IBM 8686 - Eserver xSeries 360 Hardware Maintenance Manual page 129

Level 2 light path LED
PS1 LED on
PS2 LED on
PS3 LED on
OVER TEMP LED on (temperature
too high)
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.
See Log (non optimal condition)
NMI (nonmaskable interrupt)
Note: A PCI or MEM LED may
also be on.
FRU/Action
1. Power Supply 1
2. Power Backplane
3. System Board
1. Power Supply 2
2. Power Backplane
3. System Board
1. Power Supply 3
2. Power Backplane
3. System Board
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
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
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
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.
119
Symptom-to-FRU index