Ricoh M281 Series Service Manual page 333

3. Remove the slot cover [A].
4. Remove the controller box cover [A].

The screw [B] is a small screw. Be careful not to use the wrong screw when installing
the controller box cover.
5. Remove the controller board [A] with the BiCU [B].

Be careful not to damage the backside of the controller board [A] and the BiCU [B].
SM 4-139
Electrical Components
D255/D256/M281/M282