Diagnostic, Troubleshooting - Teledyne 6400A Instruction Manual

TAI Model 6400A SO

9 DIAGNOSTIC, TROUBLESHOOTING

This section of the manual contains information on diagnosing and corrective action procedure
for the 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.
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
General Troubleshooting Hints
1. Is the fault light on? If it stays on after you clear the warning messages, see Section 9.1.2.
2. Think of the analyzer as three sections to isolate the cause of the problems:
Section 1 - Pneumatics - Over 50% of all analyzer problems are traced to leaks in the pump,
sample filter, instrument internal pneumatics, calibrator or external sample handling
equipment.
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, Preamp, and signal
processing. Refer to Section 9.1.3.3 on use of Optical Test.
Analyzer Operator Manual, 02164, Rev. G
2
The operations outlined in this chapter are to be
performed by qualified maintenance personnel only.
NOTE
and therefore meaningless.
9-1
NOTE