System-Board Led Locations - IBM BladeCanter HS20 Installation And User Manual

System-board LED locations

The following illustration shows the location of the LEDs on the system board. You
might need to refer to this illustration when solving problems with the blade server.
You need to remove the blade server from the BladeCenter unit, open the cover,
and press the Light Path Diagnostics button to light any error LEDs that were
turned on during processing.
Note: Power is available to relight the Light Path Diagnostics LEDs for a short
Processor 2
error LED (CR13)
NMI error
LED (CR17)
Temperature
error LED
(CR31)
System board
error LED
(CR30)
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BladeCenter HS20 Type 8832: Installation and User's Guide
period of time after the blade server is removed from the BladeCenter unit.
During that period of time, you can relight the Light Path Diagnostics LEDs
for a maximum of 25 seconds (or less, depending on the number of LEDs
that are lit and the length of time the blade server is removed from the
BladeCenter unit) by pressing the Light Path Diagnostics button. The Light
Path Diagnostics power present LED (CR111) lights when the Light Path
Diagnostics button is pressed if power is available to relight the blade-error
LEDs. If the Light Path Diagnostics power present LED does not light when
the Light Path Diagnostics button is pressed, no power is available to light
the blade-error LEDs and they will be unable to provide any diagnostic
information.
Processor mismatch
error LED (CR110)
Processor 1
error LED (CR12)
Light Path Diagnostics
power present
LED (CR111)
Reserved (SW3)
Light Path
Diagnostics button
(SW4)
IDE bus 1 error
LED (CR14)
IDE bus 2 error
LED (CR28)
DIMM 1 error
LED (CR3)
DIMM 2 error
LED (CR4)
DIMM 3 error
LED (CR5)
DIMM 4 error
LED (CR6)