC 1

CN2 03Paper Take-up sensor

456

N.C.D C24VFEE D1

SL 1 121

2

Paper Take-upsolenoid

CN2S

Fusing rollerThermistor

TH 112

THERMOSTORDC5V

CN202

123

HV CHV THV SEL1

456

HV SEL2HV BBIAS MON

78

12345678

P WB -S87654321

CN204

P WB -F

Highvoltageunit

87654321

GN DDC24V

CN1F

Imagetransferhousing

Imagetransfercharger

123

DC24VFEE D2N.C.

456

DC5VG N DP EMP2

78

PSIZE02NDBIN

91 0

mm/inchUNIVERSAL

1 18

CH EC K1

P WB -A87654321

C N1 A

1211109

CN2 09

12

SL2

Paper Take-upsolenoid

D C24VFE ED 2

2nd paper feedingunit (option)

CHECK 2

7654321

1234567

P WB -D

CN205 CN1D

Laser diodedrive board

12345

12345

DC5VL DATA

G N DLD APC1 (LDVR1)LD APC1 (LDVR2)

C O

S SCAN

CN2 07

PWB -E

123

H 1

TF 1

Fusing rol lerheater lamp

Fusing rol ler thermal fuse

CN1EC N3 E

DC24VGNDGND

D C5 V

FUSE R LA MP

Inter lockswitch

Inletboard

Power S W

Inlet

Powerunit

HEAT NN.C.

HEA T L

C169 MAIN-BBoard

Figure A-2. Cable Connections for the Engine Controller

Appendix EPL-5500 Service Manual

A-2 Rev. A

Table A-1. Board Connector Summary

Connector Description Pins Reference

Main Board (C169 MAIN-B Board)

CN1 Centronics parallel interface 36 pins Table 1-8

CN2 Connector for RAM SIMM 72 pins Table A-2

CN3 (Not used) 20 pins —

CN4 Connector for LocalTalk/Serial I/F Module or Type-B EX 60 pins Table A-3

CN5 Connector for ROM SIMM 72 pins Table A-4



CN202 Connector for thermistor 2 pins Table A-5

CN203 Connector for paper take-up solenoid and paper take-up sensor 6 pins Table A-6

CN204Connector for high-voltage supply board (PWB-S and PWB-Fboard)

8 pins Table A-7

CN205 Connector for optical unit 7 pins Table A-8

CN206 Connector for motor 4 pins Table A-9

CN207 Connector for power supply board (PWB-E board) 5 pins Table A-10

CN208 Connector for paper exit sensor 3 pins Table A-11

CN209 Connector for lower paper cassette 12 pins Table A-12

CN210 Connector for optical unit 5 pins Table A-13

CN211 Connector for fan 2 pins Table A-14

Power Supply Board (PWB-E Board)

CN1 Connector for AC power inlet 4 pins —

CN2 Connector for main board 5 pin Table A-11

CN3 Connector for heater lamp 3 pins —

High-Voltage Supply Board (PWB-F Board)

CN1 Connector for main board 8 pins Table A-7

CN2 Connector for paper take-up sensor 3 pins —


Rev. A A-3

A.1.1 Main Board (C169 MAIN-B Board)

Table A-2. CN2 Pin Assignments

Pin No. Signal Name I/O Description1 Vss — Ground2 DQ0 I/O Data bus bit 03 DQ16 I/O Data bus bit 164 DQ1 I/O Data bus bit 1

5 DQ17 I/O Data bus bit 17

6 DQ2 I/O Data bus bit 27 DQ18 I/O Data bus bit 188 DQ3 I/O Data bus bit 39 DQ19 I/O Data bus bit 19

10 Vcc — +5 VDC11 NC — Not connected12 MA0 O Memory address bit 0

13 MA1 O Memory address bit 1

14 MA2 O Memory address bit 215 MA3 O Memory address bit 316 MA4 O Memory address bit 417 MA5 O Memory address bit 518 MA6 O Memory address bit 619 MA10 O Memory address bit 1020 DQ4 I/O Data bus bit 4


22 DQ5 I/O Data bus bit 523 DQ21 I/O Data bus bit 2124 DQ6 I/O Data bus bit 625 DQ22 I/O Data bus bit 2226 DQ7 I/O Data bus bit 727 DQ23 I/O Data bus bit 2328 MA7 O Memory address bit 7

29 NC — Not connected

30 Vcc — +5 VDC31 MA8 O Memory address bit 832 MA9 O Memory address bit 933 RAS3 O RAS 334 RAS2 O RAS 235 MP2 — Not used36 MP0 — Not used

37 MP1 — Not used

38 MP3 — Not used39 Vss — Ground40 CAS0 O CAS 041 CAS2 O CAS 242 CAS3 O CAS 343 CAS1 O CAS 144 RAS0 O RAS 0

45 RAS1 O RAS 1

46 NC — Not connected47 WE O Write enable48 NC — Not connected49 DQ8 I/O Data bus bit 8


A-4 Rev. A

Table A-2. CN2 Pin Assignments (Continued)

Pin No. Signal Name I/O Description50 DQ24 I/O Data bus bit 2451 DQ9 I/O Data bus bit 952 DQ25 I/O Data bus bit 2553 DQ10 I/O Data bus bit 1054 DQ26 I/O Data bus bit 2655 DQ11 I/O Data bus bit 11


57 DQ12 I/O Data bus bit 1258 DQ28 I/O Data bus bit 2859 Vcc — +5 VDC60 DQ29 I/O Data bus bit 2961 DQ13 I/O Data bus bit 1362 DQ30 I/O Data bus bit 3063 DQ14 I/O Data bus bit 14


65 DQ14 I/O Data bus bit 1466 NC — Not connected67 PO1 — Not used68 PO2 — Not used69 PO3 — Not used70 PO4 — Not used71 NC — Not connected

72 Vss — Ground


Pin No. Signal Name I/O Description1 PCLK O Clock

2 RST O Reset signal

3 GND — Ground4 GND — Ground5 GND — Ground6 GND — Ground7 DB0 I/O Data bus bit 08 DB1 I/O Data bus bit 19 DB2 I/O Data bus bit 2

10 DB3 I/O Data bus bit 3

11 DB4 I/O Data bus bit 412 DB5 I/O Data bus bit 513 DB6 I/O Data bus bit 614 DB7 I/O Data bus bit 715 AB0 O Address bus bit 016 AB1 O Address bus bit 117 AB2 O Address bus bit 2

18 AB3 O Address bus bit 3

19 AB4 O Address bus bit 420 CS O Select signal


Rev. A A-5


Pin No. Signal Name I/O Description21 RD O Read strobe signal

22 WR O Write strobe signal

23 IREQ O Interrupt to option

24 NMI O Non-maskable interrupt25 DREQ O Data request26 DTCT I LT option used/unused27 VCC — +5 VDC28 VCC — +5 VDC29 VCC — +5 VDC

