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Model 9110EH Instruction Manual M9110EH Documentation
11.5.7. Keyboard / Display Interface .............................................................................. 211
11.5.8. Relay Board ..................................................................................................... 212
11.5.9. Motherboard .................................................................................................... 212
11.5.9.1. A/D functions............................................................................................. 212
11.5.9.2. Analog Output Voltages............................................................................... 212
11.5.9.3. Status Outputs........................................................................................... 213
11.5.9.4. Control Inputs ........................................................................................... 213
11.5.10. CPU .............................................................................................................. 214
11.5.11. RS-232 Communication ................................................................................... 214
11.5.11.1. General RS-232 Troubleshooting................................................................. 214
11.5.11.2. Modem or Terminal Operation .................................................................... 215
11.5.12. PMT Sensor.................................................................................................... 215
11.5.13. PMT Preamplifier Board.................................................................................... 215
11.5.14. High Voltage Power Supply............................................................................... 216
11.5.15. Pneumatic Sensor Assembly ............................................................................. 216
11.5.15.1. Reaction Cell Pressure ............................................................................... 217
11.5.15.2. Sample Pressure ...................................................................................... 217
11.5.15.3. Ozone Flow.............................................................................................. 218
11.5.16. NO
2
Converter ................................................................................................ 218
11.5.17. O
3
Generator.................................................................................................. 219
11.5.18. IZS Option ..................................................................................................... 219
11.5.19. Box Temperature ............................................................................................ 220
11.5.20. PMT Temperature............................................................................................ 220
11.6. Repair Procedures ................................................................................................... 220
11.6.1. Disk-on-Chip Replacement ................................................................................. 221
11.6.2. Flash Chip Replacement or Upgrade .................................................................... 221
11.6.3. O
Generator Replacement................................................................................. 222
11.6.4. Sample and Ozone Dryer Replacement ................................................................ 222
11.6.5. PMT Sensor Hardware Calibration........................................................................ 223
11.6.6. Replacing the PMT, HVPS or TEC ......................................................................... 225
11.7. Technical Assistance................................................................................................ 226
viii M9110EH Rev 0
