Dell OptiPlex 5090 Tower Service Manual - Page 50
Power-supply unit, Removing the power-supply unit
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Steps 1. Insert the power-button cable into the slot from the front-side of the computer, and press the power-button head until it clicks into the place in the chassis. 2. Align and connect the power-button cable to the connector on the system board. 3. Replace the two (#6x32) screws that secures the front I/O bracket to the system chassis. Next steps 1. Install the 3.5-inch hard-disk drive assembly. 2. Install the front bezel. 3. Install the side cover. 4. Follow the procedure in after working inside your computer. Power-supply unit Removing the power-supply unit Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the fan duct. 4. Remove the 3.5-inch hard-disk drive assembly. NOTE: Note the routing of all cables as you remove them so that you can route them correctly while you are replacing the power-supply unit. 50 Removing and installing components
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