User guide

I/O Board 99
23
I/O Board
WARNING: Before working inside your computer, read the safety information
that shipped with your computer. For additional safety best practices information,
see the Regulatory Compliance Homepage at dell.com/regulatory_compliance.
CAUTION: Only a certified service technician should perform repairs on your
computer. Damage due to servicing that is not authorized by Dell is not covered by
your warranty.
CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist
grounding strap or by periodically touching an unpainted metal surface (such as a
connector on your computer).
CAUTION: To help prevent damage to the system board, remove the main battery
(see "Removing the Battery" on page 15) before working inside the computer.
Removing the I/O Board
1 Follow the instructions in "Before You Begin" on page 9.
2 Follow the instructions from step 2 to step 14 in "Removing the System
Board" on page 77.
3 Remove the Mini-Card(s) (see "Removing the Mini-Card(s)" on page 45).
4 Remove the display assembly (see "Removing the Display Assembly" on
page 53).
5 Remove the hinge cover (see "Removing the Hinge Cover" on page 69).
6 Remove the two screws that secure the I/O board to the computer base.
7 Lift the I/O board off the computer base.