IBM QS21 - BladeCenter - 0792 Service Manual page 74

Table 4. System board LEDs (continued)
LED Color
Temperature fault Yellow
NMI error Yellow
CPU fail Yellow
System board Yellow
Light path Green
diagnostics
56
BladeCenter QS21 Type 0792: Problem Determination and Service Guide
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 filler
blades in the BladeCenter
QS21 DIMM sockets.
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.