HP Pavilion dm4-1000 HP Pavilion dm4 Entertainment PC - Maintenance and Servic - Page 62

WWAN module, Disconnect the two WWAN antenna cables

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WWAN module NOTE: The WWAN module and the WLAN module are not interchangeable. Description HP un2420 Broadband Module (WWAN) Spare part number 531993-001 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 42). 5. Remove the memory/wireless module compartment cover (see Memory module on page 44). Remove the WWAN module: 1. Turn the computer upright with the front toward you. 2. Disconnect the two WWAN antenna cables (1) from the WWAN module. 3. Remove the two Phillips PM2.0×4.0 screws (2) that secure the WWAN module to the computer. (The edge of the module opposite the slot rises away from the computer.) 52 Chapter 4 Removal and replacement procedures

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WWAN module
NOTE:
The WWAN module and the WLAN module are not interchangeable.
Description
Spare part number
HP un2420 Broadband Module (WWAN)
531993-001
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
42
).
5.
Remove the memory/wireless module compartment cover (see
Memory module
on page
44
).
Remove the WWAN module:
1.
Turn the computer upright with the front toward you.
2.
Disconnect the two WWAN antenna cables
(1)
from the WWAN module.
3.
Remove the two Phillips PM2.0×4.0 screws
(2)
that secure the WWAN module to the computer.
(The edge of the module opposite the slot rises away from the computer.)
52
Chapter 4
Removal and replacement procedures