IBM xSeries 205 Type 8480 Hardware Maintenance Manual And Troubleshooting Manual page 98

Note: See "System" on page 110 to determine which components should be replaced by a field service technician.
Diagnostics panel LED
FAN LED on. (The LED next to the
failing DIMM is on.)
MEMORY LED on. (The LED next
to the failing DIMM is on.)
CPU LED on. (The LED next to the
failing CPU is on.)
PCI BUS LED on.
VRM LED on. (The LED next to
the failing VRM is on.)
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.)
SERVICE PROCESSOR BUS
LED.
POWER SUPPLY 1 LED on.
POWER SUPPLY 2 LED on.
NONREDUNDANT LED on.
NMI LED on.
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IBM xSeries 205 Type 8480: Hardware Maintenance Manual and Troubleshooting Guide
FRU/action
1. Failing fan.
2. System board.
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.
1. Remove all PCI adapters from slots on affected bus.
2. System board.
1. Voltage regulator module indicated by the lit VRM LED.
2. Microprocessor indicated by the microprocessor LED.
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.
1. Unplug the server for 30 seconds, and then retry.
2. Reflash or update firmware for ISMP, BIOS.
3. System board.
1. Check the dc good LED on power supply 1. If it is off, replace power
supply 1.
2. Power cage assembly, if installed.
1. Check the dc good LED on power supply 2. If it is off, replace power
supply 2.
2. Power cage assembly, if installed.
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.
1. Restart the server.
2. Check the System Error Log.