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Teledyne API Model 200A NO
X
Analyzer Instruction Manual, 02246, Rev. G, DCN 5247
9 TROUBLESHOOTING, ADJUSTMENTS
NOTE
The operations outlined in this chapter are to be
performed by qualified maintenance personnel only.
This section of the manual contains information on diagnosing and repairing instrument
performance problems. It contains information on how to use and interpret TEST and
DIAGNOSTIC data as well as WARNING messages the instrument generates. There is
information on how to troubleshoot the instrument subsystems. Finally there is information to
perform adjustments such as DAC calibration procedures.
This manual provides troubleshooting procedures that address problems to the board level. For
component level troubleshooting, consult the schematics for the appropriate board in Appendix
A.1.
NOTE
The values of the readings shown on the front panel of the
instrument may at times read XXXXXX. This means that the
reading is off scale and therefore meaningless.
General Troubleshooting
1. If the fault is light on and it stays on after you clear the warning messages, see Section
9.1.2.
2.
Think of the analyzer as three sections:
Section 1: Pneumatics - Over 50% of all analyzer problems are traced to leaks in the pump
assembly, sample filter, instrument internal pneumatics, calibrator or external sample
handling equipment. Suspect a leak first, and check Section 9.2.
Section 2: Electronics - data processing section. This can be readily checked out using
Electric Test in Section 9.1.3.2.
Section 3: Optics - Optical section consisting of PMT, HVPS, Pream
p, and signal
processing. Refer to Section 9.1.3.3 on use of Optical Test.
9-1
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