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Troubleshooting the Analyzer
To troubleshoot two channel analyzer failures
To troubleshoot two channel analyzer failures
Use this test to isolate the failure when one channel fails in a two channel
analyzer.
1 Check for failing self tests and calibration routine.
a Set the power switch to on ( l ).
b When the power-up tests are finished, press the following keys:
[System Utility]
[
auto cal off]
[more cal setup
]
[
auto zero cal off]
[ Return]
[more]
[diagnostics]
[service functions]
1125
[enter]
[test log]
[ Return]
[functional tests]
[ADC]
(wait for test to finish)
[more]
[input]
(wait for test to finish)
[calibration]
c Do one of the following:
● If the self tests fail but do not lockup the analyzer, note the failure
messages and go to Step 2.
● If the analyzer locks up on the calibration routine but not on the ADC
or Input self test, note the failure messages and go to Step 2. Follow
the procedure except do not press the [
calibration] softkey.
● If the analyzer locks up on the ADC or Input self test, do Step 2 to see
if exchanging assemblies will allow the self tests to run. If the
analyzer still locks up on the ADC or Input self test after performing
Step 2, go to page 1-71 and follow ‘’To troubleshoot input and ADC
failures’’ for each channel.
● If the self tests pass, determine the failure symptom before continuing
with Step 2. For example, use the performance test procedures to
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