Symptom-to-FRU Index
The Symptom-to-FRU Index lists error symptoms and
possible causes. The most likely cause is listed first.
Always begin with “General Checkout (3550-001)” on
page 316 or “General Checkout (3550-002)” on page 322.
This index also can be used to help you decide which
FRUs to have available when servicing the 3550
Expansion Unit.
If you cannot correct the problem using this index, go to
“Undetermined Problem” on page 333.
IMPORTANT:
1. Before replacing any SCSI devices, verify that there
are no duplicate SCSI ID settings.
2. If you have both an error message and an incorrect
audio response, diagnose the error message first.
3. If you cannot run the advanced diagnostic tests, but
did receive a POST error message, diagnose the
POST error message.
4. If you did not receive an error message, look for a
description of your error symptoms in the first part of
this index.
5. Check all power supply voltages before you replace
the system board of the 3550 Expansion Unit. (See
“Power Systems Checkout” on page 327.)
6. If an error message is not listed, there is a device
installed that requires an additional diskette or service
manual. Refer to the diskette or the service manual
for that device.
In the following index,
X
in an error message can be any
number.
Numeric Error Codes
Symptom/Error FRU/Action
000113XX 1. Any Adapter
2. System Board of 3550
Expansion Unit
3. Any Drive
000114XX 1. Any Adapter
00016300, 00016400,
00016500
(If setting configuration does
not solve the problem, see
“Checking the Installed
Devices List” on page 334.)
1. Set Configuration/
Features
2. System Board of 3550
Expansion Unit
000166XX 1. Any Adapter
Expansion Unit (3550) 329
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