Dell OptiPlex 7470 All-in-One Service Manual

Removing the power button board

1. Follow the procedure in Before working inside your computer.
2. Remove the following components:
   1. Stand
   2. Back cover
   3. System board shield
   4. Base cover
   5. I/O bracket
   6. Speakers
3. To remove the power button board:
   1. Open the latch, and disconnect the power button board cable from the system board [1].
   2. Peel off the power button board cable from the display assembly base [2].
   3. Remove the single screw (M3x5) that secures the power button board to the middle frame [3].
   4. Lift the power-button board, along with its cable, off the middle frame [4].