30 VCC — +5 VDC

31 TXD+ — Not used

32 TXD- — Not used33 RXD+ — Not used34 RXD- — Not used35 DTR — Not used36 CTS — Not used37 NC — Not used

38 NC — Not used

39 LCD — Not used

40 SWRD — Not used41 GND — Ground42 GND — Ground43 GND — Ground44 GND — Ground45 RESET O Reset signal

46 INH O I/F disabled

47 CMREQ I Request command

48 WRRDY I I/F ready49 RDREQ I Data read request50 WRT O Write enable51 RDT O Read enable52 TYPB I Type-B I/F used/unused53 TXD — Not used

54 READY — Not used

55 RXD — Not used

56 NC — Not connected57 VCC — +5 VDC58 VCC — +5 VDC59 VCC — +5 VDC60 VCC — +5 VDC


A-6 Rev. A


Pin No. Signal Name I/O Description1 Vss — Ground2 D0 I/O Data bus bit 03 D16 I/O Data bus bit 164 D1 I/O Data bus bit 15 D17 I/O Data bus bit 176 D2 I/O Data bus bit 2

7 D18 I/O Data bus bit 18

8 D3 I/O Data bus bit 39 D19 I/O Data bus bit 19

10 Vcc — +5 VDC11 RD O Read strobe12 A0 O Address bit 013 A1 O Address bit 114 A2 O Address bit 2

15 A3 O Address bit 3

16 A4 O Address bit 417 A5 O Address bit 518 A6 O Address bit 619 A10 O Address bit 1020 D4 I/O Data bus bit 421 D20 I/O Data bus bit 2022 D5 I/O Data bus bit 5


24 D6 I/O Data bus bit 625 D22 I/O Data bus bit 2226 D7 I/O Data bus bit 727 D23 I/O Data bus bit 2328 A7 O Address bit 729 A19 O Address bit 1930 Vcc — +5 VDC

31 A8 O Address bit 8

32 A9 O Address bit 933 A20 O Address bit 2034 EEP O Chip select35 RESET O Reset signal36 A21 O Address bit 2137 A22 O Address bit 2238 A23 O Address bit 23

39 Vss — Ground

40 A11 O Address bit 1141 A13 O Address bit 1342 A14 O Address bit 1443 A12 O Address bit 1244 CS0 O Chip select45 CS1 O Chip select46 A18 O Address bit 18

47 WR O Write enable

48 A17 O Address bit 1749 D8 I/O Data bus bit 8


Rev. A A-7


Pin No. Signal Name I/O Description50 D24 I/O Data bus bit 2451 D9 I/O Data bus bit 952 D25 I/O Data bus bit 2553 D10 I/O Data bus bit 1054 D26 I/O Data bus bit 2655 D11 I/O Data bus bit 11


57 D12 I/O Data bus bit 1258 D28 I/O Data bus bit 2859 Vcc — +5 VDC60 D29 I/O Data bus bit 2961 D13 I/O Data bus bit 1362 D30 I/O Data bus bit 3063 D14 I/O Data bus bit 14


65 D14 I/O Data bus bit 1466 A16 O Address bit 767 R/B — Not used68 NC — Not connected69 NC — Not connected70 NC — Not connected71 A15 O Address bit 15

72 Vss — Ground


Pin No. Signal Name I/O Description1 +5 — +5 VDC

2 TH I Fuser temperature


Pin No. Signal Name I/O Description1 PS1 I Paper take-up sensor

2 GND1 — Ground

3 PS1 I Paper take-up sensor4 NC — No connected5 +24V — +24 VDC6 FEED1 O Paper take-up solenoid drive


A-8 Rev. A


Pin No. Signal Name I/O Description1 HV-C —2 HV-T I3 HV-S —4 HV-S2 —5 HV-B6 BIAS-M O7 GND2 — Ground

8 +24 — +24 VDC


Pin No. Signal Name I/O Description1 SSCAN I Horizontal synchronous signal

2 LD-CTL I Laser power signal3 LDAPC2 O Laser power adjust 24 LDAPC1 O Laser power adjust 15 GND1 — Ground6 LDATA O Laser data7 +5V — +5 VDC


Pin No. Signal Name I/O Description1 A O Motor phase A2 A O Motor phase A3 B O Motor phase B

4 B O Motor phase B


Pin No. Signal Name I/O Description1 +24V — +24 VDC

2 GND2 — Ground

3 GND1 — Ground

4 +5V — +5 VDC5 FUSER O Heater lamp on


Pin No. Signal Name I/O Description1 PS3 I Paper exit sensor (+5V)2 GND — Ground3 PS3 I Paper exit sensor (SGL)


Rev. A A-9


Pin No. Signal Name I/O Description1 +24 V — +24 VDC2 FEED2 O Lower cassette solenoid on3 NC — No connected4 +5V — +5 VDC5 GND1 — Ground6 PE2 I Lower cassette paper empty

