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TELEDYNE API
M703E Calibrator Operator’s Manual Table of Contents
11.4.4. I
2
C Bus.............................................................................................................................................. 188
11.4.5. Keyboard/Display Interface............................................................................................................... 188
11.4.6. Relay PCA ........................................................................................................................................ 189
11.4.7. PHOTOMETER O3 Generator Pressure /FLOW SENSOR Assembly ............................................ 189
11.4.8. Motherboard...................................................................................................................................... 191
11.4.8.1. A/D Functions............................................................................................................................ 191
11.4.8.2. Test Channel / Analog Outputs Voltage.................................................................................... 191
11.4.8.3. Status Outputs........................................................................................................................... 192
11.4.8.4. Control Inputs ............................................................................................................................ 193
11.4.8.5. Control Outputs ......................................................................................................................... 194
11.4.9. CPU .................................................................................................................................................. 194
11.4.10. RS-232 Communications................................................................................................................ 195
11.4.10.1. General RS-232 Troubleshooting............................................................................................ 195
11.4.10.2. Troubleshooting Calibrator/Modem or Terminal Operation..................................................... 195
11.4.11. Temperature Problems................................................................................................................... 196
11.4.11.1. Box / Chassis Temperature..................................................................................................... 196
11.4.11.2. Photometer Sample Chamber Temperature ........................................................................... 196
11.4.11.3. UV Lamp Temperature............................................................................................................ 196
11.4.11.4. Ozone Generator Temperature............................................................................................... 197
11.5. Troubleshooting the O
3
photometer........................................................................................................ 197
11.5.1. Dynamic Problems with the O
3
photometer...................................................................................... 197
11.5.1.1. Noisy or Unstable O
3
Readings at Zero .................................................................................... 197
11.5.1.2. Noisy, Unstable, or Non-Linear Span O
3
Readings .................................................................. 198
11.5.1.3. Slow Response to Changes in Concentration........................................................................... 198
11.5.1.4. The Analog Output Signal Level Does Not Agree With Front Panel Readings......................... 198
11.5.1.5. Cannot Zero............................................................................................................................... 198
11.5.1.6. Cannot Span.............................................................................................................................. 198
11.5.2. Checking Measure / REFERENCE VALVE...................................................................................... 199
11.6. Troubleshooting the O
3
Generator.......................................................................................................... 200
11.6.1. Checking The UV Lamp Power Supply ............................................................................................ 200
11.7. Trouble Shooting the Optional O
3
generator .......................................................................................... 201
11.7.1. Checking The UV Source Lamp Power Supply................................................................................ 201
11.8. Repair Procedures.................................................................................................................................. 202
11.8.1. Repairing Sample Flow Control Assembly ....................................................................................... 202
11.8.2. Disk-On-Chip Replacement Procedure ............................................................................................ 203
11.9. Technical Assistance.............................................................................................................................. 203
12. A PRIMER ON ELECTRO-STATIC DISCHARGE......................................................... 205
12.1. How Static Charges are Created............................................................................................................ 205
12.2. How Electro-Static Charges Cause Damage ......................................................................................... 206
12.3. Common Myths About ESD Damage..................................................................................................... 207
12.4. Basic Principles of Static Control............................................................................................................ 207
12.4.1. General Rules................................................................................................................................... 207
12.4.2. Basic anti-ESD Procedures for Analyzer Repair and Maintenance ................................................. 209
12.4.2.1. Working at the Instrument Rack ................................................................................................ 209
12.4.2.2. Working at an Anti-ESD Work Bench........................................................................................ 209
12.4.2.3. Transferring Components from Rack to Bench and Back......................................................... 210
12.4.2.4. Opening Shipments from Teledyne Instruments Customer Service. ........................................ 210
12.4.2.5. Packing Components for Return to Teledyne Instruments Customer Service.......................... 211
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