Removing the Power-Supply UnitWARNING: Before working inside your computer, read the safety information that shipped withyour computer and follow the steps in Before Working Inside Your Computer. After workinginside your computer, follow the instructions in After Working Inside Your Computer. For moresafety best practices, see the Regulatory Compliance home page at dell.com/regulatory_compliance.Prerequisites1. Remove the stand assembly.2. Remove the back cover.3. Remove the system-board shield.4. Remove the VESA-mount bracket.5. Remove the power-supply diagnostic board.6. Remove the I/O bracket.Procedure1. Disconnect the main power cable, processor power cable and power-supply fan cable from thesystem board.2. Remove the main power cable, processor power cable and power-supply fan cable from the routingguides on the display-panel base.3. Remove the power-port cable from the routing guides on the display-panel base.4. Disconnect the power-supply fan cable from the power-supply unit.1. power-port cable 2. processor power cable3. power-supply fan cable 4. main power cable5. power-supply fan cable5. Remove the screw that secures the power-supply unit to the display-panel base.42
