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Dell PS4100 ハードウェア・メンテナンス・マニュアル
PS4100 Hardware Maintenance Guide
Item LED
Color
1
DC
Green
power
Amber
2
Fault
3
AC
Green
power
Under normal conditions, the AC and DC power LEDs will be lit at the same time.

Removing a Power Supply and Cooling Module

If a power supply and cooling module fails, you must replace the module as soon as possible, although an
array can operate with only one working module. For proper array cooling, do not remove a failed module
until you are ready to replace it.
Caution
You can remove a power supply and cooling module from an array without affecting
array operation if the second module is installed and functioning. However, to
maintain proper air flow in the array, a power and cooling module must be
replaced within five (5) minutes of removing it. Otherwise, if possible, cleanly shut
down the array before removing the module, as described in
Restarting an Array on page
Wear electrostatic protection when handling a power supply and cooling module. See
on page
1.
To remove a power supply and cooling module:
1. Turn off the power switches on the power supply and cooling module.
2. Disengage the hook-and-loop fastener from around the power cable.
3. Remove the power cable.
4. With your right hand, hold the handle and push the orange release latch to the right with your thumb.
30
Table 7 Power Supply LED Descriptions
State
ON—Normal operation. Power supply is connected to AC power and the power
switch is on. The power supply module is supplying DC power to the array.
OFF when any of these is true:
• The power switch is off
• The power supply is not connected to AC power
• There is a fault condition
For a list of warning or critical level faults, see the Group Administration manual.
On—Fault detected.
OFF—OK.
Blinks briefly when power is first turned on to the power supply module.
For a list of warning or critical level faults, see the Group Administration manual.
ON—Power supply module is connected to a source of AC power whether or not
the power switch is on.
OFF—Power supply module is completely disconnected from any source of AC
power.
5.
Maintaining Power Supply and Cooling Modules
Shutting Down and
Protecting Hardware