Diagnostic Tools - Lenovo System x3550 M5 Installation And Service Manual

Step 1. Is the server part of a cluster?
• No: Go to Step 2.
• Yes: Shut down all failing servers that are related to the cluster. Go to Step 2.
Step 2. Complete the following steps:
a. Check the power supply LEDs (see "Power-supply LEDs" on page 60).
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 70.
h. Check the system-error LED on the operator information panel or LCD operating panel
assembly (see "Operator information panel" on page 19 or "LCD operating panel assembly" on
page 19).
i. Check for the following results:
• Successful completion of POST (see "POST" on page 67 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 70; if necessary, see
"Solving undetermined problems" on page 89.
• Yes: Run DSA (see "Running the DSA Preboot diagnostic programs" on page 68).
– If DSA reports an error, follow the instructions in Appendix C "DSA diagnostic test results" on
page 949.
– If DSA does not report an error but you still suspect a problem, see "Solving undetermined
problems" on page 89.

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. See "Light path diagnostics" on page 59
for more information.
• 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 64 for more information.
• Integrated management module II
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
.
Chapter 3 Troubleshooting
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