OKI MICROLINE ML3410

MAINTENANCE MANUAL

PREFACEThis maintenance manual describes how to maintain the Microline 3410 printer in the field.

This manual is for customer engineers.

For further information, refer to the User’s Manual for handling or operating the equipment.

TABLE OF CONTENTS

1.

Page

CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-I

1.1 Standard Printer Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 . 1

1.2 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I - 2

2. INSTALLATION PROCEDURE 2 ............................................ 1

2.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -1

2.1.1 Unpacking the Packing Box ................................... 2 - 1

2.1.2 Unpacking the Printer Unit .................................... 2 - 3

2.1.3 Unpacking the Accessories .................................... 2 - 4

2.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 5

2.2.1 Precautions for Installation .................................... 2 - 5

2.2.2 Removing the Shipping Retainer ............................... 2 - 7

2.2.3 Installing the Accessories ..................................... 2 - 7

2.2.4 Connecting Cables ........................................... 2 - 8

2.2.5 Installing Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 9

2.2.6 Powering On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 9.

2.3 Menu Selection .............................................. 2 - 11

2.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -11

2.3.2 Key Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -11

2.3.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 -12

2.3.4 Table of Menu Selections ..................................... 2 - 13

2.3.5 Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1 5

THEORY3.13.1 .I3.1.23.1.2.13.1.2.23.1.2.33.1.2.43.1.2.53.1.2.63.1.2.73.1.2.83.1.2.93.1.2.103.1.2.113.23.2.13.2.23.2.33.2.43.2.53.2.63.2.73.2.8

OF OPERATION .............................................. 3 - 1

Electrical Operation ........................................... 3 - IMain Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 5

Other Circuits ................................................ 3 - 8

Initialize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 -8

Interface control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 9

Communication procedure flow charts ......................... 3 - 12Printing operation ............................................ 3 - 14

Printhead control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 -15

Space motor control .......................................... 3 - 17

Line feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 -18

Bail open/close ............................................... 3 - 18Alarm circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 -19

Sheet insertion guide (SIG) .................................... 3 - 20

Power supply circuit ....................................., .... 3 - 21

Mechanical Operation ........................................ 3 - 22

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 -22Printing Mechanism .......................................... 3 - 22

Printhead Mechanism and Operation .......................... 3 - 23

Spacing Mechanism and Operation ............................ 3 - 24

Ribbon Feed Mechanism and Operation ........................ 3 - 25

Head Gap Adjusting Mechanism and Operation ................ 3 - 26Paper Feed Mechanism and Operation ......................... 3 - 27

Paper End Detection Mechanism .............................. 3 - 32

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4.

5.

6.

7.

Page

ASSEMBLY/DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-I4.1 Precautions for Parts Replacement ............................. 4 - 1

4.2 Service Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2

4.3 Disassembly/Reassembly of Procedure ......................... 4 - 3

4.3.1 Ribbon Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4- 5

4.3.2 Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 6

4.3.3 Ribbon Protector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4- 7

4.3.4 Upper Cover Assembly ....................................... 4 - 8

4.3.5 Operator Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 9

4.3.6 Interface Connector Board .................................... 4 - IO

4.3.7 Control Board (CBNP) and Interlock Switch Assembly ........... 4 - 11

4.3.8 Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1 3

4.3.9 Platen Assembly .............................................. 4 - 14

4.3.10 Line Feed Motor Assembly .................................... 4 - 15

4.3.11 Head Cable Assembly ......................................... 4 - 16

4.3.12 Sensor Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1 8

4.3.13 Ribbon Feed Assembly ........................................ 4 - 19

4.3.14 Space Motor Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2 0

4.3.15 Space Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2 2

4.3.16 Bail Motor Assembly .......................................... 4 - 23

4.3.17 Paper Bail Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2 4

4.3.18 Push Tractor Assembly and Rerease Lever ...................... 4 - 25

4.3.19 Cooling Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 2 7

4.3.20 Power Supply Unit ........................................... 4 - 28

ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 -1

5.1 Gap Between Platen and Printhead ............................ 5 - 1

5.2 Bail Motor Gear Backlash ..................................... 5 - 2

5.3 Ribbon Drive Bevel Gear Backlash ............................. 5 - 3

5.4 Line Feed Belt Tension ........................................ 5 - 4

CLEANING AND LUBRICATION ........................................ 6 - 1

6.1 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - l

6.2 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6- 3

TROUBLESHOOTING AND REPAIR ...................................... 7 - 1

7.1 Items to Check Before Repair ................................. 7 - 1

7.2 Troubleshooting Table ........................................ 7 - 1

7.3 Lamp Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 2

7.4 Parts Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 4

7.5 Connection Circuit and Resistance Check for Printhead andLFlSPlRBN Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7- 5

