Ricoh M281 Series Service Manual page 327

3. Release the flat cable and harness from the harness guides.
4. Remove the seven screws from the controller box [A].

The screw [B] is a tapping screw. Be careful not to use the wrong screws when
installing the controller box.
5. Release the hook [A], and then remove the controller box [B].
SM 4-133
Electrical Components
D255/D256/M281/M282