7 PSIZ0

8 PSIZ19 PSIZE2

10 CHECK111 CHECK212 CHECK3


Pin No. Signal Name I/O Description1 NC — Not connected

2 +24V — +24 VDC3 GND2 — Ground4 +5V — +5 VDC5 P-CTL O Polygon motor control


Pin No. Signal Name I/O Description1 +24V — +24 VDC2 FAN O Fan control


A-10 Rev. A

A.2 CIRCUIT DIAGRAMS 16 19 20 21 22 23 24 25 26 27 28 29 30 33

2 3 4 5 6 7 8 9

1 36 14 31

10 11 12 13 32

35 17 15 18 34

CN1

PIF

R8 1K

R29 1K

1 2 3 4

8 7 6 5

RM7

100

C26470P

C27470P

C28470P

C29470P

1

2

3

4

8

7

6

5

RM81K

1 2 3 4

8 7 6 5

RM5 1K

DATA1DATA2DATA3DATA4DATA5DATA6DATA7DATA8

STRBX

ACKX

AUTOXSELINX

INITX

1 2 3 4

8 7 6 5

RM1

68

1 2 3 4

8 7 6 5

RM2

68

1

2

3

4

8

7

6

5

RM101K

1

2

3

4

8

7

6

5

RM91K

R1110K

1

2

3

4

8

7

6

5

RM610K AD0 34

AD1 33AD2 32AD3 31AD4 30AD5 29AD6 28AD7 27

CE 55RW 56READY 57

IRL0 40IRL1 39IRL2 38IRL3 37

MCLK 53RESET 54

PIRDY 41SIRDY 42TBRDY 43SCRDY 44

OPTI0 49OPTI1 48OPTI2 47OPTI3 46OPTI4 45NMI 50

EXRD102EXWR101

EXIN0 2EXIN1 1EXIN2128EXIN3127

CTSL 69N.C. 63N.C. 64N.C. 65N.C. 66N.C. 70

VCC 4VCC 13VCC 26VCC 35VCC 52VCC 68VCC 77VCC 90VCC 99VCC115

GND 3GND 14GND 25GND 36GND 51GND 67GND 78GND 89GND100GND116

TEST0 62TEST1 61

DATA1 98DATA2 97DATA3 96DATA4 95DATA5 94DATA6 93DATA7 92DATA8 91

DIR 88STRB 80

SELIN 81AUTO 82INIT 79

ACK 87BUSY 86

PE 85SELOT 83

ERR 84

TXD 76RXD 73RTS 75CTS 72

SRXD 74BCLK 71

EPRDY 121CPRDY 112PRRDY 120PRINT 111

PRFD 110ETBSY 119CTBSY 113SRCLK 114

STS 118CMD 117

VSREQ 122

LCD 20LED 21

SWRD 22LCLK 23

SWINT 126BZ 24

TYPB 108RDT 107WRT 106INH 109

RDREQ 123WRRDY 124CMREQ 125

EXTOUT0 60EXTOUT1 59EXTOUT2 58

EXT 105RDE 104WRE 103

DB0 12DB1 11DB2 10DB3 9DB4 8DB5 7DB6 6DB7 5

AB0 19AB1 18AB2 17AB3 16AB4 15

IC4

E05A93AA

AD0AD1AD2AD3AD4AD5AD6AD7

R26

10KR27

10K

TP1TP

AD0AD1AD2AD3AD4AD5AD6AD7

AD[0..7]

D0 2D1 3D2 4D3 5D4 6D5 7D6 8D7 9D8 12D9 13D10 14D11 15D12 16D13 17D14 18D15 19D16 22D17 23D18 24D19 25D20 26D21 27D22 28D23 29D24 32D25 33D26 34D27 35D28 36D29 37D30 38D31 39

A2 48A3 49A4 50A5 51A6 52A7 53A8 54A9 55A10 56A11 57A12 58A13 59A14 60A15 61A16 62A17 63A18 64A19 65A20 66A21 67A22 68A23 69A24 70A25 88

A28 89A29 90A30 91A31 92

BE0 71BE1 72BE2 73BE3 74

AS 93RD/WR 94READY116TMR_OV 75LOCK 95

BREQ118BGRNT 45

MCLK 46RESET 47

EXBREQ 87EXBGRNT117RDYIN 78

RD123WR124EEP115

TEST0 76TEST1 77

AD0 97AD1 98AD2 99AD3 102AD4 103AD5 104AD6 105AD7 106

IOALE 126IOR/W 125IORDY 86

IOREQA 82IOREQB 83IOREQC 84IOREQD 85

EOP 96DMAIREQ 119

VDCSA 140VDREQA 43VDREQB 44

VDDMA 141VDDMB 142

VDNULL 143VDEOL 144

CAS0 110CAS1 111CAS2 112CAS3 113

RAS0 154RAS1 155RAS2 156RAS3 157RAS4 158

DWE 139

MA0 127MA1 128MA2 129MA3 130MA4 131MA5 134MA6 135MA7 136MA8 137MA9 138

MA10 150

ICG 149ICDS 147ICRW 152ICM1 153ICM0 151ICA1 148

VDD 1VDD 10VDD 20VDD 30VDD 40VDD 81VDD 100VDD 108VDD 114VDD 120VDD 132VDD 145

VSS 11VSS 21VSS 31VSS 41VSS 42VSS 79VSS 80VSS 101VSS 107VSS 109VSS 121VSS 122VSS 133VSS 146VSS 159VSS 160

IC2

E05A91KA

R30 10K

R31

10K

R69 10KR70 10KR108 10K

A[2..27]

IRL[0..3]

DR0DR1DR2DR3DR4DR5DR6DR7DR8DR9DR10DR11


A2 155A3 156A4 157A5 158A6 159A7 160A8 1A9 2A10 3A11 4A12 5A13 8A14 9A15 10A16 11A17 13A18 14A19 16A20 17A21 19A22 22A23 24A24 25A25 26A26 29A27 30

BE0 121BE1 123BE2 124BE3 125

ASI0 126ASI1 127ASI2 128ASI3 129

CS0 100CS1 102CS2 103CS3 104CS4 106CS5 107

IRL0 146IRL1 147IRL2 148IRL3 149

AS 91RD/WR 92READY 89

SAMEPG 99TMR_OV 120

LOCK 93ERROR 96

MEXC 88BREQ 90

BGRNT 94

XTAL1 115XTAL2 112

CLKOUT1 116CLKOUT2 117

RESET 134

RAS0 68RAS1 130

CAS0 12CAS1 15CAS2 18CAS3 23

DWE 95

VCC 6VCC 20VCC 28VCC 32VCC 37VCC 38VCC 49VCC 52VCC 63VCC 66VCC 74VCC 76VCC 87VCC 98VCC101VCC109VCC111VCC118VCC132VCC135VCC139VCC144VCC151VCC154

VSS 7 VSS 21 VSS 27 VSS 33 VSS 36 VSS 39 VSS 48 VSS 51 VSS 56 VSS 67 VSS 75 VSS 77 VSS 79 VSS 86 VSS 97 VSS105 VSS110 VSS114 VSS119 VSS131 VSS136 VSS138 VSS145 VSS150 VSS153

N.C. 42N.C. 57N.C. 60N.C.122N.C.141

BMODE8137BMODE16140

TMS143TRST133TCK108TDI142TDO152CLK_ECB113

IC1

MB86933H

D0D1D2D3D4D5D6D7D8D9D10D11

A24A25A26A21

C20.1U

R111 68R112 68R113 68R114 68R115 68R116 68R117 68R118 68R119 68R120 68R121 68R122 68R123 68R124 68R125 68R126 68R127 68R128 68R129 68R130 68

