NOTICE: Before disconnecting a device from the computer, wait 10 to 20
seconds after disconnecting the computer from its electrical outlet. Before
removing a component from the system board, verify that the standby power
light on the system board has turned off. To locate this light, see "System
Board Components."
Turn off the computer and devices, disconnect them from their
electrical outlets, wait 10 to 20 seconds, lay the computer on its side,
and open the computer cover.
Disconnect the AC power cable from the back of the power supply.
Disconnect the DC power cables from the system board and the
drives.
Note the routing of the DC power cables underneath the clips in the computer as you remove them from the system board and drives. It is important to route these cables properly when you replace them to prevent them from being pinched or crimped.
On the small desktop computer, remove the expansion-card cage and
remove the power cables from the side of the hard drive. To remove
the power cables, use the cables as leverage and pull away from the
clips while simultaneously pulling on the metal clips with your fingers.
On the mini-tower computer, remove the two screws that secure the
power supply.
Press the push button.
Slide the power supply toward the front of the computer
approximately 1 inch.
