Note:
See “System” on page 156 to determine which components should be replaced by a field service technician.
Diagnostics panel LED
FRU/action
CPU LED on
(The LED next to the
failing CPU is on.)
1.
Microprocessor 1 or 2
2. System board
PCI BUS LED on
1.
Remove all PCI adapters from slots on affected bus (see “LEDs for
Active PCI slots” on page 32 for bus information, see “Adapter
considerations” on page 57).
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. SCSI backplane.
SERVICE PROCESSOR BUS LED
1.
Unplug the server for 30 seconds, and then retry.
2. Reflash or update firmware for ISMP, BIOS.
3. System board.
POWER SUPPLY 1 LED on
1.
Check the dc good LED on power supply 1. If it is off, replace power
supply 1.
2. Power cage assembly, if installed.
POWER SUPPLY 2 LED on
1.
Check the dc good LED on power supply 2. If it is off, replace power
supply 2.
2. Power cage assembly, if installed.
NONREDUNDANT LED on
1.
Check the PS1 and PS2 LEDs and replace any indicated power supply.
2. Install an additional power supply or remove optional devices from the
server.
NMI LED on
1.
Restart the server.
2. Check the System Error Log.
TEMPERATURE LED on
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
v
Information LED panel
b. DASD over recommended temperature (DASD LED also on)
1) Overheating hard drive
2) DASD backplane
c. System over recommended temperature for CPU
x
(where
x
is 1 or 2)
(CPU LED is also on)
1) CPU
x
2) System board
4. If the CPU LED on the diagnostics panel is also lit, one of the
microprocessors has caused the error.
Chapter 6. Symptom-to-FRU index
129
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