General Problems; Hard Disk Drive Problems - IBM x3950 Problem Determination And Service Manual

General problems

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 3, "Parts listing, Type 8878 and 8879," on page 109 to determine which components are
customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Symptom
A cover lock is broken, an LED
is not working, or a similar
problem has occurred.

Hard disk drive problems

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 3, "Parts listing, Type 8878 and 8879," on page 109 to determine which components are
customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Symptom
Not all drives are recognized by
the hard disk drive diagnostic
test (the Fixed Disk test).
The server stops responding
during the hard disk drive
diagnostic test.
A hard disk drive was not
detected while the operating
system was being started.
A hard disk drive passes the
diagnostic Fixed Disk Test but
the problem remains.
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IBM System x3950 Type 8878 and System x3950 E Type 8879: Problem Determination and Service Guide
Action
If the part is a CRU, replace it. If the part is a FRU, the part must be replaced by a
trained service technician.
Action
Remove the drive indicated on the diagnostic tests; then, run the hard disk drive
diagnostic test again. If the remaining drives are recognized, replace the drive that
you removed with a new one.
Remove the hard disk drive that was being tested when the server stopped
responding, and run the diagnostic test again. If the hard disk drive diagnostic test
runs successfully, replace the drive that you removed with a new one.
Reseat all hard disk drives and cables; then, run the hard disk drive diagnostic
tests again.
Run the diagnostic SCSI Fixed Disk Test (see "Running the diagnostic programs"
on page 60).
Note: This test is not available to servers using RAID or servers with IDE or SATA
hard disk drives.