IBM 8480 - Eserver xSeries 205, Руководство по техническому обслуживанию и устранению неисправностей, Страница: 98 / 174

Note: See “System” on page 112 to determine which components should be replaced by a field service technician.
No-beep symptom FRU/action
No beep, no video, and the
system attention LED is on.
v See “Diagnostic panel system error LED.”
BIST failed.
v
Microprocessor
Diagnostic panel system error LED
The system-error LED is lit when an error is detected. If the system-error LED is lit,
remove the cover and check the diagnostic panel LEDs. The following table is a
complete list of diagnostics panel LEDs followed by the FRU or action for correcting
the problem. The information in the table is valid only when the system-error LED is
lit.
Notes:
1. If a diagnostics panel LED is lit and the information LED panel system-error
LED is off, there is probably an LED problem. Run LED diagnostics.
2. Check the System Error Log for additional information before replacing a FRU.
3. The DIMM error LEDs, microprocessor error LEDs, and VRM error LEDs turn
off when the system is turned off.
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.
FAN LED on. (The LED next to the
failing DIMM is on.)
1. Failing fan.
2. System board.
MEMORY LED on. (The LED next
to the failing DIMM is on.)
1. Failing DIMM.
2. System board.
CPU LED on. (The LED next to the
failing CPU is on.)
1. Run the Configuration/Setup Utility program to verify that all
microprocessors have identical cache sizes, dock speeds and clock
frequencies.
2. Microprocessor 1 or 2.
3. System board.
PCI BUS LED on.
1. Remove all PCI adapters from slots on affected bus.
2. System board.
VRM LED on. (The LED next to
the failing VRM is on.)
1. Voltage regulator module indicated by the lit VRM LED.
2. Microprocessor indicated by the microprocessor LED.
DASD LED on (The LED located
next to the drive bay that the failing
drive is installed in is lit. Check the
amber drive LED for the failing hard
drive.)
1. Be sure the fans are operating correctly and the airflow is good.
2. If installed, reseat I2C cable between DASD backplane and DASD I2C on
the system board (J10).
3. Failing drive. SCSI channel A has failed. (This is the SCSI channel for the
hot-swap hard disk drives).
4. DASD backplane.
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IBM xSeries 205 Type 8480: Hardware Maintenance Manual and Troubleshooting Guide