Technicon RA-50 System

TECHNICAL SERVICE MANUAL

PUBLICATION NO. TF9-4847-00 / MARCH 1994

COMPANY CONFIDENTIAL THE INFORMATION CONTAINED HEREIN IS PROPRIETARY TO BAYER DIAGNOSTICS MANUFACTURING LIMITED AND IS CLASSIFIED COMPANY CONFIDENTIAL. IT IS FURNISHED TO FIELD SERVICE ENGINEERS FOR MAINTENANCE AND OVERHAUL OF THE SUBJECT EQUIPMENT ONLY. IT SHALL NOT BE DISCLOSED, DUPLICATED, OR USED IN WHOLE OR IN PART FOR ANY OTHER PURPOSE WITHOUT THE PRIOR WRITTEN PERMISSION OF BAYER DIAGNOSTICS MANUFACTURING LIMITED, DUBLIN, IRELAND.

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PUBLICATION CHANGE RECORD

Publication No. Date Publication No. Date TF9-4847-00 March 1994

LIST OF EFFECTIVE PAGES

Page No. Date Page No. Date A March 1994 B/C March 1994 1-i March 1994 1-1 through 1-4 March 1994 2-i and 2-ii March 1994 2-1 through 2-24 March 1994 3-1 March 1994 4-i March 1994 4-1 through 4-13 March 1994 5-1 March 1994 6-1 March 1994 7-i March 1994 7-1 through 7-4i March 1994 8-i March 1994 8-1 through 8-3 March 1994 9-i March 1994 9-1 through 9-26 March 1994 10-i March 1994 10-1 through 10-6 March 1994 11-i March 1994 11-1 through 11-23 March 1994

A

TABLE OF CONTENTS Chapter Title Page

INTRODUCTION ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... ii 1 SYSTEM DESCRIPTION................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 1-i 2 OPERATING PROCEDURES.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 2-i 3 METHODS........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 3-1 4 THEORY OF OPERATION.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 4-i 5 INSTALLATION AND CHECKOUT ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 5-1 6 EXERCISER TESTS........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 6-1 7 ALIGNMENTS AND ADJUSTMENTS ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 7-i 8 PREVENTIVE MAINTENANCE...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 8-i 9 REPAIR AND REPLACEMENT................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 9-i 10 TROUBLESHOOTING ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 10-i 11 DIAGRAMS ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 11-i

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INTRODUCTION Documentation to support the RA-50 system consists of the following manuals:

RA-50 System Technical Service Manual (Technical Publication No. TF9-4847-0) RA-50 System Worksheets Manual (Technical Publication No. TK9-4847-00) RA-50 Chemistry Analyzer Operator's Manual

This service manual is intended for use in the classroom and for servicing systems in the field. ORGANIZATION OF THE MANUAL Chapter 1 - Description of the RA-50 System: provides a general description of the system and system specifications. Chapter 2 - Operating Procedures: provides system startup flowcharts, brief routine operating procedures, and procedures for calibrating, and running controls. Chapter 3 - Methods: Typically, Chapter 3 of a Technical Service Manual provides a brief description of the standard methods used on the system. In the case of the RA-50 system, however, this information is provided in the RA-50 System Worksheets Manual (Technical Publication No. TK9-4847-00) Chapter 4 - Theory of Operation: provides detailed descriptions of the spectrophotometer, electo/mechanical assemblies, hydraulic devices and printed circuit boards. Each section contains functional diagrams and tables that can be used to locate electronic and hardware problems when troubleshooting. Chapter 5 - Installation: Typically, Chapter 5 of a Technical Service Manual provides site survey requirements, installation procedures, installation checkout procedures, and system acceptance test. In the case of the RA-50 system, however, this information is provided in Section 2 of the RA-50 Chemistry Analyzer Operator's Manual. Chapter 6 - Exerciser Tests: Typically, Chapter 6 of a Technical Service Manual provides procedures for using the exerciser tests. The RA-50 system, however, is not equipped with an exerciser. Chapter 7 - Alignments and Adjustments: provides procedures for aligning the electro/mechanical assemblies. Chapter 8 - Preventive Maintenance: provides procedures for maintaining optical, hydraulic, and electro/mechanical devices. Chapter 9 - Repair and Replacement: provides procedures for disassembly and replacement of specific subassemblies. Chapter 10 - Troubleshooting Procedures and Error Messages: provides troubleshooting tables and error message definitions. Chapter 11 - Schematic and Interconnect Diagrams: provides interconnect and schematic diagrams.

