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Teledyne API - Model 200EH/EM Operation Manual Table of Contents
vii
10.4.13. Power-up Circuit ...............................................................................................................................................221
10.5. Power Distribution &Circuit Breaker ...........................................................................................................................222
10.6. Communications Interface..........................................................................................................................................223
10.6.1. Front Panel Interface..........................................................................................................................................224
10.6.1.1. Analyzer Status LED’s ................................................................................................................................224
10.6.1.2. Keyboard ....................................................................................................................................................224
10.6.1.3. Display........................................................................................................................................................225
10.6.1.4. Keyboard/Display Interface Electronics ......................................................................................................225
10.7. Software Operation ....................................................................................................................................................227
10.7.1. Adaptive Filter.....................................................................................................................................................228
10.7.2. Calibration - Slope and Offset.............................................................................................................................228
10.7.3. Temperature/Pressure Compensation (TPC) .....................................................................................................229
10.7.4. NO
2
Converter Efficiency Compensation............................................................................................................230
10.7.5. Internal Data Acquisition System (iDAS) ............................................................................................................230
11. Troubleshooting & Repair ..................................................................................................................................................231
11.1. General Troubleshooting............................................................................................................................................231
11.1.1. Warning Messages.............................................................................................................................................232
11.1.2. Fault Diagnosis with Test Functions...................................................................................................................232
11.1.3. Using the Diagnostic Signal I/O Function ...........................................................................................................233
11.1.4. Status LED’s.......................................................................................................................................................235
11.1.4.1. Motherboard Status Indicator (Watchdog) ..................................................................................................235
11.1.4.2. CPU Status Indicator ..................................................................................................................................235
11.1.4.3. Relay Board and Status LEDs ....................................................................................................................235
11.2. Gas Flow Problems....................................................................................................................................................238
11.2.1. M200EH Internal Gas Flow Diagrams ................................................................................................................238
11.2.2. M200EM Internal Gas Flow Diagrams................................................................................................................241
11.2.3. Zero or Low Flow Problems................................................................................................................................243
11.2.3.1. Sample Flow is Zero or Low........................................................................................................................243
11.2.3.2. Ozone Flow is Zero or Low.........................................................................................................................244
11.2.4. High Flow............................................................................................................................................................245
11.2.5. Sample Flow is Zero or Low But Analyzer Reports Correct Flow .......................................................................245
11.3. Calibration Problems ..................................................................................................................................................246
11.3.1. Negative Concentrations ....................................................................................................................................246
11.3.2. No Response......................................................................................................................................................246
11.3.3. Unstable Zero and Span.....................................................................................................................................247
11.3.4. Inability to Span - No SPAN Key ........................................................................................................................247
11.3.5. Inability to Zero - No ZERO Key .........................................................................................................................248
11.3.6. Non-Linear Response.........................................................................................................................................248
11.3.7. Discrepancy Between Analog Output and Display .............................................................................................249
11.3.8. Discrepancy between NO and NO
X
slopes.........................................................................................................249
11.4. Other Performance Problems.....................................................................................................................................249
11.4.1. Excessive noise..................................................................................................................................................249
11.4.2. Slow Response...................................................................................................................................................249
11.4.3. Auto-zero Warnings............................................................................................................................................250
11.5. Subsystem Checkout..................................................................................................................................................251
11.5.1. Simple Vacuum Leak and Pump Check .............................................................................................................251
11.5.2. Detailed Pressure Leak Check ...........................................................................................................................251
11.5.3. Performing a Sample Flow Check ......................................................................................................................252
11.5.4. AC Power Configuration .....................................................................................................................................253
11.5.4.1. AC configuration – Internal Pump (JP7)......................................................................................................254
11.5.4.2. AC Configuration – Standard Heaters (JP2) ...............................................................................................255
11.5.4.3. AC Configuration –Heaters for Option Packages (JP6) ..............................................................................256
11.5.5. DC Power Supply Test Points ............................................................................................................................257
11.5.6. I
2
C Bus ...............................................................................................................................................................257
11.5.7. Keyboard / Display Interface...............................................................................................................................258
11.5.8. Genreal Relay Board Diagnostic ........................................................................................................................258
11.5.9. Motherboard .......................................................................................................................................................259
11.5.9.1. A/D functions...............................................................................................................................................259
11.5.9.2. Analog Output Voltages..............................................................................................................................259
11.5.9.3. Status Outputs............................................................................................................................................260
11.5.9.4. Control Inputs..............................................................................................................................................261
11.5.10. CPU..................................................................................................................................................................261
11.5.11. RS-232 Communication....................................................................................................................................262
11.5.11.1. General RS-232 Troubleshooting .............................................................................................................262
11.5.11.2. Modem or Terminal Operation ..................................................................................................................262
04521C (DCN5731)