C30.1U

C40.1UC470.1U

C480.1U

D12D13D14D15D16D17D18D19D20D21D22D23D24D25D26D27D28D29D30D31

A3A4A5A6A7A8A9A10A11A12A13A14A15A16A17A18A19A20

A2

D 2

CP 3Q 5

Q 6

S

4

R 1

IC8A

74F74

R28

68

R71

10K

A2A3A4A5A6A7A8A9A10A11A12A13A14A15A16A17A18A19A20

DR12DR13DR14DR15DR16DR17DR18DR19DR20DR21DR22DR23DR24DR25DR26DR27DR28DR29DR30DR31

R3

10K

1 2 3 4

8 7 6 5

RM13

68

1 2 3 4

8 7 6 5

RM3

27

1 2 3 4

8 7 6 5

RM4

27

R22 33R23 33R24 33R25 33

MA0MA1MA2MA3

MA4MA5MA6

DQ0 2DQ1 4DQ2 6DQ3 8DQ4 20DQ5 22DQ6 24DQ7 26DQ8 49DQ9 51DQ10 53DQ11 55DQ12 57DQ13 61DQ14 63DQ15 65DQ16 3DQ17 5DQ18 7DQ19 9DQ20 21DQ21 23DQ22 25DQ23 27DQ24 50DQ25 52DQ26 54DQ27 56DQ28 58DQ29 60DQ30 62DQ31 64

MP0 36MP1 37MP2 35MP3 38

A0 12A1 13A2 14A3 15A4 16A5 17A6 18A7 28A8 31A9 32A10 19

N.C. 11N.C. 29N.C. 46N.C. 48N.C. 66N.C. 71

CAS0 40CAS1 43CAS2 41CAS3 42

RAS0 44RAS1 45RAS2 34RAS3 33

WE 47

VCC 10VCC 30VCC 59

VSS 1VSS 39VSS 72

PD1 67PD2 68PD3 69PD4 70

CN2

SIMM/72PIN

R59 10KR60 10K

J20 J

J21 J

DR0DR1DR2DR3DR4DR5DR6DR7DR8DR9DR10DR11DR12

R4

91R5

91

IRL0IRL1IRL2IRL3

TP2

TP

C10

0.1U

C14

0.1U

R12 100

R13 100

R14 100

R15 100

R16 100

13 12

IC7F

74LS07

11 10

IC7E

74LS07 9 8

IC7D

74LS07 5 6

IC7C

74LS07 3 4

IC7B

74LS07 1 2

IC7A

74LS07

BUSYPESELOTERRX

+5VCGN.C.N.C.N.C.

IC7-7 IC7-14

EPRDY 5CPRDY 13PRRDY 4PRINT 11ETBSY 7CTBSY 10SRCLK 12STS 8CMD 9TOD 6HSYNC 3VIDEO 14

RESET 2DOTCLK 1

+5 16+5 18+5 20

GND 15GND 17GND 19

CN3

EIF

R39 3.3K

R40 68

R41 68

R42 68

R43 68

C32 100P

C33 100P

C34 100P

C35 100P

C36 100P

C37 100P

R61 3.3K

R62 3.3K

R63 3.3K

R64 3.3K

R65 3.3K

DB[0..7]A

B[0..4]

J11 PJ

J12 PJ

J13 PJJ14 PJ

J15 PJ

C110.1U


A0 53A1 54A2 55A3 56A4 57A5 58A6 59A7 60

R/W 62READY 70

CS 61DMAREQ0 44DMAREQ1 45DMAMOD0 67DMAMOD1 68DNULL 69EOL 63

RSTOUT 43RSTIN 46

MCLK 52VCLKIN 79CLK12 66CLK14 47CLK18 48CLK16 88

HSOUT 86VSYNC 87SDIN 42CLKOUT 49

PRINT 75VSREQ 77HSYNC 76

VDOOUT 89

RTST0 92RTST1 93RTST2 94RTST3 95RTST4 96RTST5 97RTST6 98RTST7 99

RCHK0 82RCHK1 83RCHK2 84RCHK3 85

TEST1 71TEST2 72TEST3 73TEST4 74

VDD 10VDD 20VDD 31VDD 41VDD 50VDD 64VDD 81VDD 91VDD 100

VSS 1VSS 11VSS 21VSS 30VSS 40VSS 51VSS 65VSS 78VSS 80VSS 90

IC3

E05A92KA

C15

0.1U

DB0DB1DB2DB3DB4DB5DB6DB7

DR0DR1DR2DR3DR4

R149 68

R146 68R147 68R148 68

R150 68

AB0AB1AB2AB3AB4

MA0MA1MA2MA3MA4MA5MA6MA7MA8MA9MA10

DR13DR14DR15DR16DR17DR18DR19DR20DR21DR22DR23DR24DR25DR26DR27DR28DR29DR30DR31

R18 27

R19 22

R20 27R21 27

4

5 6

IC23B

74AS08

12

1311

IC23D

74AS08

9

10 8

IC23C

74AS08

+5 14

GND 7

IC23

VCC_GNDC510.1U

MA7

MA8MA9MA10

C50.1U

C60.1U

C170.1U

C430.1U

A0 10A1 9A2 8A3 7A4 6A5 5A6 4A7 3A8 41A9 40A10 39A11 38A12 37A13 36A14 35A15 34A16 33A17 2A18 1N.C. 42

CE 11OE 13W/B/V 32

O0 14O1 16O2 18O3 20O4 23O5 25O6 27O7 29O8 15O9 17O10 19O11 21O12 24O13 26O14 28O15 30

VDD 22

GND 12GND 31

IC12

EPROM8M*16

1

3

2

J25J/3

1

2

3

IC23A74AS08

R14568

A2A3A4A5A6A7A8A9A10A11A12A13A14A15A16A17A18A19A20

Local Language

DR0DR1DR2DR3DR4DR5DR6DR7DR8DR9DR10DR11DR12DR13DR14DR15

R34

10K

R35

10K

R36

68

R37

68

1 2 3 4

8 7 6 5

RM12

10K

1 2 3 4

8 7 6 5

RM11

68R110

68

R109

68

R143 68R144 68

A21A22A23A24A25

A26

R131 68R132 68R133 68R134 68R135 68R136 68

R137 68R138 68R139 68R140 68

J28 PJJ29 PJ

J30 PJ

A21A22A23A24A25A26A27

IRL0IRL1IRL2IRL3

CSX0CSX1CSX2CSX3CSX4CSX5

R38

68

A26 3A27 4A28 5A29 6A30 7A31 8

ASI0 9ASI1 10ASI2 11ASI3 12

CS0 13CS1 14CS2 15CS3 16CS4 17CS5 18

IRL0 29IRL1 30IRL2 31IRL3 32

AS 19RD/WR 20READY 27

SAMEPG 21TMR_OV 22

LOCK 23ERROR 24

MEXC 28BREQ 25

BGRNT 26XTAL1 34

CLKOUT1 35CLKOUT2 36

RESET 33

+5V 1+5V 2GND 37GND 38GND 39GND 40

CN7

CPU_BUS

J32 PJ

A26

CSX[0..5]