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CHAPTER 1 SYSTEM DESCRIPTION

TABLE OF CONTENTS

Section Title Page 1A GENERAL.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 1-1

1A1 Instrument Description......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 1-1 1B ANALYZER ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 1-2 1C SPECIFICATIONS............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 1-2 1D WARNINGS FOR USE OF THE FLOWCELL.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 1-3

1D1 Urea.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 1-3 1D2 LD............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 1-3

1E SAFETY NOTES.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 1-3

LIST OF ILLUSTRATIONS Figure Title Page 1A-1 RA-50 System........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 1-1

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CHAPTER 1 - SYSTEM DESCRIPTION 1A GENERAL The RA-50 system (Figure 1A-1) is a programmable chemistry analyzer capable of providing quantitative results for 107 different tests in the following categories:

Substrate Electrolyte Plasma Proteins Hormones Enzyme TDA Coagulation

The system consists of the RA-50 Chemistry Analyzer with a plug-in program module and appropriate SERA-PAK and Technicon RA system diagnostics reagents. The RA-50 system is programmable for routine or special methods:

Endpoint Kinetic Bichromatic Fixed Time Multicalibration Absorbance

Figure 1A-1 RA-50 SYSTEM 1A1 Instrument Description The RA-50 system utilizes two microprocessors and an optical system to obtain accurate and precise test results. Data output is provided via a 4-line (20 characters each line) display, an internal high performance 40-column thermal tape printer, and a RS-232-C interface for host computer connection.

1-1

1B ANALYZER The Analyzer allows for two sample handling techniques; flowcell system or disposable cuvette. Both cuvette types are peltier temperature regulated at 25, 30, or 37, independent of ambient temperature. A long-life halogen lamp is used as a light source. A condenser with an aperture and a mirror convert the light to parallel light energy. The light energy passes through the sample cuvette, through one of seven interference filters, and then onto a photo element with a high sensitivity in the UV range. An amplifier transforms the current produced by the photo element into voltage. A 12-bit A/D converter converts the processed analog signals into digital signals. The two microprocessors perform the mathematical processing, and the results are displayed on the LCD screen and printed by the thermal printer. Comments and/or messages also are displayed and printed. 1C SPECIFICATIONS Power Requirement Factory set for: 220 Vac (+10% to -15%), 50-60 Hz

Protection class I, with optional settings of 100, 120, and 240 Vac

Power Cord Complies with European IEC Standard; verify this meets local area requirements

Extension Cords Not supplied; use only 3-prong adapters and 3-wire electrical outlets. Do not remove or bypass the ground wire (Protection Class I, green/yellow wire)

Power Consumption Maximum 100 watts

VDE, UL Approval Radio protection according to VDE 0871, class B TUV GS safety mark, according to VDE 0411/2.80; UL 1262 in preparation

Dimensions Height: 6.1 inches (155 mm) Width: 15.5 inches (395mm) Depth: 14.5 inches (370 mm)

Weight 13.5 Ib. (6.2 kg)

Light Source Halogen Lamp, 6 V/10 W, preadjusted long-life (2000 h)

Storage Conditions -20 to +50; maximum 85% R.H. at 30 Operating Conditions 15 to 32; maximum 85% R.H. at 30 Display Type Alphanumeric liquid crystal display; 4 lines, 20 characters each; 5 x 7

dot matrix, character size 3/16 x 5/16 inches (5x8 mm)

Printer Type Thermal Printer, paper width 4.5 inches (116 mm); 3/8 x 1/4 inches (9x7 mm) dot matrix, 40 columns; 31 characters per second

