Maintenance and Service Guide
Table Of Contents
- Computer features
- Illustrated parts catalog
- Routine care, SATA drive guidelines, and disassembly preparation
- Removal and replacement procedures
- Computer Setup (F10) Utility
- Troubleshooting without diagnostics
- Safety and comfort
- Before you call for technical support
- Helpful hints
- Solving general problems
- Solving power problems
- Solving hard drive problems
- Solving media card reader problems
- Solving display problems
- Solving audio problems
- Solving printer problems
- Solving keyboard and mouse problems
- Solving hardware installation problems
- Solving network problems
- Solving memory problems
- Solving CD-ROM and DVD problems
- Solving USB flash drive problems
- Solving front panel component problems
- Solving Internet access problems
- Solving software problems
- POST error messages
- Password security and resetting CMOS
- Using HP PC Hardware Diagnostics
- Backing up, restoring, and recovering
- Power cord set requirements
- Statement of memory volatility
- Specifications
- Index

WLAN module
The WLAN module installs into a connector on the system board.
For a list of available WLAN modules, see Computer major components on page 6.
Before removing the WLAN module, follow these steps:
1. Prepare the computer for disassembly (Preparation for disassembly on page 20).
2. Remove the access panel (Access panel on page 23).
3. Remove the drive cage (Drive cage on page 26).
Remove the WLAN module:
1. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE: The WLAN antenna cable labeled 1 connects to the WLAN module Main terminal labeled 1. The
WLAN antenna cable labeled 2 connects to the WLAN module Aux terminal labeled 2.
2. Remove the Phillips screw (2) that secures the WLAN module to the computer. (The edge of the module
opposite the slot rises away from the computer.)
3. Remove the WLAN module (3) by pulling the module away from the slot at an angle.
NOTE: WLAN modules are designed with a notch to prevent incorrect insertion.
Reverse this procedure to install the WLAN module.
48 Chapter 4 Removal and replacement procedures