Checkout procedures
The checkout procedures are the sequence of tasks that you should follow to
diagnose a problem. The basic checkout procedure is designed for anyone to use.
The advanced checkout procedure is intended for trained service technicians only.
About the checkout procedures
Before you perform either the basic checkout procedure or the advanced checkout
procedure for diagnosing hardware problems, review the following information:
v
Read the safety information that begins on page vii.
v
The diagnostic programs provide the primary methods of testing the major
components. If you are not sure whether a problem is caused by the hardware or
by the software, you can use the diagnostic programs to confirm that the
hardware is working correctly.
v
When you run the diagnostic programs, a single problem might cause more than
one error message. When this happens, correct the cause of the first error
message. The other error messages usually will not occur the next time you run
the diagnostic programs.
Exception:
If multiple error codes indicate a microprocessor error, the error
might be in a microprocessor or in a microprocessor socket. See
“Microprocessor problems” on page 27 for information about
diagnosing microprocessor problems.
v
Before you run the diagnostic programs, you must determine whether the failing
system-board tray is part of a shared hard disk drive cluster (two or more
system-board trays that share external storage devices). If it is part of a cluster,
you can run all diagnostic programs except the ones that test the storage unit
(that is, a hard disk drive in the storage unit) or the storage adapter that is
attached to the storage unit. The failing system-board tray might be part of a
cluster if any of the following conditions is true:
– You have identified the failing system-board tray as part of a cluster (two or
more system-board trays that share external storage devices).
– One or more external storage units are attached to the failing system-board
tray and at least one of the attached storage units is also attached to another
server or unidentifiable device.
Important:
If the system-board tray is part of a shared hard disk drive cluster,
run one test at a time. Do not run any suite of tests, such as “quick”
or “normal” tests, because this might enable the hard disk drive
diagnostic tests.
v
If the system-board tray is halted and a POST error code is displayed, see
“POST error messages” on page 15. If the system-board tray is halted and no
error message is displayed, see “Troubleshooting tables” on page 23 and
“Solving undetermined problems” on page 57.
v
For information about power-supply problems, see “Power problems” on page 28.
v
For intermittent problems, check the error log; see “Error logs” on page 18 and
“Diagnostic programs, messages, and error codes” on page 31.
Chapter 2. Diagnostics
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