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Power Supply Light
Power Supply light is lit by a signal in the power supply called Power_Good (PG). When the +3.3 V, +5 V,
and +12 Vrails are up and within spec, the PG signal turns on, lighting the self-test LED. By removing the
cable harness in units that do not pass this test, the customer or technician can isolate the failure's cause
to an attached device of the power supply.
NOTE: If the Power Supply Light is not turned on, the power supply is defective.
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