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Step 1.
Is the server part of a cluster?
• No: Go to step Step 2 2 on page 57.
• Yes: Shut down all failing servers that are related to the cluster. Go to step Step 2 2 on page 57.
Step 2.
Complete the following steps:
a.
Check the power supply LEDs (see "Power-supply LEDs" on page 59).
b.
Turn off the server and all external devices.
c.
Check all internal and external devices for compatibility at http://www.lenovo.com/
serverproven/.
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 67.
h.
Check the system-error LED on the operator information panel. If it is lit, check the light path
diagnostics LEDs (see "Server controls, LEDs, and power" on page 13).
i.
Check for the following results:
• Successful completion of POST (see "POST" on page 64 for more information)
• Successful completion of startup, which is indicated by a readable display of the operating-
system desktop
Step 3.
Is there a readable image on the monitor screen?
• No: Find the failure symptom in "Troubleshooting by symptom" on page 67; if necessary, see
"Solving undetermined problems" on page 80.
• Yes: Run DSA (see "Running DSA Preboot diagnostic programs" on page 65).
– If DSA reports an error, follow the instructions in Appendix C "DSA diagnostic test results" on
page 715.
– If DSA does not report an error but you still suspect a problem, see "Solving undetermined
problems" on page 80.
Diagnostic tools
The section introduces available tools to help you diagnose and solve hardware-related problems.
• Light path diagnostics
Use light path diagnostics to diagnose system errors quickly.
• Event logs
The event logs list the error codes and messages that are generated when an error is detected for the
subsystems IMM2.1, POST, DSA, and the server baseboard management controller. See "Event logs" on
page 62 for more information.
• Integrated management module 2.1
The integrated management module 2.1 (IMM2.1) combines service processor functions, video controller,
and remote presence and blue-screen capture features in a single chip. The IMM provides advanced
service-processor control, monitoring, and alerting function. If an environmental condition exceeds a
threshold or if a system component fails, the IMM lights LEDs to help you diagnose the problem, records
the error in the IMM event log, and alerts you to the problem. Optionally, the IMM also provides a virtual
presence capability for remote server management capabilities. The IMM provides remote server
management through the following industry-standard interfaces:
.
Chapter 4
Troubleshooting
57
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Table of Contents
Troubleshooting
