IBM Netfinity 5100 User Reference Manual page 166

Troubleshooting charts
Device
General problems
Problems such as broken
cover locks or indicator
lights not working.
Intermittent problems
A problem occurs only
occasionally and is difficult
to detect.
Keyboard, mouse, or
pointing-device problems.
All or some keys on the
keyboard do not work.
The mouse or pointing
device does not work.
Memory problems
The amount of memory
displayed is less than the
amount of memory
installed.
Microprocessor problems
The server emits a
continuous tone during
POST.
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IBM® Netfinity® 5100 User's Reference
Call for service.
Verify that:
1. All cables and cords are connected securely to the rear of the server and
attached options.
2. When the server is turned on, air is flowing from the rear of the server at
the fan grill. If there is no air flow, the fan is not working. This causes the
server to overheat and shut down.
3. Ensure that the SCSI bus and devices are configured correctly and that
the last external device in each SCSI chain is terminated correctly.
If the items above are correct, call for service.
1. Make sure that the keyboard cable is properly connected to the server.
2. Make sure that the server and the monitor are turned on.
3. Try using another keyboard.
If the items above are correct, call for service.
1. Verify that the mouse or pointing-device cable is securely connected and
the device drivers are installed correctly.
2. Try using another mouse or pointing device.
If the problem remains, call for service.
Verify that:
1. The memory modules are seated properly.
2. You have installed the correct type of memory.
3. If you changed the memory, you updated the memory configuration
with the Configuration/Setup Utility program.
4. All banks of memory on the DIMMs are enabled. The server might have
automatically disabled a DIMM bank when it detected a problem or a
DIMM bank could have been manually disabled.
If the above items are correct, run the memory diagnostic program. The
system might have detected a bad memory module and automatically
reallocated memory to enable you to continue to operate. If the memory tests
fail, call for service or replace the failing DIMM.
The startup (boot) microprocessor is not working properly.
Verify that the startup microprocessor is seated properly. If it is, replace the
startup microprocessor.
If the problem remains, call for service.
Table 18. Troubleshooting charts
Suggested action