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Replacement Procedures
4.13 System Board
CAUTION: 1. When handling the system board, always hold the edges. Do not touch the
printed circuit face.
2. If replacing with a new system board, pls refer to section “Setting of the
hardware configuration”. Also update with the latest BIOS as described
in Appendix “BIOS Rewrite Procedures” and with the latest EC/KBC as
described in“EC/KBC Rewrite Procedures”.
Removing the system board
The following describes the procedure removing the system board.
1. Disconnect the power cable from the system board
Figure 4-23 Disconnect the power cable
2. Disconnect the speaker cable, USB cable, modem cable from the connector on the
system board.
Satellite U400/Satellite Pro U400/PORTEGE M800 Maintenance Manual 39