Dell PowerVault MD1120 - Manual (Page 37)

Installing Enclosure Components
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CAUTION:
The power supply/cooling fan modules are heavy. Use both hands
when removing.
3 Press the release tab inward and grasp the handle on the power supply,
carefully pulling the module out of the bay (see Figure 3-6).
NOTICE:
The power-supply handle is provided to ease the task of pulling the
module from the bay. Do not use this handle to carry the module, or use it to carry
the enclosure itself.
Installing a Power Supply/Cooling Fan Module
1 Carefully slide the new power supply/cooling fan module approximately
two-thirds of the way into the empty bay.
2 Gently push the module all the way to the back of the bay until it is firmly
seated in the backplane connector.
NOTE:
If the enclosure is powered on, all power supply LEDs (see Figure 1-7)
remain off until you connect the AC power cable to the power supply and turn
on the on/off switch.
3 Connect the AC power cable to the new power supply and to an electrical
outlet.
4 Turn on the on/off switch on the new power supply.
Removing and Installing the Control Panel
The control panel powers the LED indicators on the front panel of the
system, as well as the Enclosure Mode Selection switch. It is connected to the
backplane and cannot be removed or replaced unless the system is powered
down.
CAUTION:
Only trained service technicians are authorized to remove the system
cover and access any of the components inside the system. Before you begin this
procedure, review the safety instructions that came with the system.
Removing the Control Panel
1 Power down your host server.
2 Power down your enclosure.
3 Disconnect all power cables to the enclosure.