Switching On And Off The Psu Switch On The Power Supply Unit; Figure 57 On Position (Marked "|") Of The Psu Switch On A Power Supply Unit - Fujitsu ETERNUS DX500 S4 Operation Manual

2. Basic Operation
Powering On and Off

Switching On and Off the PSU Switch on the Power Supply Unit

This section explains how to move the PSU switch of the power supply unit of the drive enclosures (2.5" type/3.5"
type) to the ON and OFF positions in each enclosure. Note that power supply units for controller enclosures and
high-density drive enclosures do not have PSU switches.
■
To Switch to ON
Turn the PSU switch of the power supply unit to the ON position (marked "|").
Make sure all of the PSU switches are in the ON position.

Figure 57 ON Position (Marked "|") of the PSU Switch on a Power Supply Unit

Power supply unit (PSU#0)
AC power is supplied to an enclosure.
For the drive enclosure, the POWER LED on the power supply unit emits green lights and the fan revolves at high
speed for 30 seconds.
Drive enclosure
FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Operation Guide (Basic)
Power supply unit (PSU#1)
Power supply unit (PSU#0)
POWER
LED
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Power supply unit (PSU#1)
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P3AM-7742-12ENZ0