IBM xSeries 235, Maintenance & Troubleshooting

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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 server problems.
VRM 2 error LED (CR1)
VRM 1 error
LED (CR33)
CPU 2 error LED (CR4)
CPU 1 error
LED (CR24)
CPU mismatch error
LED (CR14)
Power error
LED (CR15)
DIMM 1 error
LED (CR16)
DIMM 2 error
LED (CR17)
DIMM 3 error
LED (CR18)
DIMM 4 error
LED (CR20)
DIMM 5 error
LED (CR22)
DIMM 6 error
LED (CR23)
Service processor
activity LED (CR67)
PCI bus A error
LED (CR66)
PCI-X bus B error
LED (CR68)
PCI-X bus C error
LED (CR76)
PCI-X slot 5 power
LED (CR75)
PCI-X slot 6 power
LED (CR79)
PCI-X slot 5 internal
attention LED (CR73)
PCI-X slot 6 internal
attention LED (CR78)
PCI-X slot 5 external
attention LED (CR74)
PCI-X slot 6 external
attention LED (CR77)
Chapter 4. Customer replaceable units
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