HP Dv4 1540us Service Guide - Page 108
Reverse the above procedure to install the modem module., Remove the modem module.
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Page 108 highlights
3. Lift up on the back of the modem module (3) to disconnect it from the system board. 4. Remove the modem module. Reverse the above procedure to install the modem module. 100 Chapter 4 Removal and replacement procedures
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3.
Lift up on the back of the modem module
(3)
to disconnect it from the system board.
4.
Remove the modem module.
Reverse the above procedure to install the modem module.
100
Chapter 4
Removal and replacement procedures