Installing The System Board - Dell Inspiron 3505 Service Manual

Steps
1. Disconnect the power-adapter port cable from the system board.
2. Disconnect the fan cable from the system board.
3. Open the latch and disconnect the fingerprint-reader cable from the system board, if applicable.
4. Open the latch and disconnect the I/O-board cable from the system board.
5. Open the latch and disconnect the hard-drive cable from the system board, if applicable.
6. Open the latch and disconnect the touchpad cable from the system board.
7. Open the latch and disconnect the keyboard-backlight cable from the system board, if applicable.
8. Open the latch and disconnect the keyboard cable from the system board.
9. Disconnect the speaker cable from the system board.
10. Remove the screw (M2x4) that secures the system board to the palm-rest and keyboard assembly.
11. 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 process.
Removing and installing components 57