Toshiba T2150 series Maintenance Manual page 141

4.10 System Board and Backup/RTC Batteries
Removing the System Board and Backup/RTC Batteries
To remove the T2150 series system board and backup/RTC batteries, follow the steps below
and refer to figure 4-21.
1. Turn the computer's power off. Disconnect the AC power cord and all external
cables connected to the T2150 series.
2. Remove the battery pack, optional PCMCIA card, keyboard, optional memory
module, keyboard, top cover, display assembly, HDD, AC PS unit, and CD-ROM
as described in sections 4.2 through 4.9.
3. Remove two M2.5x6 screws on the system board (figure 4-21).
4. Push in the I/O port and system board to clear the frame, then lift up the system
board with its cover (figure 4-21).
5. Disconnect the RTC battery cable from PJ2 and lift out the RTC battery (figure
4-21).
6. Disconnect the backup battery cable from PJ503 and lift out the backup bat-
tery (figure 4-21).
4-26
Figure 4-21 Removing the system board
T2150 Series