Table Of Contents - Thermo Scientific GENESYS 20 Service Manual

Table of Contents

Table Of Contents7
List Of Illustrations9
Description11
Genesys 20 Components12
Keyboard Layout13
Specifications15
Installation And Performance Checks17
Thermo Spectronic Field Inspection / Performance Checklist18
Troubleshooting19
Error Messages19
General Troubleshooting Items21
Nothing Works21
Main Board21
Detector Board22
Mono Drive Board22
Normal Power Up Sequence22
Service Tools23
Common Problems And Probable Cause24
Detailed Instructions For Loading Wavelength Table29
Obtain The Wl Calibration File For The Instrument30
Loading The Genesys 2- Wavelength Calibration Table30
Routine Maintenance33
Lamp Replacement33
Lamp Compartment34
Replace Fuse36
Removing Fuse Cover36
Remove And Replace Fuses37
Optical Description39
Optical Path39
Optical Alignment41
Filter And Lens Assembly Alignment42
Alignment Tool42
Alignment Check42
Alignment Procedure43
Electrical Circuit Description And Adjustment45
Primary Wiring45
Universal Input Ac/Dc Switching Power Supply Board46
Digital Circuitry47
The Microcontroller47
Memory47
Address Latch, Chip Selects, And I/O Decoding47
Analog Circuitry48
Direct I/O Signals48
Gain-Controlled Amplifier48
Dark Correction D/A Converter48
Voltage Sources49
The Display49
The Keyboard49
Tungsten Lamp Power Supply49
Filter Wheel Drive50
Monochromator Grating Limit Switch50
Serial Port50
Parallel Port50
Photodiode52
Disassembly And Replacement53
External Covers54
Lamp Door Assembly54
Removal54
Replacement54
Printer Cover55
Cover Assembly55
Cover Assembly: Top View55
Base Assembly: Bottom View56
Connections To Main Board57
Sample Compartment Cover Assembly58
Sample Compartment Cover Hinge Mounting59
Rear Panel60
Front Panel Assemblies61
Display61
Key Pad61
Internal Assemblies63
Main Circuit Board63
Power Entry Module65
Interior Layout66
Power Supply67
Detector Assembly68
Entrance Slit/Illumination Assembly69
Lamp Socket70
Spring71
Filter And Lens Assembly72
Filter Wheel73
Filter Wheel Motor74
Limit Switch74
Genesys 20: Bottom View75
Accessories77
Spare Parts And Special Tools79
Drawings And Schematics81
Mechanical Assemblies81
Lamp Socket Assembly84
Filter Motor Assembly84
Grating Motor Assembly85
Fan Assembly85
Mono Motor Power Cable Assembly86
Mono Motor Control Cable Assembly87
Detector Cable Assembly87
Power Supply Cable Assembly88
Limit Switch Cable Assembly89
Power Entry Cable Assembly90
Filter Assembly90
Turning Mirror Assembly92
Grating And Mount Assembly93
Cuvette Adapter Assembly94
Lamp Knob Assembly94
Entrance Slit / Illumination Assembly95
Display Assembly96
Main Cover Assembly98
Mono Motor Board100
Interface Cable - Ibm Pc/Xt101
Interface Cable - Ibm Pc/At102
Interface Cable - Non-Ibm103
Boards And Schematics105
Main Board Assembly111
Mono Driver Board Assembly117
Printer/Relay Cable119
Printer Cable120
Printer Assembly121
Base Assembly123
Main Assembly125
Detector Board Assembly129
Primary Wiring Schematic135
Detector (Preamp) Board Schematic137
Mono Drive Board Schematic139
Processor Schematic143
Memory 1 /I /O Decode Schematic145
Memory 2 - Oem / Optional Schematic147
Keyboard And Display Control Schematic149
Mono Drive And Analog Gain Reg. Schematic151
Filter Wheel And T-O-Y / Lamp Control Schematic153
Analog Processing Schematic155
A/D Schematic157
Lamp Power Supply Schematic159
Internal Printer Interface Schematic161
External Printer Interface Schematic163
Rs-232 Interface Schematic165
Accessory Module Interface Schematic167
Board Power Supply Schematic169
Memory 1 /I/O Decode Schematic173
Filter Wheel And T-O-Y/Lamp Control Schematic181
Internal Printer Interface189
External Printer Interface191
Power Supply Board Schematic197
Update Information199
Fan And Fan Guard Part Change199
"Sample too Bright" Error Message200
Changing The Main Pcb201
Change In Lamp Eccentric202