Chapter 2 Components
2.1 Controller Enclosure
ETERNUS DX80 S2/DX90 S2 Disk storage system User’s Guide -Installation-
Copyright 2013 FUJITSU LIMITED P3AM-4832-07ENZ0
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2.1.4.2 Power Supply Units
The power supply unit transforms input AC power from a power socket to DC power and supplies power to each
component.
Power supply units and fan units are installed in the rear.
Figure 2.16 Power supply unit
● Part explanation
• Inlet
This inlet is used to connect a power cord.
• PSU switch
This switch is used to turn on and off the AC power supply.
• LEDs
The states of LEDs are listed below.
Table 2.4 Status and meanings of each LED (power supply unit)
LED name Power supply unit status
POWER PSU FAIL AC MISSING FAN FAIL
(blinks green)
(off) (off) (off)
AC power is supplied to the power
supply unit but the ETERNUS DX Disk
storage system (DC power) is not
turned on.
(green)
(off) (off) (off)
The power of the ETERNUS DX Disk
storage system (DC power) is turned
on and the power supply unit is
operating normally.
(off) (off) (off) (off)
AC power is not supplied to power sup-
ply units
(off) (amber) (amber) (off or amber)
AC power is not supplied to this power
supply unit, but AC power is supplied
to the other power supply unit.
(off) (amber) (amber) (amber)
The power supply unit or the fan in the
power supply unit is in error status.
Inlet
PSU switch
AC MISSING LED
PSU FAIL LED
POWER LED
FAN FAIL LED
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