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HP ProBook 4446s Notebook PC - Removing and Replacing the Wireless LAN Module

This document pertains only to HP ProBook 4446s Notebook PC with the following case design:
Introduction
This document is provided to assist in removing and replacing the wireless LAN module for HP ProBook 4446s Notebook PC.
Tools required
Phillips-head P1 screwdriver
Minimum skill level
The end user requires no hardware-specific training to replace the defective part. The end user should have familiarity with system hardware and software requiring repair.
Parts required
  note:
Part numbers are subject to change.
The replacement part number will vary depending on the wireless LAN module that is being replaced. If a part is listed as "Yes" under "Requires Return" then the defective part needs to be returned to HP.Click here for more information on returning parts to HP.
Description
Part Number
Requires Return
Atheros 9485GN 802.11b/g/n 1 x 1 WiFi and 3012 Bluetooth 4.0 combination adapter (Maryann)
655795-001 (Modified)
Yes
Atheros AR9485 802.11b/g/n 1 x 1 WiFi adapter
675794-001 (Modified)
Yes
Broadcom 4313GN 802.11b/g/n 1 x 1 WiFi and 20702 Bluetooth 4.0 combination adapter
657325-001 (Modified)
Yes
link WLAN Ralink Ripple3 RT5390F_802.11b/g/n 1 x 1 PCIe HMC
670691-001 (Modified)
Yes
  note:
For customers in countries/regions with RoHS legislation (e.g. EU, China, etc.) restricting the use of hazardous substances in electrical equipment. The use of the "Original" spare part is regulated by RoHS legislation. If the unit contains a part that is labeled with the "Modified" spare number, the "Modified" spare part must be ordered as the replacement part. If the unit contains a part that is labeled with the "Original" spare number, please order the "Original" spare number as the replacement part. In this case, either the "Original" or the "Modified" spare number may be shipped which will not affect performance or functionality of the unit.
Wireless LAN module removal instructions
To view a video demonstrating the procedure for removing/replacing the wireless LAN module, click here to view the HP Services Media Library and then click on Remove/Replace videos. On the new window, select Wireless LAN module from the menu on the upper left hand side of the screen.
Review the safety considerations before performing the steps listed below by clicking on the following link:
  caution:
Failure to comply with the precautions could result in damage to the product or loss of data.
Step
Procedure
Instruction
1
Remove the battery.
2
Remove the service door.
3
Carefully disconnect the wireless antenna cables from the wireless LAN module.
  caution:
Use care when disconnecting the wireless antenna cables from the wireless LAN module. Damaged cables or connectors can degrade notebook performance.
4
Remove the two 3-mm P1 Phillips-head screws that secure the wireless LAN module to the system board and allow it to release to the spring tension position.
5
Grasp the wireless LAN module by the edges and pull gently to remove it.
6
Place the wireless LAN module in a static dissipative bag.
Wireless LAN module replacement instructions
Steps
Procedure
Instruction
1
Grasp the wireless LAN module by the edges and remove it from the static dissipative bag.
2
Align the notch in the wireless LAN module with the key in the wireless LAN module slot on the system board.
3
At an angle, gently insert the wireless LAN module into its slot on the system board.
4
Press the wireless LAN module down and replace the two 3 mm P1 Phillips-head screws to secure the wireless LAN module to the system board.
5
Reconnect the wireless antenna cables to the wireless LAN module.
  note:
Connect antenna labeled “1” to terminal 1 and antenna labeled “2” to terminal 2.
  caution:
Use care when connecting the wireless antenna cables to the wireless LAN module. Damaged cables or connectors can degrade notebook performance.
6
Replace the service door.
7
Replace the battery.

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