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 problems” on page 52.
b. Turn off the server and all external devices.
c. Check all internal and external devices for compatibility.
d. Check all cables and power cords.
e. Make sure the server is cabled correctly.
f. Set all display controls to the middle positions.
g. Turn on all external devices.
h. Turn on the server. If the server does not start, see “Troubleshooting tables”
on page 43.
i. Check the system-error LED on the operator information panel. If it is
flashing, check the light path diagnostics LEDs (see “Light path diagnostics”
on page 56).
j. Check for the following results:
v Successful completion of POST (see “POST” on page 19 for more
information)
v Successful completion of startup
3.
Did one or more beeps sound?
v No: Find the failure symptom in “Troubleshooting tables” on page 43; if
necessary, run the diagnostic programs (see “Running the diagnostic
programs” on page 62).
– If you receive an error, see “Diagnostic error codes” on page 64.
– If the diagnostic programs were completed successfully and you still
suspect a problem, see “Solving undetermined problems” on page 86.
v Yes: Find the beep code in “POST beep codes” on page 19; if necessary,
see “Solving undetermined problems” on page 86.
42 IBM System x3550 Type 7978 and 1913: Problem Determination and Service Guide
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