Installing The System Board - Dell P121G Service Manual

4. Remove the fan.
5. Remove the heat sink.
6. Remove the solid state
7. Remove the display assembly.
About this task
The following images indicate the location of the system board and provide a visual representation of the removal procedure.
Steps
1. Open the latch, and disconnect the fingerprint-reader cable, I/O-board cable, touchpad cable, keyboard cable and keyboard-
backlit cable from the system board.
2. Disconnect the speaker cable from the system board.
3. Disconnect the coin-cell battery cable from the system board.
4. Lift the system board off the palm-rest and keyboard assembly.

Installing the system board

Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
drive.
Removing and installing components 45