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Chapter 5
Troubleshooting
Troubleshooting Using LED Indicators
163
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.
NOTE LED behavior is based on firmware. For changes in LED behavior, see your server firmware
release notes.
Table 5-4 lists the QuickFind diagnostic panel LED definitions.
Table 5-4 QuickFind Diagnostic Panel LED Definitions
Item LED 0 LED 1 LED 2 LED 3 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 n/a n/a n/a n/a n/a
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 supplies or power supply fans
have failed—replace the power supply. The
faulty power supply LED (located on power
supply) lights
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) lights
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
System
temp
n/a n/a n/a The internal temperature of the server has
exceeded the warning or critical level
Check event
log
n/a n/a n/a An event has occurred that requires attention