User guide

Chapter 2 Components
> 2.1 3.5" Type Controller Enclosure
ETERNUS DX60/DX80/DX90 Disk storage system User Guide
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P3AM-3042-06ENZ0
■ Power supply unit
Figure 2.10 shows the power supply unit.
Figure 2.10 Power supply unit (3.5" type controller enclosure)
Each power supply unit has two internal cooling fans.
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• Each enclosure has two power supply units (PSU#0 and PSU#1). The
power cords must be connected to the inlets of both power supply units.
• Power cords should not be reconnected immediately after being
disconnected. Always wait for the power supply unit's STATUS LED to
completely turn off (about 10 seconds) before reconnecting a
disconnected power cord.
STATUS LED
Blinks green ( ) when AC power is supplied (power cord is connected)
but DC power is turned off.
Glows green ( ) when AC power is supplied (power cord is connected)
and DC power is turned on.
Glows orange ( ) to indicate a fault has been detected in a fan
or power supply.
Inlet
Power cord connects here.