Dell Alienware Area-51 R4 Service Manual - Page 81

Removing the power-supply unit, Prerequisites, Procedure

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Removing the power-supply unit NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the steps in Before working inside your computer. After working inside your computer, follow the instructions in After working inside your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.com/ regulatory_compliance. Prerequisites 1. Remove the stability foot. 2. Remove the left and right side-panels. See "Removing the side panels". 3. Remove the multiple graphics cards or full length graphics cards. Procedure NOTE: Note the routing of all cables as you remove them so that you can route them correctly after you replace the powersupply unit. 1. Lay the chassis on the right side. 2. Press the release tabs on the power cables and disconnect all the cables from the power-supply unit. 3. Remove the four screws (#6-32x6) that secure the power-supply unit to the back of the chassis. a. power cable b. power-supply unit c. screws (4) 4. Lift the power-supply unit cover away from the chassis. 81

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Removing the power-supply unit
NOTE: Before working inside your computer, read the safety information that shipped with your computer and follow the
steps in
Before working inside your computer
. After working inside your computer, follow the instructions in
After working
inside your computer
. For more safety best practices, see the Regulatory Compliance home page at
www.dell.com/
regulatory_compliance
.
Prerequisites
1.
Remove the
stability foot
.
2.
Remove the left and right side-panels. See “
Removing the side panels
”.
3.
Remove the
multiple graphics cards
or
full length graphics cards
.
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.
1.
Lay the chassis on the right side.
2.
Press the release tabs on the power cables and disconnect all the cables from the power-supply unit.
3.
Remove the four screws (#6-32x6) that secure the power-supply unit to the back of the chassis.
a.
power cable
b.
power-supply unit
c.
screws (4)
4.
Lift the power-supply unit cover away from the chassis.
81