Toshiba T2100 Series Maintenance Manual page 140

4.10 System Board and Backup/RTC Batteries
Removing the System Board and Backup/RTC Batteries
To remove the system board and the backup and RTC batteries, follow the steps below and
refer to Figure 4-20.
1. Turn off the power to the computer, then disconnect the AC power cord and all
external cables connected to the computer.
2. Remove the battery pack, optional PCMCIA card, optional memory module,
keyboard, HDD, top cover, display assembly, FDD and AC PS unit as described in
Sections 4.2 through 4.9.
3. Remove the two M2.5x6 screws on the system board.
4. Push in the I/O port and system board to clear the frame, then lift up the system
board with its cover.
5. Disconnect the RTC battery cable from PJ2 and lift out the RTC battery.
6. Disconnect the back up battery cable from PJ503 and lift out the back up
battery.
4-26
Figure 4-20 Removing the system board
T2100 Series