System Board Led Locations - IBM xSeries 150 User Reference Manual

System board LED locations

The following illustration identifies system-board LEDs. You might need to refer to
this figure when troubleshooting a problem.
Note:
DIMM 4
failure (CR20)
DIMM 3
failure (CR18)
DIMM 2
failure (CR28)
DIMM 1
failure (CR21)
Power-on
indicator (CR56)
Advanced System
Management Processor
error (CR70)
Note:
Diagnostics panel LEDs:
PS1
PS2
PS3
NON
OVER Overspec. The system has exceeded the power capabilities of the installed
NMI
TEMP System temperature exceeded maximum rating.
FAN
MEM Memory failure. One or more memory DIMMS have failed.
CPU
PCI A Error on PCI channel A or system board.
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IBM® xSeries 150 : User's Reference
The illustrations in this document might differ slightly from your hardware.
The power-on indicator (CR56) lights when system power is present in the
server. When this light flashes, the server is in standby mode (the system
power supply is turned off and current is present).
Power supply 1 failure.
Power supply 2 failure.
Power supply 3 failure.
Non-redundant power.
power supply units.
Non-maskable-interrupt occurred.
A fan failed or is operating slowly.
Microprocessor failure. One or both microprocessors have failed.
Microprocessor 2
failure (CR7)
Microprocessor 1
failure (CR1)
Voltage regulator module
(VRM2) failure (CR16)
Integrated voltage regulator
(VRM1) failure (CR4)
Diagnostics panel