Toshiba TECRA S1 - Manual (Page 200)

4 Replacement Procedures 4.14 System Board
4-52 TECRA S1 Maintenance Manual
Installing the System Board
CAUTION: When installing the system board, be sure to seat the board in the correct
position. Misseated system boards can cause device damage when the computer is
reassembled.
Install the system board according to the following procedures and Figures 4-34.
1. Attach the lever of the slide switch to the correct position.
2. Place the system board in the correct position and secure it with the one M2.5x3.5
black flat-head screws.
3. Fasten the one M2.5x3.5 screws and fix the system board to the base cover.