Acer TravelMate 420 Service Manual page 81

43. Disconnect the touchpad button board FFC.
44. Release nine locks that secure the touchpad cover.
45. Detach the touchpad cover.
46. Remove the touchpad.
47. Unscrew the four screws holding the antenna line. Two on each side.
48. Remove the antenna line from the upper case.
Chapter 3 73