Alienware Area-51 R4 Service Manual

Procedure

NOTE: Note the routing of all cables as you remove them so that you can route them correctly after you replace the power-supply unit.

Lay the chassis on the right side.
Press the release tabs on the power cables and disconnect all the cables from the power-supply unit.
Remove the four screws (#6-32x6) that secure the power-supply unit to the back of the chassis.
Figure 1. Removing the power-supply unit
1. power cable
2. power-supply unit
3. screws (4)
Lift the power-supply unit cover away from the chassis.
Figure 2. Removing the power-supply unit
1. power-supply unit
2. power-supply unit cover
Slide the power-supply unit out through the back of the chassis and remove it from the computer.
Figure 3. Removing the power-supply unit
1. chassis
2. power-supply unit
Slide and remove the metal bracket from the power-supply unit.