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Dell™OptiPlex™745User'sGuide
Power Supply
Power Supply
Replacing the Power Supply
1. Follow the procedures in Before You Begin.
2. Remove the three screws that attach the power supply to the computer chassis.
3. 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 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.
4. Slide the power supply toward the front of the computer approximately 1 inch.
5. Lift the power supply up and out of the computer.
6. Slide the replacement power supply into place.
7. Reconnect the DC power cables.
8. Connect the AC power cable to the connector.
9. Close the computer cover.
10. Connect your computer and devices to electrical outlets, and turn them on.
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
power supply
2
screw
NOTICE: To connect a network cable, first plug the cable into the network wall jack and then plug it into the computer.