Dell Dimension 4590T Service Manual - Page 39
Replacing the Lighting Board, Removing the Right-Side Middle Panel
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1 lighting board 2 screws (3) Replacing the Lighting Board 1. Follow the instructions in Before You Begin. 2. Route the lighting-board cable through the slot on the computer. 3. Connect the lighting-board cable to the connector on the master I/O board. 4. Align the screw holes on the lighting board with the screw holes on the right-side middle panel. 5. Replace the three screws that secure the lighting board to the right-side middle panel. 6. Replace the right-side top panel (see Replacing the Right-Side Top Panel). CAUTION: Before turning on the computer, replace all screws and ensure that no stray screws remain inside the computer. Failure to do so may result in damage to the computer. 7. Connect your computer and all attached devices to electrical outlets, and turn them on. Removing the Right-Side Middle Panel 1. Follow the instructions in Before You Begin. 2. Remove the right-side top panel (see Removing the Right-Side Top Panel). 3. Remove the lighting board (see Removing the Lighting Board). 4. Remove the two screws that secure the right-side middle panel to the chassis. 5. Lift the right-side middle panel up and away from the chassis.