Dell OptiPlex GXa Service Manual

Also see for OptiPlex GXa: Reference and installation guide Documentation update Reference and installation guide Service manual

Contents

Removing and Replacing Parts on the Net PC Chassis 7-7System Power SupplyFigure 7-6. System Power-Supply RemovalTo remove the system power supply, follow these steps:1. Disconnect the AC power cable from the back of the computer.2. Disconnect the DC power cables from the system board (see Figure 7-7)and the hard-disk drive.3. Remove the expansion-card cage.4. Remove the EIDE cable from the tabs on the power supply.5. Remove the screw securing the AC power receptacle to the back of thechassis, and lift the connector away from the chassis.6. Rotate the top of the system power supply back until it clears the reten-tion tab; then lift the power supply from the chassis.When you reinstall the system power supply, place it in front of the two tabs onthe bottom of the chassis. Then rotate the power supply toward the front of thechassis until the retention tab snaps into place. Route the EIDE cable under thecable tabs on the power supply before reinstalling the expansion-card cage.power supply power-supplyretention tabchassis tabs (2)hard-disk driveDC power cablesystem-boardDC powercables (2)AC power receptaclescrewEIDE cablecable tabs (2)