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• For intermittent problems, check the error log; see “Event logs” on page 17 and “Diagnostic programs
and messages” on page 64.
Performing 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 14
.
• Yes: Shut down all failing servers that are related to the cluster. Go to step Step 2 “” on page 14.
Step 2. Complete the following steps:
a. Check the power supply LEDs (see “Power-supply LEDs” on page 63).
b. Turn off the server and all external devices.
c. Check all internal and external devices for compatibility at http://www.lenovo.com/support.
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 tables” on page 46.
h. Check the system-error LED on the operator information panel. If it is ashing, check the LEDs
on the system board (see “System-board LEDs” on page 112).
i. Check for the following results:
• Successful completion of POST (see “POST” on page 19
for more information)
• Successful completion of startup
Diagnosing a problem
Before you contact Lenovo or an approved warranty service provider, follow these procedures in the order
in which they are presented to diagnose a problem with your server:
1. Determine what has changed.
Determine whether any of the following items were added, removed, replaced, or updated before the
problem occurred:
• Device drivers
• Server rmware
• Hardware components
• Software
If possible, return the server to the condition it was in before the problem occurred.
2. Collect data.
Thorough data collection is necessary for diagnosing hardware and software problems.
a. Document error codes and system-board LEDs.
• System error codes: See “POST error codes” on page 19
for information about a specic error
code.
• See “System-board LEDs” on page 112 for the location of the system-board LEDs.
• Software or operating-system error codes: See the documentation for the software or
operating system for information about a specic error code. See the manufacturer's Web site for
documentation.
14 Hardware Maintenance Manual