Supermicro 8042-6, User Manual

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S
UPER
S
ERVER 8042-8/8042-6 Manual
3-4
3-4 SCSI Drive Carrier LEDs
Each SCSI drive carrier has two LEDs.
!
Green:
When illuminated, the green LED on the front of the SCSI drive
carrier indicates drive activity. A connection to the SCSI SCA backplane
enables this LED to blink on and off when that particular drive is being
accessed.
!
Red:
When illuminated, the red LED on the front of the SCSI drive
carrier indicates the drive has experienced a fault or has crashed. Please
refer to Chapter 6 for instructions on replacing failed SCSI drives.
3-5 Power Supply LEDs
Each of the three separate power units that comprise the power supply has
a single LED that can be illuminated either as green or red.
!
Green:
When green, the power unit has power applied to it and is
operating normally.
!
Red:
A red LED is normal only when system power has been turned
off. If the LED is red, it indicates that either (1) no power is being applied
to that particular power unit or (2) that particular power unit has failed.
First check to make sure the power cord for that unit is plugged into both
the power unit and a grounded wall outlet/power strip. If the power cord is
properly connected, not, refer to Section 6-5 for instructions on replacing
the power supply unit.