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v For information about power-supply problems, see "Solving power problems"
on page 156, "Power problems" on page 152, and "Power-supply LEDs" on page
129.
v For intermittent problems, check the event log; see "Event logs" on page 133
andAppendix C, "DSA diagnostic test results," on page 515.
Performing the checkout procedure
Use this information to perform the checkout procedure.
About this task
To perform the checkout procedure, complete the following steps:
Procedure
1. Is the server part of a cluster?
v No: Go to step 2.
v Yes: Shut down all failing servers that are related to the cluster. Go to step 2.
2. Complete the following steps:
a. Check the power supply LEDs (see "Power-supply LEDs" on page 129).
b. Turn off the server and all external devices.
c. Check all internal and external devices for compatibility at
http://www.ibm.com/systems/info/x86servers/serverproven/compat/us.
d. Check all cables and power cords.
e. Set all display controls to the middle positions.
f. Turn on all external devices.
g. Turn on the server. If the server does not start, see "Troubleshooting by
symptom" on page 140.
h. Check the system-error LED on the front information panel. If it is lit, check
the light path diagnostics LEDs (see "Light path diagnostics" on page 126).
i. Check for the following results:
v Successful completion of POST (see "POST" on page 136 for more
information).
v Successful completion of startup, which is indicated by a readable display
of the operating-system desktop.
3. Is there a readable image on the monitor screen?
v No: Find the failure symptom in "Troubleshooting by symptom" on page
140; if necessary, see"Solving undetermined problems" on page 158.
v Yes: Run DSA (see "Running DSA Preboot diagnostic programs" on page
138).
– If DSA reports an error, follow the instructions in Appendix C, "DSA
diagnostic test results," on page 515.
– If DSA does not report an error but you still suspect a problem, see
"Solving undetermined problems" on page 158.
Chapter 4. Troubleshooting
123
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Troubleshooting
