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PCIIISA BUS Isolation
Solving Adapter Problems
If the customer reports a problem with a specific adapter:
1. Use the error message to isolate failure
2. Run diagnostics
3. If no problems are found run the application to recreate the failure
4. If you cannot recreate or resolye the problem contact the next level of support
PCI Bus Isolation
During bring up if the lights on the monitor remain Amber and there have not been any beep codes
signaled by the SBC card, you may have a bad PCI or ISA adapter that is affecting the operation of the
I/O and Service Processor. To isolate the problem:
1. Power down the system.
2. Remove all adapters from the PCI and ISA slots.
3. Leave the SBC card seated.
4. Disconnect the SCSI cable and Diskette cable from the Single Board Computer
5. Power up the system.
6. Refer to "Sequence of events from a power up" on page 3 to verify the power sequence.
7. If the initial power on screen now displays:
American Megtrends AMIBIOS (C)
TRENTON Technology Inc.
Then one of the adapters is bad.
8. Power down the system.
9. Plug the cables and adapters in the following sequence one at a time, powering up and down each
time to verify if the initiate power on screen displays. This will help to locate which adapter is bad.
• SCSI cable and Diskette cable
• SSA Adapter
• RS422 Adapter
• Communication Adapters
• PCA and ECA adapters
18
Service Guide
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