Teledyne 100E - Page 10

Model 100E Instruction Manual
viii 045150102 Rev XB1
11.1.4. Status LEDs ......................................................................................201
11.1.4.1. Motherboard Status Indicator (Watchdog) .......................................201
11.1.4.2. CPU Status Indicator ....................................................................201
11.1.4.3. Relay Board Status LEDs...............................................................201
11.2. Gas Flow Problems........................................................................ 203
11.2.1. Zero or Low Flow...............................................................................204
11.2.1.1. Sample Flow ...............................................................................204
11.2.2. High Flow .........................................................................................204
11.3. Calibration Problems ..................................................................... 205
11.3.1. Negative Concentrations.....................................................................205
11.3.2. No Response.....................................................................................205
11.3.3. Unstable Zero and Span .....................................................................206
11.3.4. Inability to Span - No SPAN Key ..........................................................206
11.3.5. Inability to Zero - No ZERO Key...........................................................206
11.3.6. Non-Linear Response .........................................................................207
11.3.7. Discrepancy Between Analog Output and Display ...................................207
11.4. Other Performance Problems .......................................................... 208
11.4.1. Excessive noise .................................................................................208
11.4.2. Slow Response ..................................................................................208
11.5. Subsystem Checkout..................................................................... 208
11.5.1. Detailed Pressure Leak Check..............................................................209
11.5.2. Performing a Sample Flow Check .........................................................209
11.5.3. AC Power Configuration ......................................................................210
11.5.4. DC Power Supply ...............................................................................210
11.5.5. I
2
C Bus ............................................................................................211
11.5.6. Keyboard / Display Interface ...............................................................211
11.5.7. Relay Board ......................................................................................212
11.5.8. Motherboard .....................................................................................213
11.5.8.1. A/D functions ..............................................................................213
11.5.8.2. Analog Output Voltages ................................................................213
11.5.8.3. Status Outputs ............................................................................214
11.5.8.4. Control Inputs .............................................................................214
11.5.9. CPU .................................................................................................215
11.5.10. RS-232 Communication ....................................................................215
11.5.10.1. General RS-232 Troubleshooting ..................................................215
11.5.10.2. Modem or Terminal Operation......................................................216
11.5.11. PMT Sensor.....................................................................................216
11.5.12. PMT Preamplifier Board.....................................................................216
11.5.13. High Voltage Power Supply................................................................217
11.5.14. Pneumatic Sensor Assembly ..............................................................217
11.5.14.1. Sample Pressure ........................................................................217
11.5.15. IZS Option ......................................................................................217
11.5.16. Box Temperature .............................................................................218
11.5.17. PMT Temperature ............................................................................218
11.6. Repair Procedures......................................................................... 218
11.6.1. Disk-on-Chip Replacement ..................................................................219
11.6.2. Flash Chip Replacement or Upgrade .....................................................219
11.6.3. PMT Sensor Hardware Calibration ........................................................220