7.6 Troubleshooting Flow Chart ................................... 7 - 8

7.7 Connection Diagram .......................................... 7 -23

APPENDIXA. PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-l

B. SIGNAL LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B -1

C. CIRCUIT DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C - l

D. SPARE PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D -1

E. BOTTOM PUSH TRACTOR UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E - 1

. . .111

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t

1. CONFIGURATION

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1. CONFIGURATION

1 .l Standard Printer Configuration

ML3410 consists of the following assemblies:

Sheet separitoy&/d

/

Rear cover frame

Access cover assy

AC power IV\

Separator

I

/ ,>Power supply unit

Printer mechanism

Controlboard

Figure l-l Configuration

l-l

1.2 Options

(1) Single bin cut sheet feeder unit (CSF)

(3) Pull-tractor unit

(2) Dual bin cut sheet feeder unit (D Bin CSF)

(4) Bottom push tractor unit with Pull-up roller

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tI

2. INSTALLATION PROCEDURE

2 Installation procedure

2.1 Unpackaging

21.1 Unpacking the packing box

(1)

(2)

Open the packing box.

Remove the two cushioning materials from the left upper and right upper sectionsof the printer unit.

(3)

(4)

(5)

Remove the platen knob from the cushioning materials.

Remove the printer unit.

Remove the ribbon cartridge and the cushioning materials from its right lower andleft lower sections.

(6) Peel the fixing tape off the bottom of the packing box and remove the accessories.

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Cushioning matena(on the left upper sectionof the printer unit)

section

Cushioning material

0 Printer unit

2-2

2.1.2 Unpacking the printer unit

(I) Remove the printer unit from the polyethylene bag.

(2) Peel the fixing tape off the desiccant and the carriage fixing instructions to removethem from the printer unit.

Fixing tape

instructions

Desiccant

Polyethylene bag

\Printer unit

2-3

2.1.3 Unpacking the accessories

(I) Remove the ACcable, and user’s manual from the polyethylene bag.

Ribbon cartridge\

AC code

I

Platen knob

/

manual

2-4

2.2

2.2.1

Installation (For details, refer to the Setup Guide.)

Precautions for installation

When installing the printer, observe the following precautions:

(I) Do not install the printer in the following places:

(2)

(3)

a)b)d4d0g)

Place exposed to direct sunlightPlace with great fluctuations in temperaturePlace exposed to outdoor windDusty placeNear a doorToo near an air conditioner.Place subject to heavy vibrations

Adjust the temperature and humidity of the installation site as follows:Temperature: 50°F to 104OF (5OC to 4OOC)Humidity: 20%RH to 80%RH

To install the printer and printing paper, observe the following procedure:a) Adjust the height of the desk on which to place the printer to 30 inches (75 cm)

as a standard. (See to it that the desk surface is horizontal and smooth and thatthe rubber protectors on the bottom of the desk legs are level.)

b) Set the printing paper on the floor below the printer so that it may be fed intothe printer without skewing from the feeding path by more than 2 inches (5 cm).

2 inches (5 cm) or less I (

2-5

c) Align the rear section of the printer with the rear edge of the desk. Keep a distanceof 24 inches (60 cm) or more between the rear section of the printer unit andthe wall to provide a space for printed paper being fed out.

d) Keep a distance of 4 to 6 inches (IO to 15 cm) or more between the unprintedpaper fed into the printer and the printed paper fed out of the printer. If thepaper going in one direction interferes with the paper going the other way, theymay jam inside the printer.

24 inches (60 cm) or more

Floor

Wall

& 4 to 6 inches (10 to 15 cm)

2-6

2.2.2 Removing the shipping retainer

Remove the shipping retainer that secures the printhead.

-_Printhead

Note: Be sure to replace the shipping retainer whenever you ship your printer. It secures th%printhead in place to protect it.

