HP (Hewlett-Packard) C3Q78UA ユーザーズマニュアル

Qualcomm Atheros AR9485 802.11 b/g/n 1×1 WiFi Adapter

675794-001

Ralink RT3290LE 802.11 b/g/n 1x1 WiFi and Bluetooth 4.0 Combo Adapter

690020-001

Ralink RT5390R 802.11 b/g/n 1×1 WiFi Adapter (select models only)

691415-001

To prevent an unresponsive system, replace the wireless module only with a wireless

module authorized for use in the computer by the governmental agency that regulates wireless devices

in your country or region. If you replace the module and then receive a warning message, remove

the module to restore device functionality, and then contact technical support.

Before removing the WLAN module, follow these steps:

Shut down the computer.

Disconnect all external devices connected to the computer.

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.

Remove the battery (see 

Remove the service door (see 

Remove the WLAN module:

Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.

The 1/black WLAN antenna cable is connected to the WLAN module 1/Main terminal.

The 2/gray WLAN antenna cable is connected to the WLAN module 2/Aux terminal.

Remove the Phillips M2.5×2.5 screw (2) that secures the WLAN module to the system board. (The

WLAN module tilts up.)

ENWW

Component replacement procedures

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