1 3

2J2

J/3


A0 49A1 50A2 51A3 52A4 53A5 54A6 55A7 56A8 57A9 58A10 59A11 60A12 61A13 62A14 63A15 64A16 65A17 66A18 67A19 68A20 69A21 70A22 71A23 72

CSI0 39CSI1 40

CSO0 41CSO1 42

RD 43WR 44

BWE0 45BWE1 47BWE2 46BWE3 48

RD/BY 73RESET 74

VPP 75VPP 76

VCC 1VCC 2VCC 3VCC 4

VSS 37VSS 38VSS 77VSS 78VSS 79VSS 80

CN6

ROM_BUS

R107 68

CSX0

DR0DR1DR2

C7

0.1U

A0 12A1 11A2 10A3 9A4 8A5 7A6 6A7 5A8 27A9 26A10 23A11 25A12 4A13 28A14 29A15 3A16 2A17 30A18 31

D0 13D1 14D2 15D3 17D4 18D5 19D6 20D7 21

CE 22OE 24

VPP 1

VDD 32

GND 16

IC13

EPROM 4M*8/DIP


D0 13D1 14D2 15D3 17D4 18D5 19D6 20D7 21

CE 22OE 24

VPP 1

VDD 32

GND 16

IC14

EPROM 4M*8/DIP

R7310K


A2A3A4A5A6A7

DR0DR1DR2DR3DR4DR5DR6DR7

DR8DR9DR10DR11DR12DR13

A20

A0 16A1 17A2 18A3 19A4 22A5 23A6 24A7 25A8 26

RAS 14LCAS 29UCAS 28

WE 13OE 27

VCC 1VCC 6VCC 20

VSS 21VSS 35VSS 40

IO1 2IO2 3IO3 4IO4 5IO5 7IO6 8IO7 9IO8 10IO9 31IO10 32IO11 33IO12 34IO13 36IO14 37IO15 38IO16 39

NC 11NC 12NC 15NC 30

IC17

DRAM4M*16/SOJ

MA0MA1MA2MA3MA4MA5MA6MA7MA8

DR0DR1DR2DR3DR4DR5DR6DR7DR8DR9DR10DR11

C90.1U

1 3

2J26 J/3

1 3

2J27 J/3

C520.1U

MA0

MA9

C490.1U

C500.1U

C120.1U

C130.1U

C160.1U

A2A3A4A5A6A7A8A9

DR5DR6DR7DR8DR9DR10DR11DR12DR13DR14DR15DR16DR17DR18DR19DR20DR21DR22DR23DR24DR25DR26DR27DR28DR29DR30DR31

LED1

LED

LED2

LEDC41

0.1U

R67

330

R68

330

DT1FB1L3N

DT2FB1L3N

D 12

CP 11Q 9

Q 8

S

10

R

13

IC10B

74F74

D 2

CP 3Q 5

Q 6

S

4

R

1

IC10A

74F74

DB0

DB1

Yellow

Red

J16 PJ

R44 68R45 68

EPRDYXCPRDYX

PRRDYXPRINTX

ETBSYXCTBSYXSRCLKX

CMDXSTSX

TODXHSYNCX

VIDEOXRESETX

EnginController

DF11-20DP-2DSA

J5 PJ

J6 PJ

J7 PJ

J8 PJ

J9 PJJ10 PJ

J24J

R1

10K

SW2

PB

VCC 8

GND 5

CS 1SK 2DI 3DO 4ORG 6NC 7

IC11

AT93C46

C420.1U

R6647K

IC10-7IC10-14

C241U/50V

R7 68

R9 68

1 3 2 FL1

TH09502NAVCC 4

GND 2

OUT 3N.C. 1

CR1

67.15472MHz

C380.1U

R46

68

BL2

N2012Z121

J31 PJ

C230.1U

A0 17A1 18A2 19A3 20A4 23A5 24A6 25A7 26A8 27A9 28

RAS 14LCAS 31UCAS 30WE 13OE 29

VCC 1VCC 6VCC 21

VSS 22VSS 37VSS 42


N.C. 11N.C. 12N.C. 15N.C. 16N.C. 32

IC19

DRAM16M*16/SOJ

A0 17A1 18A2 19A3 20A4 23A5 24A6 25A7 26A8 27A9 28

RAS 14LCAS 31UCAS 30WE 13OE 29

VCC 1VCC 6VCC 21

VSS 22VSS 37VSS 42


N.C. 11N.C. 12N.C. 15N.C. 16N.C. 32

IC20

DRAM16M*16/SOJ

MA1MA2MA3

MA4MA5MA6MA7MA8

MA1MA2MA3


DR16DR17DR18DR19DR20

MA0

C200.1U

C210.1U

A0 16A1 17A2 18A3 19A4 22A5 23A6 24A7 25A8 26

RAS 14LCAS 29UCAS 28

WE 13OE 27

VCC 1VCC 6VCC 20

VSS 21VSS 35VSS 40


NC 11NC 12NC 15NC 30

IC18

DRAM4M*16/SOJ

MA0MA1MA2MA3MA4MA5MA6MA7MA8

DR12DR13DR14DR15


C8

0.1U


D0 13D1 14D2 15D3 17D4 18D5 19D6 20D7 21

CE 22OE 24

VPP 1

VDD 32

GND 16

IC15

EPROM 4M*8/DIP

A8A9A10A11A12A13A14A15A16A17A18A19

A2A3A4A5A6A7A8A9A10A11A12A13A14A15A16A17A18

DR14DR15


A20

A2A3A4A5A6A7A8A9A10A11

DR3DR4DR5DR6DR7DR8DR9DR10DR11DR12DR13DR14DR15DR16DR17DR18DR19DR20DR21DR22DR23DR24DR25DR26DR27DR28DR29DR30DR31

A27

IRL0IRL1IRL2IRL3

CSX0CSX1CSX2CSX3CSX4CSX5

R75 68

R76 68

R77 68

R78 68

R79 68

R80 68

R81 68

R82 68

R83 68

R84 68

R85 68

R86 68

R87 68

R88 68

R89 68

R90 68

R91 68

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

D15

DR0

DR1

DR2

DR3

DR4

DR5

DR6

DR7

DR8

DR9

DR10

DR11

DR12

DR13

DR14

DR15

KX15-40K2D

CSX0

A12A13A14A15A16A17A18A19A20A21

CSX1

A23A24A25

A22

C30

0.1U

C31

0.1U


D0 13D1 14D2 15D3 17D4 18D5 19D6 20D7 21

CE 22OE 24

VPP 1

VDD 32

GND 16

IC16

EPROM 4M*8/DIP

A19



A20

A20

A0 10A1 9A2 8A3 7A4 6A5 5A6 4A7 3A8 41A9 40A10 39A11 38A12 37A13 36A14 35A15 34A16 33A17 2A18 1NC 42

CE 11OE 13BYTE 32


VDD 22

GND 31GND 12

IC21

MROM8M*16

A0 10A1 9A2 8A3 7A4 6A5 5A6 4A7 3A8 41A9 40A10 39A11 38A12 37A13 36A14 35A15 34A16 33A17 2A18 1NC 42

CE 11OE 13BYTE 32


VDD 22

GND 31GND 12

IC22

MROM8M*16


DR16DR17DR18DR19DR20DR21DR22


A2A3A4A5A6A7A8

A20A21

C22

0.1U

MA4MA5MA6MA7MA8


DR21DR22DR23

J25,J26,J271-2 4M*16 / 2-3 16M*16

NOT USE C52 IN 16M*16.

