Silicon Graphics InfiniteStorage 6120, User Manual

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The InfiniteStorage 6120 System Hardware
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1.2.3 Power Cooling Module (PCM)
Installed in the rear of the chassis
(Figure 5)
are two (2) power cooling modules.
The InfiniteStorage 6120 must always be operated with two PCM installed. Module replacement
should only take a few minutes to perform but must be completed with 10 minutes from removal of
the failed module. Four (4) LEDs mounted on the PCM indicate the status of the module and the fans
(Figure 6)
. Figure 7 provides a description of the color and status of the LEDs.
Figure 7. PCM LED Description
LED Description Color Status
PCM AC Green
ON - AC input to PCM within tolerances
OFF - PCM failed
PCM DC Green
ON - DC output of PCM within tolerances
OFF - PCM failed
PCM Fault Amber
ON - PCM fault detected
OFF - no detected PCM faults
PCM ID Blue
ON - receiving SES identify command
OFF - NOT receiving SES identify command
Figure 5. Power Cooling Module
Power Switch
Power Cord Connector
Figure 6. Power Cooling Module LEDs
Normal Operation LEDs Faults LEDs