Toshiba Satellite M640 Maintenance Manual page 182

4.9 Logic Upper Assembly
3. Turn the laptop upright.
4. Remove one M2.5x15 screw and three M2.5x8 screws securing the logic upper assembly.
5. Disconnect the speaker cables, CAP sensor FFC, light bar FFC and touch pad FFC from
the motherboard, as indicated in Figure 4.17.
Figure 4.17 Removing four logic upper assembly screws and disconnecting four cables
Satellite M600/M640/M645/M647 Maintenance Manual
M2.5x15*1
M2.5x8*3
4 Replacement Procedures
4-29