NOT USE 21,22 PIN IN 4M*16.

R2

10SW1PB

R6

68

1

3

2C18

NFA41R00C470

VCC 7

C 5GND 4

OUT 6

NC 1NC 2NC 3NC 8

IC6

M51953BFP

R171K

C250.1U

1 3 2 FL2

TH09502NA

R33

68

D 12

CP 11Q 9

Q 8

S

10

R

13

IC8B

74F74

C390.1U

BL1 2012Z601

C460.1U

+5 14

GND 7

IC8

VCC_GND

VCC 4

GND 2

OUT 3N.C. 1

CR2

45.0000MHz

Patern Only

C1

1U/50V

R1010K

R3210K

R7210K


GND 41GND 42GND 43GND 44

RESET 45INH 46CMREQ 47WRRDY 48RDREQ 49WRT 50RDT 51TYPB 52

TXD 53READY 54RXD 55

NC 56

DB0 7DB1 8DB2 9DB3 10DB4 11DB5 12DB6 13DB7 14

AB0 15AB1 16AB2 17AB3 18AB4 19

CS 20RD 21WR 22

NMI 24IREQ 23DREQ 25PCLK 1DTCT 26RST 2

TXD+ 31TXD- 32RXD+ 33RXD- 34DTR 35CTS 36

NC 37NC 38LCD 39SWRD 40


GND 3GND 4GND 5GND 6

CN4

IOBUS/OPTIF

R50 3.3KR51 3.3KR52 3.3K

DB0DB1DB2DB3DB4DB5DB6DB7

AB0AB1AB2AB3AB4

CUT THE FOLLOWS LINES IN MP BOARD.

*

J28,29,30,31,32 ARE "CUT LAND PATTERN".


DR23A9A10A11A12A13A14A15A16A17A18A19A20A21

52819-0801

R92 68

R93 68

R94 68

R95 68

R96 68

R97 68

R98 68

R99 68

R100 68

R101 68

R102 68

R103 68

R104 68

R105 68

R106 68

D16

D17

D18

D19

D20

D21

D22

D23

D24

D25

D26

D27

D28

D29

D30

D31

DR16

DR17

DR18

DR19

DR20

DR21

DR22

DR23

DR24

DR25

DR26

DR27

DR28

DR29

DR30

DR31

DR[0..31]

CSX2CSX3

D0

2

D1

4

D2

6

D3

8

D4

20

D5

22

D6

24

D7

26

D8

49

D9

51

D10

53

D11

55

D12

57

D13

61

D14

63

D15

65

D16

3

D17

5

D18

7

D19

9

D20

21

D21

23

D22

25

D23

27

D24

50

D25

52

D26

54

D27

56

D28

58

D29

60

D30

62

D31

64

A0

12

A1

13

A2

14

A3

15

A4

16

A5

17

A6

18

A7

28

A8

31

A9

32

A10

19

A11

40

A12

43

A13

41

A14

42

A15

71

A16

66

A17

48

A18

46

A19

29

A20

33

A21

36

A22

37

A23

38

CS0

44

CS1

45

EEP

34

RD

11

WR

47

RESET

35

VCC

10

VCC

30

VCC

59

VSS

1

VSS

39

VSS

72

R/B

67

NC

68

NC

69

NC

70

CN5ROM_SIMM

A19

A20

A21

A22

A23

A24

A25

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

A15

A16

A17

A18

DR0

DR1

DR2

DR3

DR4

DR5

DR6

DR7

DR8

DR9

DR10

DR11

DR12

DR13

DR14

DR15

DR16

DR17

DR18

DR19

DR20

DR21

DR22

DR23

DR24

DR25

DR26

DR27

DR28

DR29

DR30

DR31

1. IC1---126,127,129,116 PIN2. IC3---49 PIN

Figure A-3. C169 MAIN-B Circuit Diagram (1/2)


