Installing The System Board - Dell Vostro 3405 Service Manual

Steps
1. Remove the two (M2.5x5) screws from the right hinge.
2. Fold the right hinge up.
3. Disconnect the following cables from the system board:
a. Speaker cable
b. Keyboard FFC
c. Power adapter port cable
d. Keyboard backlight FFC
e. Touchpad FFC
f. Hard drive FFC
g. IO board FFC
h. fingerprint reader FFC
i. power button FFC from the system board
4. Remove the single (M2x4) screw that secures the system board to the palmrest.
5. Carefully lift the system board away from the chassis.

Installing the system board

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following images indicate the location of the system board and provides a visual representation of the installation procedure.
62 Disassembly and reassembly