Power Supplies; Disk Tray Indicators; Table 9-3 Pcm Led Codes - Sun Microsystems Enterprise 3500 System Reference Manual

9.3.3

Power Supplies

There are several types of power supply modules, but all have two LEDs. The
locations of the green (Power) LED and the yellow (Service) LED vary according to
the module type.
9.3.3.1 Peripheral Power Supplies
The system has one peripheral power supply/AC unit (PPS/AC), located at the rear
of the cabinet.
The system may also have the optional auxiliary peripheral power supply (PPS),
located at the front of the cabinet. If the auxiliary PPS is not installed, the slot
contains a thermal protection module.
On both the PPS/AC and the PPS, the green Component Power LED is located
above the yellow Service LED. The Component Power LED is lit when the power
supply is operating, but does not necessarily indicate that the DC outputs are fully
within specification. The yellow Service LED is lit when a DC power output has
failed or a voltage level is out of specification.
9.3.3.2 Power/Cooling Modules
The system has up to three power/cooling modules (PCMs).
Each PCM has two LEDs. The green Component Power LED is located below the
yellow Service LED.
TABLE 9-3
Component Power
Off
On
On
Off
9.3.4

Disk Tray Indicators

The availability and type of status information varies with the disk tray type used in
a system. Refer to the disk tray user manual for specific status information.
9-6 Sun Enterprise 3500 System Reference Manual • August 2001
summarizes the LED codes for the PCM.
TABLE 9-3
PCM LED Codes
Service
Off
Off
On
On
Condition
No AC input.
Normal operation.
A fan has failed.
One or more DC outputs have failed or the voltages
are out of specification.