IBM IntelliStation Z Pro Type 6221 Hardware Maintenance Manual page 101

Hard disk drive problems
Symptom
Not all drives are recognized by
the hard disk drive diagnostic
test (Fixed Disk test).
System stops responding during
hard disk drive diagnostic test.
General problems
Symptom
Problems such as broken cover
locks or indicator LEDs not
working
Intermittent problems
Symptom
A problem occurs only
occasionally and is difficult to
detect.
Keyboard, mouse, or pointing-device problems
Symptom
All or some keys on the
keyboard do not work.
The mouse or pointing device
does not work.
FRU/action
1. Remove the first drive not recognized and try the hard disk drive
diagnostic test again.
2. If the remaining drives are recognized, replace the drive you removed with a
new one.
1. Remove the hard disk drive being tested when the computer stopped
responding and try the diagnostic test again.
2. If the hard disk drive diagnostic test runs successfully, replace the drive you
removed with a new one.
FRU/action
v Broken CRU/FRU
FRU/action
v Verify that:
– All cables and cords are connected securely to the rear of the computer and
attached options.
– When the computer is turned on, air is flowing from the rear of the computer
at the fan grill. If there is no airflow, the fan is not working. This causes the
computer to overheat and shut down.
– Ensure that the SCSI bus and devices are configured correctly and that the
last external device in each SCSI chain is terminated correctly.
FRU/action
1. Verify that:
v The keyboard cable is securely connected to the system, and the keyboard
and mouse cables are not reversed.
v Both the computer and the monitor are turned on.
2. Keyboard.
3. System board.
1. Verify that:
v The mouse or pointing-device cable is securely connected, and that the
keyboard and mouse cables are not reversed.
v The mouse device drivers are installed correctly.
v Both the computer and the monitor are turned on.
2. Mouse or pointing device.
3. System board.
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Symptom-to-FRU index