IBM 8676 - Eserver xSeries 335, Hardware Maintenance Manual And Troubleshooting Manual

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Note: See “System” on page 112 to determine which components should be replaced by a field service technician.
Diagnostics panel LED FRU/action
All LEDs off
(Check System Error Log for error
condition, then clear System Error
Log when the problem is found.)
1. System Error Log is 75% full; clear the log.
2. PFA alert; check log for failure; clear PFA alert; remove ac power for at least
20 seconds, reconnect, then turn on the system.
3. Run Light Path Diagnostics.
CPU (Microprocessor failure. The
LED next to the failing CPU is on.)
1. Failing microprocessor
2. System board
CNFG (The microprocessor or
microprocessor VRM configuration
is incorrect.)
1. Verify that microprocessors are compatible (see “Installing a
microprocessor” on page 52).
2. If only one microprocessor is installed, make sure it is located in socket
U82.
3. Verify that VRM is present if two microprocessors are installed.
4. Microprocessor.
5. VRM.
VRM LED on (A voltage regulator
module (VRM) failed. The LED next
to the failing VRM is on.)
1. Failing VRM
2. System board
MEM (System memory failed. The
LED next to the failing DIMM is on.)
1. Failing DIMM
2. System board
SP (Integrated system
management processor (ISMP)
failed.)
1. Unplug the server for 30 seconds, and then retry.
2. Reflash or update firmware for ISMP, BIOS.
3. System board.
PS (Power supply failed.)
1. Verify that fan near power supply has clear air flow, rerouting cables if
necessary.
2. Power supply.
3. System board.
TEMP (Temperature exceeded a
threshold level.)
1. Ambient temperature must be within normal operating specifications.
See “Features and specifications” on page 2.
2. Ensure fans are operating correctly.
3. Examine System Error Log.
a. System over recommended temperature
b. Power switch assembly
c. DASD over recommended temperature (DASD LED also on)
1) Overheating hard disk drive
2) DASD backplane
3) System board
d. System over recommended temperature for microprocessor x (where x
is 1 or 2) (CPU LED is also on)
1) Microprocessor x
2) System board
e. System board over recommended temperature
v System board
FAN (A fan failed or is operating
slowly.)
1. Check individual fan LEDs.
2. Replace respective fan.
3. System board.
Chapter 6. Symptom-to-FRU index
83