Citizen GSX-190 Service Manual Page 173
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- Table of contents
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PN 4237242C
4.29-1
SERVICE AND REPAIR PROCEDURES
HGB PREAMP ADJUSTMENT
4
4.29 HGB PREAMP ADJUSTMENT
Tools/Supplies Needed
B #2 Phillips-head screwdriver
B DVM with a 3 1/2 digit display
B Pot adjustment tool or small-blade screwdriver
Procedure
1. Ensure the system is primed and that there is clear diluent in the WBC bath.
2. Open the lower chassis, as directed under Heading 4.4, and locate the Hgb Preamp card
(Figure 4.4-1).
3. Adjust the Hgb-blank reading. Using TP2 or the chassis ground for the negative lead and
TP1 for the positive lead, adjust R7 for a DVM reading of 4.5 V.
ATTENTION: When covering the photodetector, make sure no light can get to the detector.
Remove it from the WBC bath if necessary.
4. Adjust the Hgb Zero Offset. Cover the photodetector so that it receives no light and
adjust R8 until a reading of 0.0 ±1 mV is attained.
5. Restore the Hgb system and check the original Hgb-blank reading. If it has changed by
more than 0.05 V, repeat the blank and zero adjustments.
6. Restore the instrument to operating status and perform an SVP (Heading 5.1).
Note: Though a DVM is preferable, this adjustment can be performed using the service
voltage display.
C
- Service Manual 1
- LEGAL NOTICES 2
- REVISION STATUS 3
- CONTENTS 10
- ILLUSTRATIONS 14
- INTRODUCTION 21
- Conventions 22
- 1.2 SAFETY PRECAUTIONS 23
- Troubleshooting 24
- INSTRUMENT DESCRIPTION 29
- Software Menu System 30
- Software Tables 30
- SYSTEM OVERVIEW 31
- Aspirate Table 33
- Power-up Table 34
- 2.2 POWER SUPPLY 35
- POWER SUPPLY 37
- AC POWER/VACUUM 39
- 2.3 FLUIDICS PANEL 43
- Diluter Panel 44
- FLUIDICS PANEL 45
- Vacuum Regulator 51
- 2.3-10 52
- 2.4 SYSTEM CONTROL 53
- SYSTEM CONTROL 54
- Test Points 63
- 2.5 DATA ACQUISITION 65
- DATA ACQUISITION 66
- 7242013A 67
- Power Supply Conditioning 71
- Oscillator Circuit 71
- Control Functions 71
- 2.6 PERIPHERALS 75
- PERIPHERALS 76
- INSTALLATION PROCEDURES 79
- PREINSTALLATION CHECKS 80
- 3.2 INITIAL SETUP 81
- Connect the Reagents 82
- Connect the Printer 83
- Enter the Initial Settings 84
- 3.3 INSTRUMENT VERIFICATION 85
- INSTRUMENT VERIFICATION 86
- 3.4 OPTIONAL TICKET PRINTERS 87
- OPTIONAL TICKET PRINTERS 88
- SERVICE AND REPAIR PROCEDURES 97
- GUIDELINES 98
- Accessing Service Report 99
- Accessing Service Diagnostic 99
- System Reboot 100
- 4.3 REMOVING THE TOP COVER 101
- REMOVING THE TOP COVER 102
- 4.4 OPENING THE LOWER CHASSIS 103
- OPENING THE LOWER CHASSIS 104
- 4.5 AT POWER SUPPLY 105
- Verification 106
- 4.6 AT MOTHERBOARD 107
- Installation 108
- AT MOTHERBOARD 110
- Tools/Supplies Needed 111
- 4.12-4 124
- 4.13 LINEAR POWER SUPPLY CARD 125
- 4.13-4 128
- 4.14 VACUUM SENSOR CARD 129
- MOTOR/SOLENOID DRIVER CARD 132
- 4.15-4 134
- 4.16-4 138
- 4.17 PROBE AND PROBE WIPE 139
- 4.17-4 142
- 4.18 PROBE MOTOR 143
- 4.18-2 144
- 4.19 TRAVERSE DRIVE BELT 145
- 4.19-4 148
- 4.20 TRAVERSE MOTOR 149
- 4.20-4 152
- 4.21 SYRINGE ASSEMBLY 153
- 4.21-2 154
- 7242023A 157
- to check 158
- to check PM1 158
- 4.23 VACUUM PUMP 159
- 4.23-2 160
- 4.24-4 164
- 4.25 DILUTER PANEL SOLENOIDS 165
- 4.25-2 166
- 4.26 SWEEP-FLOW TUBING 167
- 4.27 LATEX GAIN ADJUSTMENT 169
- 4.27-2 170
- 4.28 AIM ADJUSTMENT 171
- AIM ADJUSTMENT 172
- 4.29 HGB PREAMP ADJUSTMENT 173
- 4.29-2 174
- 4.30 VACUUM ADJUSTMENT 175
- 4.30-2 176
- Procedure 177
- 4.31-2 178
- MAINTENANCE PROCEDURES 181
- 5.2 PMI RECOMMENDATIONS 183
- Adjustment Procedures 184
- Verification Procedures 184
- SCHEMATICS AND BLOCK DIAGRAMS 187
- 6.2 SCHEMATICS 189
- SCHEMATICS 190
- TROUBLESHOOTING 193
- Service Menu 194
- 7242046A 195
- 7242044A 196
- GENERATING A SERVICE REPORT 197
- 7.3 SERVICE DIAGNOSTIC 199
- SERVICE DIAGNOSTIC 200
- PN 4237242C 201
- PARTS LISTS 211
- MASTER PARTS LISTS 212
- (Continued) 213
- 8.2 ILLUSTRATED PARTS 219
- ILLUSTRATED PARTS 220
- (OPTIONAL) 223
- REAR OF TRAVERSE HOUSING 224
- 8.2-10 228
- 8.2-12 230
- 8.2-14 232
- QUICK REFERENCE INFORMATION 235
- AC Power/Vacuum Relay Card 237
- AT Motherboard 237
- DRA Card 238
- Hgb Preamp Card 238
- Linear Power Supply Card 238
- Motor/Solenoid Driver Card 239
- Sensor Preamp Adapter Card 240
- SPAD Card 240
- URA Card 240
- Vacuum Sensor Card 240
- A.3 PRINTER SETTINGS 241
- PRINTER SETTINGS 242
- A.4 FUNCTIONS 243
- FUNCTIONS 244
- A.5 MENU TREE 245
- MENU TREE 246
- MESSAGE/ERROR CODE LISTINGS 249
- C.3 AMIBIOS BEEP CODES 253
- AMIBIOS BEEP CODES 254
- OPTIONAL PRINTERS 255
- DIP Switch SW1 Settings 256
- Installation Procedure 256
- Printer Self-Test 256
- E.1 ISL OPTION FOR RALS 257
- ISL OPTION FOR RALS 258
- Numerics 259
- PN 4237242 260
- TRADEMARKS 271
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