Installing The Power-Button Board - Dell OptiPlex 7780 All-In-One Service Manual

2. Remove the stand.
3. Remove the cable cover
4. Remove the back cover.
5. Remove the system-board
6. Remove the bottom cover.
7. Remove the rear-I/O bracket.
8. Remove the speakers.
About this task
The following image provides a visual representation of the power-button board removal procedure.
Steps
1. Open the latch and disconnect the power-button board cable from the connector on the system board.
2. Unroute the power-button board cable from the display-assembly base, then slide the power-button board cable out from under the
antenna cables.
3. Remove the screw (M3x5) that secures the power-button board to the middle frame.
4. Lift the power-button board, along with its cable, off the middle frame.

Installing the power-button board

Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image provides a visual representation of the power-button board installation procedure.
68 Removing and installing components
(optional).
shield.