Microprocessor Main processor 16-bit; Coprocessor 8-bit

Memory Software: Plug-in module (4 EPROMS of 64 kByte each), user exchangeable for updating and expansion

Data Storage: 64 kB NV RAM; 2 x 50 QC results / 50 tests; 50 sample blanks /16 tests; test counter, calibration

Interface Serial standard interface RS-232-C

Measuring Range 0 to 2.5000 A

Resolution 0.0001 A

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Photometric Accuracy < 0.005 A from 0 A to 0.500 A

< 1.0% from 0.501 A to 2.500 A Photometric Precision < 0.003 A from 0 A to 0.600 A

< 0.5% from 0.601 A to 2.500 A Drift 0.003 A per 30 min.

Wavelength Range High precision interference filters in a 7-position filter rotor 340, 405, 500, 546, 578, 620, and 670 nm (each 1 nm)

Band Pass UV range (340 nm) = 10 nm; Visible range (405 - 670 nm)

9. When the Analyzer is open and in the power-on mode, do not perform maintenance procedures, change parts, or make repairs or adjustments. In a circumstance where this work must be done, the field engineer must be familiar with the dangers.

10. Only use fuses of the type and current rating specified. Do not use repaired fuses. Do not bypass the fuseholder.

11. If safe operation of the Analyzer can no longer be ensured, set the power switch to OFF and remove the plug from the electrical outlet. Remove power cord and main fuses.

12. Safe operation is no longer guaranteed when the Analyzer:

is visibly damaged is not working has been improperly stored for some time has been transported under unfavorable conditions

Due to static sensitive components, special precautions should be taken when gaining access to components within the Analyzer. Standard CMOS handling precautions should be taken including maintaining same ground potential as system (using wrist strap). When soldering is necessary, a low voltage soldering iron must be used.

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CHAPTER 2 OPERATING PROCEDURES

TABLE OF CONTENTS

Section Title Page 2A INTRODUCTION ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-1 2B SYSTEM STARTUP............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2-1

2B1 Routine Operation........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-1 2C KEYBOARD FUNCTIONS ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-1 2D SYSTEM CONFIGURATION............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2-3

2D1 Basic Setup (General)........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-4 2D1.1 Code 1: Select Cuvette Type ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-4 2D1.2 Code 2: Select Language........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-4 2D1.3 Code 3: Enter Date & Time.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-4 2D1.4 Code 4: Switch Normal Range Check On/Off.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 2-4 2D1.5 Code 5: Aspiration Volume Calibration................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2-5 2D1.6 Code 6: Select RS-232 Communication Conditions............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 2-5 2D1.7 Code 7: Initialize Data Memory....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-6

2D2 Test Units ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-6 2D2.1 Code 10: Select Substrate Test Units............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2-6 2D2.2 Code 11: Select Kinetic Test Units................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-7 2D2.3 Code 12: Select Coagulation Test Units................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 2-7

2D3 Enzyme Kinetic Specific Selections............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 2-7 2D3.1 Code 20: Switch Enzyme Linearity Check On/Off............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-7 2D3.2 Code 21: Switch Enzyme Tests Sample/Substrate Starter.......................................................................................................................................................................................................................................................................................................................................................................................................................... 2-7

2D4 Code 30: Select Measurement Temperature .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 2-7 2D5 Printer Functions.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-8

2D5.1 Code 40: Print Level 2 Test Menu................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-8 2D5.2 Code 41: Switch Printer On/Off.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-8 2D5.3 Code 42: Switch Test Parameter Printing On/Off............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2-8 2D5.4 Code 43: Print List of Analyzed Samples............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2-9

2D6 Select Programming Functionality ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-9 2D6.1 Code 50: Switch Tests Lock/Unlock................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-9 2D6.2 Code 51: Change User Password................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 2-9

2D7 Service Functions..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 2-10 2D7.1 Code 80: Enter Service Password ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 2-10 2D7.2 Code 81: Output Instrument Version Numbers............................................................................................................................................