IBM 84875MU User Manual page 97

Note: See Chapter 8, "Parts listing, Type 8482 and 8487," on page 99 to determine which components are
replaceable by the customer (CRU), and which components must be replaced by a field service technician (FRU).
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.
Note: See Chapter 8, "Parts listing, Type 8482 and 8487," on page 99 to determine which components are
replaceable by the customer (CRU), and which components must be replaced by a field service technician (FRU).
Symptom
Problems such as broken cover
locks or indicator LEDs not
working
Note: See Chapter 8, "Parts listing, Type 8482 and 8487," on page 99 to determine which components are
replaceable by the customer (CRU), and which components must be replaced by a field service technician (FRU).
Symptom
A problem occurs only
occasionally and is difficult to
detect.
Note: See Chapter 8, "Parts listing, Type 8482 and 8487," on page 99 to determine which components are
replaceable by the customer (CRU), and which components must be replaced by a field service technician (FRU).
Symptom
All or some keys on the
keyboard do not work.
Hard disk drive problems
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 server 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.
General problems
FRU/action
v Broken CRU/FRU
Intermittent problems
FRU/action
1. Verify that:
v All cables and cords are connected securely to the rear of the server and
attached options.
v When the server is turned on, air is flowing from the rear of the server at the
fan grill. If there is no airflow, the fan is not working. This causes the server
to overheat and shut down.
v Ensure that the SCSI bus and devices are configured correctly and that the
last external device in each SCSI chain is terminated correctly.
2. Check the system error log.
Keyboard, mouse, or pointing-device problems
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 The server and the monitor are turned on.
2. Keyboard.
3. System board.
Chapter 7. Symptom-to-FRU index
87