Toshiba 650CT Maintenance Manual page 148

4.9 Membrane Switch and Backup Battery
WARNING: If you replace the backup battery, be sure to use only batteries
recommended by Toshiba. Installation of the wrong battery can cause the battery to
explode or cause serious damage.
Removing the Membrane Switch and Backup Battery
To remove the membrane switch and backup battery, follow the steps below and refer to
Figure 4-24.
1. Turn off the power to the computer, then disconnect the AC adapter and all
external cables connected to the computer.
2. Remove the battery pack, optional memory module, optional PC card, HDD,
DAA module, keyboard and top cover with display assembly as described in
Sections 4.2 through 4.8.
3. Remove the two M2x4 screws securing the membrane switch metal cover, and
lift out the membrane cover and switch.
4. Remove the tape securing the backup battery and lift out the backup battery.
Figure 4-24 Removing the membrane switch and backup battery
4-24
650CT