Rev. A A-11

TO

DX

VID

EO

XH

SY

NC

X

R2

12

2.2

KR

20

82

.2K

1

2

3

4

8

7

6

5

RM

20

13

.3K

R2

11

10K

P5

4/C

NT

R0

15

P7

2/S

CL

K2

9

P5

3/IN

T4

16

P7

1/S

OU

T2

10

P70

/SIN

2 1

1

P00

56

P86

/RT

P4

66

P5

6/D

A1

13

P5

7/D

A2

12

P60

/AN

5

3

P81

/DA

4 7

1

P76

/AN

3

5

P04

52

P7

5/A

N2

6

P6

3/A

N9

/AM

P+

78

P6

4/A

N1

0/A

MP

- 7

7

P3

7 5

7

P77

/AN

4

4

AM

PO

UT

79

P02

54

XIN

30

XO

UT

31

P8

2/R

TP

0 7

0

P8

3/R

TP

1 6

9

P8

4/R

TP

2 6

8

P8

5/R

TP

3 6

7

P0

1 5

5

P0

3 5

3

P0

7 4

9

P2

2 3

8

P2

4 3

6

P3

6 5

8

P4

0 2

9

P4

1 2

8

P4

3/IN

T1

24

P4

7/S

RD

71

20

P5

0/T

OU

T 1

9

P5

1/I

NT

2 1

8

P5

2/I

NT

3 1

7

P6

2/A

N7

1

P8

7/R

TP

5 6

5

P3

36

1

P3

0/R

TP

66

4

P3

1/R

TP

76

3

P3

26

2

P4

2/IN

T0

25

P2

04

0

P21

39

P23

37

P4

6/S

CL

K1

21

P45

/TX

D2

2

P44

/RX

D2

3

RE

SE

T2

7

P1

54

3

P3

46

0

P1

64

2

P1

44

4

P13

45

P10

48

P1

14

7

P1

24

6

P3

55

9

P25

35

P26

34

P27

33

P80

/DA

37

2

P73

8

P0

55

1

P0

65

0

P5

5/C

NT

R1

14

P6

1/A

N6

2

P7

4 7

P1

74

1

VC

C7

3

AM

PV

CC

80

AD

VR

EF

74

P6

5/A

N1

1/D

AV

RE

F7

6

VS

S3

2

AV

SS

75

CN

AV

SS

26

IC2

01

M3

80

7X

R2

072

.2K

C2

39

0.0

1U

+5

V 7

SS

CA

N 1

LD

AT

A 6

LD

AP

C1

4

LD

AP

C2

3

LD

_C

TL

2

GN

D1

5

CN

20

5

11

12

13

IC2

02D

74

HC

02

R2

06

33

R2

54

1K

R2

53

68

0

C2

53

47

00

P

C2

58

0.1

U

8 9 1

0

IC2

02C

74

HC

02

C2

52

10

00

P

R2

96

10

K

R2

91

10

K

TP

20

4T

P

VC

C 7

C 5

GN

D 4

OU

T

6

NC

1

NC

2

NC

3

NC

8

IC2

51

M5

19

53A

FP

C2

57

0.1

UC

20

7

10

P

EP

RD

YX

PR

RD

YX

ET

BS

YX

SR

CL

KX

STS

XC

MD

X

CT

BS

YX

CP

RD

YX

RE

SE

TX

PR

INT

X

PS

3

1

PS

3

3

GN

D

2

CN

20

8

+2

4V

5

NC

4

PS

1

1

PS

1

3

FE

ED

1

6

GN

D1

2

CN

20

3

C2

40

0.0

1U

1

16

IC2

03

A

ULN

20

03

A

R2

13

22

0 1

/4W

R21

42

20

1/4

W

R21

6

47

K

R2

15

47K

C2

55

0.0

1U

C2

56

0.0

1U

C2

54

0.0

1U

40

0m

A

C2

51

10

00

P

1 3 2

VR

20

11

0K

R21

03

.0K

R2

09

1.0

K

C23

81

00

0P

C23

71

00

0P

C23

61

00

0P

C23

51

00

0P

C2

32

10

00

PC

231

10

00P

C2

30

10

00

P

C22

91

00

0P

C2

59

0.1

U

C2

43

0.1

U

PL

AC

E N

EA

R C

N2

05

PL

AC

E N

EA

R C

N21

0

NC

1

+2

4V

2

+5

V 4

P_

CT

L 5

GN

D2

3

CN

21

0

+5

V 2

TH

1

CN

20

2

TP

202

TP

+2

4V

2

FA

N 1

CN

21

1

C20

6

10

00P

R2

27

6.8

1/4

W

20

0m

A

R20

3

3.0

K 1

.0%

C2

14

10

00

P

DT

20

1

FB

1L

3N

R2

26

47

KR

29

5

10

K

C21

60

.01

U

1

2 3

4

8

7

6

5

RM

20

24

.7K

R23

34

.7K

R23

44

.7K

R2

364

7K

+2

4V

1

+5

V

4

NC

3

PE

2

6

PS

IZ0

7

PS

IZ1

8

PS

IZ2

9

FE

ED

2

2

CH

EC

K1

10

CH

EC

K2

11

CH

EC

K3

12

GN

D1

5

CN

209

C2

41

0.0

1U

C2

271

00

0P

C2

26

100

0P

C2

251

00

0P

7

10

IC2

03

G

UL

N20

03

A

2

15

IC20

3B

UL

N2

00

3A

5

12

IC20

3E

UL

N2

00

3A

3

14

IC20

3C

UL

N2

00

3A

C2

19

10

00

P

C2

20

10

00

P4

00

mA

C2

17

10

00

P

C2

18

10

00

P

C2

05

22P

CR

20

18

MH

z

C2

04

22

P

2 3

1

IC2

02

A

74

HC

02

5 6

4

IC2

02

B

74

HC

02

R2

93

10K

IC2

02-

14

4 1

3

IC2

03

D

UL

N20

03

A

C2

03

0.1

U

TP

20

3

TP

TP

20

1

TP

IC2

02-

7

C2

01

220

U/1

6V

FU

SE

R 5

+2

4V

1

GN

D2

2

+5

V 4

GN

D1

3

CN

207

A 1

A 2

B 3

B 4

CN

206

1A

R2

19

1K

R2

17

56

K

C2

108

20

P

C2

08

82

0P

R2

24

2.7

1/4

W

R2

21

1 1

/2W

1A

MA

15

MB

1

E 1

6

C 1

0

T

2

PH

8

I0 9

I1 7

VM

M 3

VM

M1

4

VC

C 6

VC

C1

1

GN

D 4

GN

D 5

GN

D1

2

GN

D1

3

IC2

04

TE

A37

18

SD

P

R2

92

10

K

1A

R2

38

10

KR

23

71

0K

R2

04

39

K

R20

56

.8K

TP

20

5T

P

R2

90

10

K

C21

5

0.1

U

6

11

IC2

03

F

ULN

20

03

AD

201

1S

S2

26

R22

3

10

0K

C2

13

0.0

22U

GN

D

8

NC

9

IC2

03

20

03X

C2

33

10

00

P

C22

41

00

0P

C22

31

000

P

C22

21

00

0P

C2

21

10

00

P

C23

4

10

00P

C2

281

00

0P

C2

42

0.1

U

HV

_S

2

4

+2

4V

8

HV

_C

1

HV

_S

3

HV

_T

2

HV

_B

5

BIA

S_

M

6

GN

D2

7

CN

20

4

C20

20

.1U

MA

15

MB

1

E 1

6

C 1

0

T

2

PH

8

I0 9

I1 7

VM

M 3

VM

M1

4

VC

C 6

VC

C1

1

GN

D 4

GN

D 5

GN

D1

2

GN

D1

3

IC2

05

TE

A3

71

8S

DP

C2

124

7U

35

V

1A

R2

201

K

R21

85

6K

C2

11

820

P

C2

09

820

P

R2

25

2.7

1/4

W

R2

22

1 1

/2W

1A

Figure A-4. C169 MAIN-B Circuit Diagram (2/2)


