IBM 84885BU Maintenance And Troubleshooting Manual page 121

Note: See Chapter 7, "Parts listing Type 8488 and 8648," on page 129 to determine which components are
replaceable by the customer (CRU), and which components must be replaced by a field service technician (FRU).
Symptom
System stops responding during
hard disk drive diagnostic test.
A hard disk drive passes the
diagnostic Fixed Disk Test but
the problem remains.
Note: See Chapter 7, "Parts listing Type 8488 and 8648," on page 129 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 7, "Parts listing Type 8488 and 8648," on page 129 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.
The mouse or pointing device
does not work.
Hard disk drive
FRU/action
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.
Run the diagnostic SCSI Fixed Disk Test (see "Running the on-board diagnostic
programs" on page 57).
Note: This test is not available on servers that have RAID arrays or servers that
have IDE or SATA hard disk drives.
Intermittent
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
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.
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.
2. Mouse or pointing device.
3. System board.
Chapter 6. Symptom-to-FRU index
111