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6.Then disconnect the VGA board connector.
7.Tilt the LCD module to 90 degree from the main unit.
8.Remove the LCD module from the main unit.
9.Detach the mylar that fastens then take the cable out of VGA shielding notch.
10.Disconnect the LCD coaxial cable from the VGA board.
11 .Remove the VGA shielding from the VGA board.
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Disassembling the Main Unit
1.See “Removing the Keyboard/ LCD Module and VGA Board” on page 67
2.Disconnect the left and the right speaker cable.
3.Disconnect the touchpad FFC.
4.Remove the 12 screws on the lower case.
5.Then detach the lower case from the main unit.
6.Disconnect the antenna line connectors that connects to the mini PCI wireless card.
7.Release the mini PCI wireless card lock with the fingers then remove it.
8.Unscrew the four screws that fasten the thremal module.
9.Remove the thermal module from the main unit.
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10.Release the CPU lock.
11 .Remove the CPU from the main unit carefully.
12.Tear off the tape that fastens the antenna line to the main board. Then take the antenna line out from the
13.Remove the screw here.
14.Unscrew the screw as shown here.
15.Then remove the main board assembly from the lower case.
16.Unscrew the four screw nuts that secure the I/O bracket.
17.Remove the screw on the main frame.
18.Disconnect one fan connector.
19.Disconnect another fan connector.
20.Remove the four screws that fasten the I/O bracket to the main frame.
21.Detach the I/O bracket from the main board.
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22.Unscrew the two screws holding the main board to the main frame.
23.Remove main board from the main frame.
24.Remove the two screws holding the MDC card.
25.Disconnect the MDC card connector and modem wire. Then remove the MDC card.
26.Use a tool to release the MDC cable lock.
27.Then remove the MDC cable.
28.Remove the three holding the support bracket.
29.Remove the support bracket.
30.Unscrew the three screws that secure the upper case shielding.
31.Then remove the upper case shielding.
32.Disconnect the FFC then remove it.
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33.Release the tape that fasten touchpad button board FFC. Then disconnect the FFC connecting to
touchpad button board.
34.Unscrew the two screws that secure the CD player board.
35.Take the CD player board off the lower case.
36.Remove the two screws holding CD-player button and CD-player support.
37.Remove the CD-player button.
38.Press the CD-player support latch.
39.Then remove the CD-player support.
40.Disconnect the FFC on the CD-player button.
41.Disconnect the FFC that connects to the touchpad button board.
42.Take the touchpad button board off the upper case.
TM420.book Page 72 Monday, September 23, 2002 10:27 AM