Chapter 5
Troubleshooting
Troubleshooting Using LED Indicators
76
QuickFind Diagnostic Panel LEDs
The QuickFind diagnostic panel is located under the top cover and is attached to the top of the power supply
cage. The following definitions describe the status of the various LEDs and what is wrong with the indicated
component.
Table 5-2 QuickFind Diagnostic Panel LED Definitions
Item LED 0 LED 1 LED 2 LED3 Details
Processor Socket 0 Socket
1
Socket
2
Socket
3
If the System LED (on front panel) is in the
attention or fault state and the processor
LED is on, then the processor or voltage
regulator has failed—the processor module
in the specified socket needs to be replaced.
If the thermal LED is in the warning or
critical state and the processor LED is on,
then the processor exceeded the warning or
critical level.
Subsystem CPU
board
Memory
board
I/O
board
n/a A soldered voltage regulator has failed—the
specified board must be replaced.
I/O VRM 12 volt 5 volt 3 volt n/a A plug-in voltage regulator has
failed—specific VRM must be replaced.
CPU VRM n/a n/a n/a n/a n/a
Fan Module 0 1 2 n/a One or both fans in a fan module have
failed—the module must be replaced.
Fan 2 is in front of the power supplies.
Memory
Bank X (0-7)
DIMM
xA
DIMM
xB
DIMM
xC
DIMM
xD
The specified DIMM has failed—the DIMM
must be replaced.
If all the LEDs for a rank (0-7) are lit and
the memory config error LED is lit, then the
DIMMs in the specified rank are
mismatched—replace mismatched DIMM.
Check Power
Supply
n/a n/a n/a One of the power supply or power supply
fans have failed—replace the power supply.
The faulty power supply LED (located on
Power supply) will be lit.
Memory
Config Error
n/a n/a n/a The DIMMs in a rank are mismatched. All
the DIMMs in the specified rank (0-7) will
be lit.
Processor
Config Error
n/a n/a n/a The processors are mismatched—replace
mismatched processor.
Missing
Component
n/a n/a n/a A required component(s) is not installed in
the system and thus preventing “power-up.”
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