IBM QS22 - BladeCenter - 0793 Service Manual page 79

Table 5. System board LEDs (continued)
LED Color
Temperature fault Yellow
NMI error (NMI) Yellow
CPU fail Yellow
System board Yellow
Light path diagnostics Green
Board
location Explanation
Light The blade server has exceeded
box the operational temperature range.
The NMI pinhole reset on the front
panel has been pressed.
One of the Cell BE processors has
failed.
A critical error has occurred in a
component on the system board.
Lights when the light path
diagnostics switch is pressed.
Indicates that the capacitor is
charged and the light path LEDs
can light to show any errors.
Comments
v Using the Advanced
Management Module,
check that the
BladeCenter unit cooling
system is operating
correctly.
v Replace any missing filler
blades in the BladeCenter
unit.
v Replace any missing
DIMM fillers in the
BladeCenter QS22 I/O
buffer DIMM slots.
v Check that other blade
servers are operating
within the recommended
temperature range.
v Replace the blade server,
power on and boot. Check
Advanced Management
Module for errors.
If the problem persists,
contact your IBM service
representative as the system
board may need servicing.
Pressing the reset causes
the operating system to call
the system debugger.
Contact your IBM service
representative as the system
board needs replacement.
Contact your IBM service
representative as the system
board may need replacing.
If this LED does not light
then the light path LEDs
cannot function.
Reinstall the blade server in
the BladeCenter unit and
power on to recharge.
If this fails to resolve the
problem, there is a problem
with the system board and it
may need replacement.
Chapter 5. Diagnostics and troubleshooting
61