Replacement Procedures
4.14 System Board
CAUTION: 1. When handling the system board, always hold by the edges. Do not touch
the printed circuit face.
2. If replacing with a new system board, execute the subtest01 Initial
configuration in section 3.3 “Setting of the hardware configuration”. Also
update with the latest BIOS as described in Appendix G “BIOS Rewrite
Procedures” and with the latest EC/KBC as described in Appendix H
“EC/KBC Rewrite Procedures”.
Removing the system board
The following describes the procedure for removing the system board.
1. Disconnect the power cable from the system board (See Figure 4-25)
Figure 4-25 Disconnect the power cable
2. Disconnect the speaker cable, USB cable and Audio FFC cable from the connector
on the system board.
3. Remove the following screws securing the system board and remove the system
board. (See Figure 4-26)
• M2.0×5.0 BIND screw x3
44Satellite U300 and Satellite Pro U300 Maintenance Manual (960-Q08)
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