2.2.3 Installing the accessories

Install the following accessories removed from the unpacked packing box on the printerunit:

(1) Platen knob(2) Ribbon cartridge

Platen

cartridge

knob

2-7

2.2.4 Connecting cables

(1) Connect the AC cable to the printer.(2) Connect the interface cable to the printer.

AC cable(Rear section of printer)

To host computer

Connecting RS-232C Connecting Centronicsserial interface cable parallel interface cable

Shill Ihe blind palchlo Ihe righl.

Blind palch fixing

Shill Ihe bli;;dpalch lo Ihe Ml.

Note: Unit is shipped with the Parallel Port exposed. No bracket adjustment is necessary unless usingM-232.

2-8

2.2.5 Installing paper

Install printing paper on the printer for the test run.

2.2.6 Powering on

(I) Turn on the POWER switch on the right side of the printer unit.(2) Confirm that the POWER LED is on and that the printhead returns to its home (left

most) position.

(3) If the printer unit shows no abnormality after it is powered on, proceed to the nextstep (4) for test printing.

2-9

(4) Test orinting4

b)

Aker coifirming that the POWER switch is off,turn it on while pressing the FORMFEED switch.

cl4

Confirm that the printer unit prints out the test pattern as shown in the figurebelow.Press the SELECT switch to end the printing test.Confirm that the SELECT lamp is on, indicating that the printer unit is ready toreceive printing data from the host computer.

1”#$5&‘()*+,-. /0123456789~;<->?@ABC----C'()*+,-./0123456789~t<->?@ABCDEFGHI"#$%&'()'+,-./0123456789:;<->?@ABCD '()a+,-. /0123456789r;<=>?@A8CDEFGHI"#St&'()*+,-. /0123456789:;<->?@ABCDE o*+,-. /01234567891;<->?@ABCDEFGHIJ#$%&'()*+,-./0123456789:;<-s?@ABCDEF )*+,-. /01234567891;<->?@ABCDEtFGHIJKStC'()*+,-. /0123456789r;<->?@ABCDEFG *+,-. /01234567891;<->?@ABCDEFGHIJKLt&'()*+,-. /0123456789:;<->?@ABCDEFGH +,-. /01234567891;<->?@ABCDEFGHIJKLH&'()*+,-. /0123456789r;<->?@ABCDEFGHI ,-e/0123456789:;<->?@ABCDEFGHIJKLtJN'()*+,-. /01234567891;<->?@ABCDEFGHIJ -./0123456789:;<->?@ABCDEFGHIJKLHNOo*+r-. /0123456789r;<=>?@ABCDEFGHIJK . /01234567898;<->?@ABCDEFGHIJKLHNOP) l +,-. /0123456789:;<->?@ABCDEFGHIJKL /0123456789:;<->?@ABCDEFGHIJKLHNOPQl +,-. /0123456789r;<->?@ABCDEFGHIJKLH 0123456709:;<->?@ABCDEFGHIJKLHNOPQR+,-./01234567891;<->?@ABCDEFGHIJKLttN 1234567891;<->?@ABCdEFGHIJKLHNOPQRS,-./0123456789:;~=>7@ABCDEFGHIJKLMNO 234567891j<=>?@ABCDEFGHIJKLMNOPQRST-./0123456789:;<->?@ABCDEFGHIJKLMNOP 34567891;<->?@ABCDEFGHIJKLttNOPQRSTU. /0123456789:;~=>?@ABCDEFGHIJKLtiNOPQ 456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUV/0123456789~;<=>?@ABCDEFGHIJKLHNOPQR 56789r;<=>?@ABCDEFGHIJKLtiNOPQRSTUVW0123456789~,<=>?@ABCDEFGHIJKLtiNOPQRS 67891;<->?@ABCDEFGHIJKLttNOPQRSTUVWX123456789:;<->?@ABCDEFGHIJKLMNOPQRST 789t;<->?@ABCDEFGHIJKLttNOPQRSTUVWXY23456789;;<=>?@ABCDEFGHIJKLttNOPQRSTU 89rt<->?@ABCDEFGHIJKLtdNOPQRSTUVWXYZ3456789:;<->?@ABCDEFGtiIJKLt4NOPQRSTUV ----YI;<->?@ABCDEFGHIJKLHNOPQRSTUVWXYZ[

1 II

2-10

2.3 MENU SELECTION

2.3.1 OVERVIEW:

Access “global” type printer features/functions as directly as possible. Features selected in MENUmode become the default features for the printer each time it is powered on. The Menu functionallows the ability to activate features without the use of software commands. Software commandswill override MENU settings.