Rev. A A-13

LN

F16.3A, 125V

R1

470K

C1

0.22uF125V

NR

1E

NC

271D

-10

Z7D

271

L1Z0408, Z0462

C3

C4

C3

, C4

2200pF

125V

C2

0.1uF

125V

BD

1D

258A50

D2S

860

Th1100-g,M

100 10C,

M10007C

NTH

9D100LA

C19

0.01u250V

R24

100K0.5W

D4

EU

2A, A

GIC

ER

A22-06

R4

220K-180K

0.25W

R5

390K

0.25W

Q1

2SK

1445

2SK

1446

R7

4.7

C5

2200pF125V

+

C5

330u

F2

00V

C8

680p

1kV

500V

R5

222W

L10

ZD

2H

ZS

15

R11

68K

Q2

D1207

C1213

C1815

PC

1P

C81

7

C9

0.0

1uF5

0V

R8

6800.5W

R9

10K

ZD1

HZS

18-20

R10

22K

R25

18K

C10

4700p

F50

V

T1

Z04

96

D2

YG

901C2

D5LC

20U

D3

YG

801C4

D5S

C4M

FMB

-24M

+C

173300uF10V

++

C15

1000uF35V

C1

6100

0uF35V

R27

1.2K0.5W

R19

1.2K0.5W

R20

1.2K0.5W

R26

1.2K0.5W

L9

L7Z0

400

SC

R1

TF3215

2P4M

ZD4

HZS

27Z

D3

HZ

S6

R29

33R

3033C

21 1uF, 50V

R22

1000.5W

34 2 15

SW

2A

M51662A

531

CN

1

+24V

+24V G

ND

+5V G

ND

+5.1V

H.L

R12

1K0.25W

R21

0.25W

PC

2S

21M

D4

VS

21M

E4F

D1

ER

AG

1-21

1S

S8

1R

283

3

R12

1.2K

C14

0.0

47uF

50V

R1

433

0

PC

1P

C917

IC1

L5431TL431uP

C1093

HA

17431

C1

30.1uF50V

R1

547K

VR

11K

R15

1.8K

C7

0.1uF125

VL11

Z0

068

TRC

TM8415

SM

8GZ47

R2

4.7R3

33

13

CN

353259-0320

NL

Figure A-5. PWB-E (120 V) Circuit Diagram


A-14 Rev. A

+

5

1 2 3

N.

HE

AT

ER

36

0W

L.

1 2 3

N.

HE

AT

ER

36

0W

L.

CN

2

INL1

SW

1W

H1

WH

2

F1

25

0V

5A

C1

25

0V

0.3

3u

F

VS

14

70V

L1

CM

102

L2

CM

102

R1

1/4

W4

70

K

R2

1/4

W4

70

K

C2

250

V2

200

pF

C3

250

V2

200

pF

C4

25

0V

0.1

uF

RC

16

00V

, 1.5

AR

T1

10

C7

40

0V8

2uF

RC

51

20

0V

10

A

RC

512

00V

10

A

+

+

- +

1 2 4 3

ZC

VS

24

70

V

C2

12

50

V0

.1u

F

TH

16

00V

5A

C2

20

.01

uF

R2

11

/2W

1K

R2

21

/2W

33

PI6

1

61

42

R6

91

W1

.2K

CN

1

FU

SE

R L

AM

P

+2

4V

GN

D(+

24

V)

+5

.1V

GN

D(+

5.1

V)

R3

1/2

W4

70

K

R4

1/2

W4

70K

C9

1K

V1

00p

F

R6

2W

10

0

Q1

80

0V

3A

R1

24

.7K

1/4

W

R5

3W

10

0K

D1

800

1A

C8

63

0V

0.0

1u

F

T1

TM

19

9

D2

70V

0.1

5A

C1

00

.03

3u

F

Q2

50

V2

A

VR

12

00

C1

10

.04

7uF

R7

2W

16

R8

2W

16

R9

2W

16

R10

39

0

D3

2.0

-2.2

V

R1

11

00

D4

70

V0

.15

A

+

+

C62

35

V2

20

0u

FR

632

W1

.2K

R6

42

W1

.2K

SW

61

L62

CL

086

C6

41

0V

22

00

uF

+

C65

50

V1

0u

F

R7

3W

IRE

, PE

S

R6

63

W3

3

PI5

1

5 4

1 2

M5

1

R51

100

R5

21

K

C51

4.7

uF

R6

31

.58

K1

%

R5

41

.47

K1

%

D62

28

.2-

29

.6V

D6

14

.7-

4.9

V

D6

37

0V

0.1

5A

D64

70

V0

.15

A

TH

61

40

0V

5A

C6

14

.7u

F

R6

24

7

R6

11

K

R7

02

21

/4WD

651

9.5

-20

.4V

M6

1

7

8

4

6 5

C66

0.1

uF

R71

10

0

R7

23

.9K

Figure A-6. PWB-E (220/240 V) Circuit Diagram


Rev. A A-15

A.3 CIRCUIT BOARD COMPONENT LAYOUT

Figure A-7. C169 MAIN-B Component Layout (Front)


A-16 Rev. A

Figure A-8. C169 MAIN-B Component Layout (Rear)


Rev. A A-17

EPSON OVERSEAS MARKETING LOCATIONS

EPSON AMERICA, INC EPSON DEUTCHLAND GmBH20770 Madrona Avenue, Zülipicher Straße 6, 40549 DüsseldorfP.O. Box 2842 GermanyTorrance, CA 90509-2842 Phone: 0211-56030Phone: (800) 922-8911 Fax: 0211-504-7787Fax: (310) 782-5220

EPSON UK LTD. EPSON FRANCE S.A.Campus 100, Maylands Avenue, 68 bis, rue Marjolin 92300,Hemel Hempstead, Herts, Levallois-Perret, FranceHP2 7TJ, U.K. Phone: 02-262331Phone: 1442-61144 Fax: 02-2440750Fax: 1442-227227

EPSON IBERICA EPSON ITALIA S.p.A.Avda. de Roma, 18-26 V. le F. lli Casiraghi, 42708290 Cerdanyola del Valles 20099 Sesto S. Giovanni MI, ItalyBarcelona, Spain Phone: 02-262331Phone: 582.15.00 Fax: 02-2440750Fax: 582.15.55

EPSON AUSTRALIA PTY. LTD. EPSON (SINGAPORE) PTE, LTD.1/70 Gibbes Street, No. 1 Raffles Place #26-00Chatswood 2067 NSW, Australia OUB Centre, Singapore 0104Phone: 02-415-9000 Phone: 5330477Fax: 02-417-0077 Fax: 5338119

EPSON HONG KONG LTD. EPSON TAIWAN TECHNOLOGY &20/F, Harbour Centre, TRADING LTD.25 Harbour Road, Wanchai, 10F, No.287 Nonking E. Road, Sec . 3,Hong Kong Taipei, Taiwan, R.O.C.Phone: 585-4600 Phone: 2-717-7360Fax: 827-4346 Fax: 2-712-9164

SEIKOPRINTER80 Harashinden, Hirooka Shiojiri-shi,Nagano-ken, 399-07, JAPANPhone: 0263-52-2552Fax: 0263-54-4007Telex: 3342-214 (SEPSON J)

As of October 1995

epson epl 5500 service manual - diagramasde.com

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