8. Release the ZIF connector (3) to which the pointing stick cable is attached, and disconnect the
pointing stick cable (4) from the system board.
9. Remove the keyboard.
Reverse this procedure to install the keyboard.
WWAN module
CAUTION: The WWAN module and the WLAN module are not interchangeable.
Description Spare part number
HP un2400 Mobile Broadband Module 483337-001
Before removing the WWAN 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 45).
5. Remove the SIM (see
SIM on page 46).
6. Remove the keyboard (see
Keyboard on page 56).
Remove the WWAN module:
1. Disconnect the WWAN antenna cables (1) from the terminals on the WWAN module.
NOTE: The red WWAN antenna cable is connected to the WWAN module “Main” terminal. The
blue WWAN antenna cable is connected to the WWAN module “Aux” terminal.
2. Remove the two Phillips PM2.5×3.0 screws (2) that secure the WWAN module to the computer.
(The edge of the module opposite the slot rises away from the computer.)
58 Chapter 4 Removal and replacement procedures
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