2.3.2 KEY FUNCTIONS:

ITEM

SET

Key Name

GROUP

Function

General categorization of functions/features.Selects next GROUP title, once through the entire list, loopsback to the first GROUP.

Direct name of functions/features.Selects next ITEM title, once through the entire list, loopsback to the first ITEM in the current GROUP.

PRINT

EXIT

Value (setting) of the ITEM.Selects next SETTING value, once through the entire list,loops back to the beginning of the list.

Prints entire MENU and returns to top of MENU list.

Saves any changed settings and leaves the MENU.

2-11

2.3.3 OPERATION

1. To enter Menu mode depress PQ and CPI switch.

a. Printer = deselected state. SEL LED = off

b. Press GROUP switch to print first MENU item.

2. Upon entering Menu mode, the first GROUP - ITEM - SET is printed.

3. See Key functions above for description of operation.

4. To exit MENU mode depress the EXIT switch.

5. If conflicting functions are set in menu mode, the printer will treat these functionaccording to the priority table.

6. The TOF position is not affected by MENU mode.

7. Depressing TOF/SEL switches simultaneously on power up will reset the menu backto its factory settings. (see FACTORY SETTINGS for further details.)

Note: When entering/exiting Menu mode, the user is not prompted.

2-12

2.3.4 TABLE OF MENU SELECTIONS

NOTE: Factory settings are bold printed.

Group Item Setting

Printer Mode

Font

Emulation Mode

Print ModePitch

Symbol Sets

StyleSize

Character Set

Language Set

Zero CharacterSlash Letter 0Code Page

Rear Feed Line Spacing 6 LPI, 8 LPIForm Tear Off Off, 500 ms, 1 set, 2 set

IBM PPR, EPSON FX

Utility, NLQ Courier, NLQ Gothic, HSD10 CPI, 12 CPI, 15 CPI, 17.1 CPI, 20 CPIProportionalNormal, ItalicsSingle, Double

Set II, Set I

American(F), French, German, British, Danish I,Swedish I, Italian, Spanish I, Japanese,Norwegian, Danish II, Spanish II, LatinAmerican, French Canadian, Dutch, Swedish II,Swedish III, Swedish IV, Turkish, Swiss I,Swiss II, PublisherUnslashed, SlashedNo, YesUSA, Canada-French, Multilingual, Portugal,Norway, Turkey, Greek_437, Greek_851,Greek_928, Cyrillic, Polska Mazovia, Polska PCLatin 2, Serbo Croatic I, Serbo Croatic II,ECMA-94

Skip Over Perforation No, YesPage Width l3.6”, 8”Page Length II”, 11 2/3”, 12”, 14”, 17”, 3”, 3.5”, 4”, 5.5”,

6”, 7”, 8”, 8.5”

Bottom Feed Line Spacing 6 LPI, 8 LPIForm Tear Off Off, 500 ms, I set, 2 setSkip Over Perforation No, YesPage Width l3.6”, 8”Page Length II”, 11 2/3”, 12”, 14”, 17”, 3”, 3.5”, 4”, 5.5”,

6”, 7”, 8”, 8.5”

Top Feed Line Spacing 6 LPI, 8 LPISkip Over Perforation No, YesPage Width 13.6”, 8”Page Length 11 /I, 11 2/3”, 12”, 14”, 17”, 3”, 3.5”, 4”, 5.5”,

6”, 7”, 8”, 8.5”

2-13

Group Item Set (Value) Selection

Set-Up Graphics Bi-directional, Uni-directionalReceive Buffer Size 16K, 28K, 1 Line, 4KPaper Out Override No, YesPrint Registration 0.00 mm, 0.05 mm Left, 0.10 mm Left, 0.15 mm

Left, 0.20 mm Left, 0.25 mm Left, 0.25 mm Right,0.20 mm Right, 0.15 mm Right, 0.10 mm Right,0.05 mm Right

