Replacing The Power Supply - Dell OptiPlex 740 User Manual

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Dell™ Optiplex™ 740 Systems
User's Guide
Power Supply
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
2. Disconnect the DC power cables from the system board and the drives.
Note the routing of the DC power cables underneath the tabs in the computer chassis as you remove them from the system board and drives. You must
route these cables properly when you replace them to prevent them from being pinched or crimped.
3. Remove the four screws that attach the power supply to the back of the computer chassis.
4. Press the release button located on the floor of the computer chassis.
1 release button
4 AC power connector
5. Slide the power supply toward the front of the computer by approximately 1 inch.
6. Lift the power supply up and out of the computer.
7. Slide the replacement power supply into place.
8. Replace the screws that secure the power supply to the back of the computer chassis.
NOTICE: Route the DC power cables under the chassis tabs. The cables must be properly routed to prevent the cables from being damaged.
Begin.
2 power supply 3 screws (4)