Chapter 3. Service Processor Troubleshooting; Map: Service Processor Troubleshooting - IBM 3746-900 Installation And Maintenance Manual

Chapter 3. Service Processor Troubleshooting

MAP: Service Processor Troubleshooting

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 Copyright IBM Corp. 2001
Note about POST error code
The zeros before and after the error code might be not present for some PS/2
models. Messages might appears on your panel as three-, four-, or five-character
messages. When this occurs, add two zeros after the last characters and one, two,
or three zeros before the first character, so that you can look up the error as an
eight-character message.
Example:
101 displayed means 00010100
1701 displayed means 00170100
16680 displayed means 01668000
How to proceed
1. If you have both an error message and an incorrect audio response, diagnose
the error message first.
2. If you cannot run the diagnostic tests, or you get a diagnostic error code when
running a test, but did receive a POST error message, diagnose the POST
error message first.
3. If you did not receive any error message, look for a description of your error
symptoms in the first part of this index.
4. Check all power supply voltages before you replace the system board. (See
"Power Supply" on page 3-20.)
5. Check the hard-disk drive jumper settings before you replace a hard disk drive.
(See "Hard-Disk Drive Jumper Settings" on page 3-30.)
Notes:
1. Some errors are indicated with a series of beep codes. See "Beep Symptoms"
on page 3-15 for an explanation of the beep codes.
2. The Service Processor based on 6578 computer is defaulted to come up
quietly (no beep, no memory count, and checkpoint code display) when no
errors are detected by POST. To enable the beep and memory count, and
checkpoint code display when a successful POST occurs, enable Power on
Status in Setup. See "Service Processor Configuration / Setup Utility" on
page H-8.
3. The processor is a separate FRU from the system board; the processor is not
included with the system board FRU. See "Before Replacing a System Board"
on page 3-22 before replacing the system board.
001
(Step 001 continues)
3-1