HP Pavilion dm1-4200 Maintenance And Service Manual page 57

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
Remove the WLAN module:
1. With one hand, slide the battery/service door latch (1) to release the service door, and at the
same time, use the other hand to press down on the service door, and then slide it toward the
front of the computer (2).
2. Lift the door to remove it (3).The service door is available. For spare part numbers, see
Computer major components on page
3. Disconnect the WLAN antenna cables (1) from the terminals on the WLAN module.
NOTE: The #1 WLAN antenna cable is connected to the WLAN module #1 terminal. The #2
WLAN antenna cable is connected to the WLAN module #2 terminal.
4. Remove the Phillips PM2.0×3.7 screw (2) that secures the WLAN module to the system board.
(The WLAN module tilts up.)
Battery on page 44).
19.
Component replacement procedures 49