Processor Problems; Memory Problems - HP netserver e 800 Service Manual

Chapter 5
Symptom:
•
The SCSI subsystem stops working
If the SCSI subsystem should stop working, do the following:
1. Review the Troubleshooting Checklist and Mass Storage Guidelines before you continue.
2. Run DiagTools. Verify that the SCSI ID and other switch settings are correct and get specific
information or verification that the problem is the SCSI bus.
3. If an accessory board was added recently, check if there is a resource conflict between the new
board and an existing accessory board. Also, if you have changed the options on an existing
board, there may be a resource conflict.
a. Remove the new board and restart the computer. If this corrects the problem, the board is
either defective or it is trying to use a system resource used by the SCSI subsystem.
b. Check if the board is using memory, I/O addresses, or interrupt lines that are also used by
the SCSI subsystem.
4. Check to see if there have been recent changes to any software. For example, has anyone
moved, removed, or changed the configuration files or drivers? Refer to the software
documentation for more information.
5. If you suspect hardware failure and there are no system error messages, check each
component associated with the failure. Equipment failure is probably the most unlikely reason
for a SCSI subsystem failure.

Processor Problems

If a problem exists with the NetServer processor;
1. Remove and reseat the processor module(s).
2. Replace each of these components, one-at-a-time, with a known-good component, and retest
the NetServer:
• Processor
• Terminator (if so equipped)
CAUTION
3. If the fault persists, replace the system board.

Memory Problems

The memory modules are DIMMs.
NOTE
1. Review the Troubleshooting Checklist before you continue.
Do not push on the processor components; push only on the edge. Pushing on the
device may damage it.
If the POST (displayed at power-on time) indicates a defective memory module,
replace it.
Troubleshooting
61