Brother MFC-4550 Operation Manual page 199

MFC 4550/6550MC/7550MC
OP-US-5.0
Option slot cover plate
Screw
Serial interface board
Screw
Connector
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.
Screw
Main controller board
Main controller board
OPTIONAL ACCESSORIES
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 board serial interface board into
the upper left connectors on the
main controller board.
5 . Secure the serial interface board
with the two screws.
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.
15-2