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Step 3
Try to boot and run standalone diagnostics against the system, particularly against the
intended boot device.
If diagnostics boot successfully:
1. Go to the Task Selection Menu and select Display Configuration and Resource List.
If the intended boot device is not listed, go to "MAP 0290: Missing Resource
Problem Resolution" in the RS/6000 and Eserver pSeries Diagnostics Information
for Multiple Bus Systems .
2. If an SRN, not an 8-digit error code, is reported, go to the RS/6000 and Eserver
pSeries Diagnostics Information for Multiple Bus Systems manual.
3. If the diagnostics are successful, it may be necessary to perform an operating
system-specific recovery process, or reinstall the operating system.
If diagnostics do not boot successfully:
1. Verify proper SCSI bus termination.
2. Check SCSI cabling.
3. It is possible that another attached SCSI device is causing the problem. Do the
following:
a. Disconnect the signal and power cables from the disk drive cage backplane.
b. Disconnect the disk drive(s) in the disk drive cage from the backplane.
c. Disconnect the signal and power cables from any other SCSI devices attached
d. Try to boot the standalone diagnostics again.
e. If you are still unable to load standalone diagnostics, go to "Step 4" on
f. If standalone diagnostics load, one of the disconnected devices is causing the
160
Service Guide
to the SCSI adapter that the CD-ROM drive is attached to.
page 161.
problem. Reconnect the devices one at a time and retry the boot operation until
the problem recurs and replace the device that caused the problem. (If the
problem appears to be one of the disk drives in the disk drive cage, be aware it
could be either the disk drive or the backplane.) Go to "MAP 410: Repair
Checkout" in the RS/6000 and Eserver pSeries Diagnostics Information for
Multiple Bus Systems .
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