Power Supply; Replacing The Power Supply - Dell OptiPlex 755 User Manual

Power Supply

Replacing the Power Supply

CAUTION:
Before you begin any of the procedures in this section, follow the safety instructions located in the
Product Information Guide
NOTICE:
To prevent static damage to components inside your computer, discharge static electricity from your
body before you touch any of your computer's electronic components. You can do so by touching an unpainted
metal surface on the computer chassis.
1 Follow the procedures in "Before You Begin" on page 21.
2 Remove the computer cover (see "Removing the Computer Cover" on page 168).
3 If installed, remove the optical drive (see "Removing an Optical Drive" on page 204).
4 If installed, remove the floppy drive or media card reader (see "Floppy Drive" on page 206).
5 Disconnect the DC power cables from the system board and the drives.
NOTE:
Remember the routing of the DC power cables underneath the tabs in the computer frame as you
remove them from the system board and drives. You must route these cables properly when you replace them
to prevent their being pinched or crimped.
6 Remove the three screws that attach the power supply to the computer chassis.
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Power Supply