HP ELITEBOOK 840 G4, Руководство по техническому обслуживанию и ремонту

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WLAN/Bluetooth combo card
The computer uses a card that provides both WLAN and Bluetooth functionality.
The WLAN module and WWAN module are not interchangeable.
Description Spare part number
Intel Dual Band Wireless-AC 3165 802.11ac 1x1 WiFi + BT 4.0 combo adapter 851592-001
Intel Dual Band Wireless-AC 8260NGW 802.11a/g/g/n+ac 2x2 WiFi + BT 4.2 combo adapter 851594-001
Intel Dual Band Wireless-AC 8260NGW 802.11a/b/g/n+ac non-vPro 2x2 WiFi + BT 4.2 combo adapter 852511-001
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 bottom cover (see Bottom cover on page 32 ).
5. Remove the battery (see Battery on page 36 ).
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’. 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.
2. Remove the one Phillips M2.5×3.0 screw (2) that secures the WLAN module to the computer. (The edge
of the module opposite the slot rises away from the computer.)
42 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts