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6-3
Power On Fault Isolation
Symptom:
Possible Cause:
What to Do:
Symptom:
Possible Cause:
What to Do:
Symptom:
Possible Cause:
What to Do:
6-4
Fault Isolation
Symptom:
Possible Cause:
What to Do:
Symptom:
Possible Cause:
What to Do:
ADFM Technical Manual (January 2000)
No wake up message at LCD display or computer screen.
Power
Refer to "Built-in Test is Not Executing," page 6-6.
No wake up message at LCD, but computer screen displays
wake up message when a BREAK is sent, or when a
manual Reset is applied (Reset Switch).
LCD. Front Panel Interface Board. Cable connection between
LCD and front panel. Cable connection between Front Panel
Interface Board and ADFM Motherboard. ADFM Motherboard.
Replace LCD. Replace Front Panel Interface Board. Replace
ADFM Motherboard.
No wake up message at computer screen, but LCD displays
wake up message and completes BIT.
RS-232 connection. Computer's communications port set up
wrong. Front Panel Interface Board. ADFM Motherboard.
Troubleshoot cabling. Run BBTEST to set up computer's COM-
port. Replace Front Panel Interface Board. Replace ADFM
Motherboard.
"Transducer not found"
Transducer Cable. Transducer Cable Connector. Cabling
between Motherboard and Transducer Connector of Electronics
Unit. Transducer.
Refer to "BIT Determines a Problem Associated with the
Transducer," page 6-10.
"Recorder not found"
Recorder cable assembly. Recorder Assembly. ADFM
Motherboard.
Check recorder cable connection to motherboard. Replace
Recorder Assembly. Replace ADFM Motherboard.
ADFM Troubleshooting
page 6-3
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