Diagnostic Tools - Lenovo 3633 Installation And Service Manual

• Yes: Shut down all failing servers that are related to the cluster. Go to
Step 2. Do the following:
a. Check the power supply LEDs. See
b. Turn off the server and all external devices.
c. Check all internal and external devices for compatibility at
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
h. Check the system-error LED on the operator information panel. If it is lit, check the light path
diagnostics LEDs. See
i. Check for the following results:
• Successful completion of the POST (see
• 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
"Solving undetermined problems" on page
• Yes: Run DSA. See
– If DSA reports an error, follow the instructions in
page 461.
– If DSA does not report an error but you still suspect a problem, see
problems" on page

Diagnostic tools

The following tools are available to help you diagnose and solve hardware-related problems.
• Light path diagnostics
Use light path diagnostics to diagnose system errors quickly. For more information, see
diagnostics" on page
• Event logs
The event logs list the error codes and messages that are generated when an error is detected. For more
information, see "Event logs" on page
• Integrated Management Module 2.1 (IMM2.1)
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 IMM2.1 provides advanced
service-processor control, monitoring, and alerting function. If an environmental condition exceeds a
threshold or if a system component fails, the IMM2.1 lights LEDs to help you diagnose the problem,
records the error in the IMM2.1 event log, and alerts you to the problem. Optionally, the IMM2.1 also
provides a virtual presence capability for remote server management capabilities. The IMM2.1 provides
remote server management through the following industry-standard interfaces:
– Intelligent Platform Management Protocol (IPMI) version 2.0
– Simple Network Management Protocol (SNMP) version 3
.
"Light path diagnostics" on page
"Troubleshooting by symptom" on page
"Running DSA Preboot diagnostic program" on page
71.
51.
54.
"Power-supply LEDs" on page
http://www.lenovo.com/
"Troubleshooting by symptom" on page
51.
"POST" on page
71.
Appendix C "DSA diagnostic test results" on
Step 3 on page 49.
52.
56)
59; if necessary, see
57.
"Solving undetermined
"Light path
.
Chapter 5 Troubleshooting
59.
49