Lenovo NeXtScale nx360 M5, Installation And Service Manual, Page: 67 / 1022

Performing the checkout procedure
Use this information to perform the checkout procedure.
To perform the checkout procedure, complete the following steps:
Step 1. Is the server part of a cluster?
• No: Go to step Step 2 on page 53.
• Yes: Shut down all failing servers that are related to the cluster. Go to step Step 2 on page 53.
Step 2. Complete the following steps:
a. Check the power supply LEDs (see “Power-supply LEDs” on page 55).
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 63.
h. Check the system-error LED on the operator information panel. If it is lit, check the light path
diagnostics LEDs (see “Compute node controls, connectors, and LEDs” on page 18).
i. Check for the following results:
• Successful completion of POST (see “POST” on page 60 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 63; if necessary, see
“Solving undetermined problems” on page 77.
• Yes: Run DSA (see “Running DSA Preboot diagnostic programs” on page 61).
– If DSA reports an error, follow the instructions in Appendix C “DSA diagnostic test results” on
page 829.
– If DSA does not report an error but you still suspect a problem, see “Solving undetermined
problems” on page 77.
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 58 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
Chapter 3
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Troubleshooting
53