Level 2 Lightpath LED errors - IBM eServer xSeries 360

All LEDs off (error log full)

NOTE: "See Log" LED may be lit.

1. System Error Log is 75% full; clear the log.
2. PFA alert; check error log for failure; clear PFA alert; remove AC power for at least 20 seconds, reconnect, then power up system.
3. Run diagnostics.

CPU LED on (failed processor)

NOTE: Verify correct installation sequence; see "Microprocessor installation" in the Hardware Maintenance Manual (HMM).

1. Processor 1 - 4
2. System board

1. VRM 1-4
   NOTE: If all 4 VRM LEDs are on, replace all 4 VRMs.
2. System board

DASD LED on (hot-swap hard drive failure)

NOTE: If RAID system, refer to the HMM for the specific RAID adapter.

1. Run diagnostics
2. Failing drive (reseat/replace).
3. Be sure the fans are operating correctly and the air flow is good.
4. SCSI backplane.

FAN LED on (fan failure)

NOTE: A failing fan can also cause the TEMP and DASD LEDs to be on.

1. Check individual fan LEDs.
2. Replace respective fan.
3. System board.

1. Check DIMM error LED on memory board
   NOTE: If there is a DIMM failure, an LED on the memory board indicates the failing DIMM. If LED is not visible with the memory board in its slot, remove memory board and press the button on the board to light the failing DIMM's LED.
2. DIMM
3. Memory board
4. System board

1. Check the System Error Log
2. Failing adapter
3. System board

1. Power supply 1
2. Power backplane
3. System board

PS2 LED on

1. Power supply 2
2. Power backplane
3. System board

1. Power supply 3
2. Power backplane
3. System board

OVER TEMP LED on

(temperature too high)

1. If a fan LED is on, replace the fan.
2. Ambient temperature must be within normal operating specifications. See Table 1 on page 4.
3. Examine System Error Log.

   a. System over recommended temperature
   b. Operator Information Panel
   c. DASD over recommended temperature

4. 1) Overheating hard drive
   2) DASD backplane
   3) System board

   d. System over recommended temperature for processor X (where X is processor number) (processor LED also on)

   1) Processor X
   2) System board

   e. Power Supply fault / over temp

   1) Failing power supply

EXP (device in remote expansion I/O has failed)

NOTES:

1. If the amber status LED is on for a device in the remote expansion I/O indicates a problem, replace the device.
2. Check server error log for indications of a failure in a device installed in the remote expansion I/O or in the expansion I/O itself. If the log indicates a problem in the expansion I/O, see the problem solving information in the expansion I/O documentation.

1. Check System Error Log (if log indicates a temperature problem and fans are working correctly, check for air flow blockage)
2. Check light path on expansion box
3. Replace indicated device

1. See System Error Log
2. See Service Processor log

NMI (nonmaskable interrupt)

NOTE: A PCI or MEM LED may also be on.

1. See System Error Log
2. If a PCI LED is on, follow the instructions for that LED.
3. If MEM LED is on, follow the instructions for that LED.
4. Restart the server.

1. See System Error Log
2. Remote Supervisor Adapter card (reseat/replace)
3. System board

1. If PSX LED is lit on Level 2 Lightpath, follow instructions for hat LED.
2. Replace failing power supply
3. Add power supply

1. Add power supply