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Brother MFC4550 PLUS User Manual

Page 162

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3. Unscrew the two screws and remove

the option slot cover plate and keep
it in a safe place.

4. To install the serial interface board

onto the main controller board, plug
the serial interface board into the
upper left connectors on the main
controller board.

5. Secure the serial interface board

with the two screws.

r WARNING

Hold the edge of the serial interface board. Do not touch the surface of the board.
Make sure the serial interface board is securely seated on the main controller board.

6. Reinstall the main controller board

in the MFC by sliding it into the
guide rails.

7. Secure the main controller board

with the three screws.

150