Operator PanelFunction Full Operation, Limited OperationReset Inhibit No, YesPrint SuppressEffective Yes, NoAuto LF No, YesAuto CR (IBM PPROnly) No, YesCSF Bin Select Bin 1, Bin 2SI Select Pitch (IO CPI)(IBM PPR Only)SI Select Pitch (12CPI)(IBM PPR Only)Time Out PrintAuto SelectSensor Disable

Parallel I/F(*l) l-PrimePin 18Auto Feed XT(EPSON FX Only)

Serial I/F (*2) ParitySerial Data 7 or 8 BitsProtocolDiagnostic TestBusy LineBaud Rate

DSR SignalDTR SignalBusy Time

17.1 CPI, 15 CPI

20 CPI, 12 CPIValid, InvalidNo, YesNo, Yes

Buffer Print, Buffer Clear, Invalid+5V, Open

Invalid, Valid

None, Odd, Even8 Bits, 7 BitsReady/Busy(F), X-ON/X-OFFNo, YesSSD-, SSD+, DTR, RTS9600 BPS, 4800 BPS, 2400 BPS, 1200 BPS, 600BPS, 300 BPS, 19200 BPSValid, invalidReady on Power Up, Ready on Select200 ms, 1 set

(*I) or (*2) appeares one of two according to the Interface Selection.

2-14

2.3.5 EXAMPLE: Set Default Font to Courier.(Not printed in full size)

Step Printout

(1) Push PQ and CPI SW. Menu Mode

(2) Push GROUP SW twice. Printer Mode

Font

Emulation Mode

Print Mode

(3) Push SET SW

to set value.Font Print Mode

(4) Push PRINT SW Printer Mode Emulation Modeto print current Menu. Font Print Mode

Font PitchFont StyleFont Size

Symbol SetsSymbol SetsSymbol SetsSymbol SetsSymbol Sets

Character SetLanguage SetZero CharacterSlash Letter 0Code Page

Rear FeedRear FeedRear FeedRear FeedRear Feed

Line SpacingForm Tear-OffSkip Over PerforationPage WidthPage Length

Bottom FeedBottom FeedBottom FeedBottom FeedBottom Feed

Line SpacingForm Tear-OffSkip Over PerforationPage WidthPage Length

Top FeedTop FeedTop FeedTop Feed

Line SpacingSkip Over PerforationPage WidthPage Length

Set-UpSet-UpSet-UpSet-UpSet-UpSet-UpSet-UpSet-UpSet-UpSet-UpSet-UpSet-UpSet-UpSet-UpSet-Up

GraphicsReceive Buffer SizePaper Out OverridePrint RegistrationOperator Panel FunctionReset InhibitPrint Suppress EffectiveAuto LFAuto CRCSF Bin SelectSI Select Pitch (IO CPI)SI Select Pitch (12 CPI)Time Out PrintAuto SelectSensor Disable

IBM PPR

Utility

NLQ Courier

IBM PPRNLQ Courier10 CPINormalSingle

Set IAmericanSlashedNoUSA

6 LPIOffNo13.6”11 ”

6 LPIOffNo13.6”11 ”

6 LPINo8 ”11 ”

Bi-directional16KNo0.00 mmFull OperationNoYesNoNoBin 117.1 CPI20 CPIValidNoNo

2-15

Step Printout

Serial I/F ParitySerial I/F Serial Data 7 or 8 BitsSerial I/F ProtocolSerial I/F Diagnostic TestSerial I/F Busy LineSerial I/F Baud RateSerial I/F DSR SignalSerial I/F DTR SignalSerial I/F Busy Time

(5) Push EXIT to exit MENU Menu Endand return to Print mode.

None8 BitsReady/BusyNoSSD-9600 BPSValidReady on Power Up200 mS

2-16

I

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3. THEORY OF OPERATION

3. THEORY OF OPERATION

3.1 Electrical Operation

(1) Main control board

Microprocessor (MPU) controls the whole printer via the peripheral LSls, memory andother circuits.

Interface circuits and various motor driver circuits are also mounted on this board.

(2) Power supply unit

The power supply unit converts the AC input to +5 VDC, +38 VDC and +8 VDC.

3-l