HP ProBook 4545s HP ProBook 4545s Notebook PC - Maintenance and Service Guide - Page 46

labeled 1. The WLAN antenna cable labeled 2 connects to the WLAN module Aux terminal - base system device

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Before removing the WLAN module, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 34). 5. Remove the bottom door (see Bottom door on page 35). Remove the WLAN module: 1. Position the computer upside-down with the battery bay away from you. 2. Locate and remove the mylar protector glued to the base enclosure (see bottom parts locationBottom parts location on page 36) to access the WLAN card. 3. 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". If the computer is equipped with an 802.11a/b/g/n WLAN module, the yellow WLAN antenna cable connects to the middle terminal on the WLAN module. 4. Remove the two Phillips PM2.0×3.0 screws (2) that secure the WLAN module to the computer. (The edge of the module opposite the slot rises away from the computer.) 38 Chapter 4 Removal and replacement procedures

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Before removing the WLAN module, follow these steps:
1.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.
Disconnect all external devices connected to the computer.
3.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet,
and then unplugging the AC adapter from the computer.
4.
Remove the battery (see
Battery
on page
34
).
5.
Remove the bottom door (see
Bottom door
on page
35
).
Remove the WLAN module:
1.
Position the computer upside-down with the battery bay away from you.
2.
Locate and remove the mylar protector glued to the base enclosure (see bottom parts
location
Bottom parts location
on page
36
) to access the WLAN card.
3.
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”. If the computer is equipped with an 802.11a/b/g/n WLAN module, the yellow WLAN
antenna cable connects to the middle terminal on the WLAN module.
4.
Remove the two Phillips PM2.0×3.0 screws
(2)
that secure the WLAN module to the computer.
(The edge of the module opposite the slot rises away from the computer.)
38
Chapter 4
Removal and replacement procedures