Troubleshooting 31
• See the server LEDs and their status.
Health LED Behavior:
• Critical issues
o CPU initial failed
o Memory initial failed
o Fan failure or missing
o Memory uncorrectable ECC
• Non-critical issues
o Voltage fault
o Temperature fault
Preparing the server for diagnosis
1. Be sure the server is in the proper operating environment with adequate power, air conditioning,
and humidity control. Refer to the server documentation for required environmental conditions.
2. Record any error messages displayed by the system.
3. Remove all diskettes and CDs from the media drives.
4. Power down the server and peripheral devices if you will be diagnosing the server offline. Always
perform an orderly shutdown, if possible. This means you must:
a. Exit any applications.
b. Exit the operating system.
c. Power down the server (on page 6).
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