Dell OptiPlex 7770 All-in-One Service Manual

Installing the power button board

1. To install the speakers:
   1. Using the alignment post, place the power button board into its slot on the middle frame [1].
   2. Replace the single screw (M3x5) that secures the power button board to the middle frame [2].
   3. Slide the power button board cable under the antenna cable, then adhere the power button board cable to the display assembly base [3].
   4. To secure the cable, slide the power button board cable into the socket on the system board and close the latch [4].
      
2. Install the following components:
   1. Speakers
   2. I/O bracket
   3. Base cover
   4. System board shield
   5. Back cover
   6. Stand
3. Follow the procedure in After working inside your computer.