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Power supplies
DANGER
Do not attempt to open the covers of the power supply. Power supplies are not serviceable and
are to be replaced as a unit. (D08)
This system drawer has power supplies that have hot-swap capabilities. To use this feature, you must
have two power supplies in place.
Before performing any of the following procedures, read and understand all of the safety notices beginning
with "Safety notices" on page xv.
Power supply removal
Before performing this procedure, read the following "Safety notices" on page xv.
Because the system has two power supplies, you can replace each power supply (one at a time) without
shutting down the system.
To remove a power supply, do the following:
Note: You do not need to turn off the power to the system to install power supplies.
1. Open the front and back rack doors and place the system into the service position as described in
"Placing the NAS Gateway 500 into the service position" on page 312.
2. Visually check the power supply LEDs. If the amber LED is lit, suspect that power supply to be faulty.
3. Remove the service access cover as described in "Service access cover removal" on page 314.
4. Remove the power cable from the back of the faulty power supply.
5. Wait at least 10 seconds before performing the next step.
6. Grasp the ends of both power supply handles, and slide the retractable spring-activated portion of
each handle toward its hinged base. This action releases the locking tab located on the bottom side of
each release handle. See the following illustration.
2
1
1 Power supply
2 Locking tab receiver hole
3 Retractable spring-activated portion of the handle
3
Chapter 11. Removal and replacement procedures
351
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