Service manual

Troubleshooting the 35900E
Verify the System is Ready for Operation
Released: MAY 2000 Agilent 35900E Service Manual 9
If the problem persists after cycling the power, note the LED pattern on the
front panel display. Check the following table for possible causes for failure.
Table 1. Possible Causes for Failure
Verify the System is Ready for Operation
Once you have verified that the 35900E is ready for operation, you can use the
test chromatogram stored in the 35900E ROM in conjunction with the Host
computer software to check the operation of the entire system. The test
chromatogram is turned on via configuration switches 3 through 6 on the
35900E’s back panel.
Condition Possible Causes
POWER light is OFF Power cord is disconnected or problem with the
power supply
FAULT light remains ON and COMM light is
flashing (note: other lights may also be flashing)
MIO card may be loose or there may be a
problem with the MIO card
FAULT light remains ON and Channel B NOT
READY light is ON
No SIMM module in the front slot or there may
be a problem with the SIMM module installed
FAULT light remains ON and Channel B RUN light
is ON
Problem found with SIMM module installed in the
rear slot