Ricoh D065 Service Manual page 1016

4. Attach the interface board [A] to the controller board securely (
5. Remove the jumper [A] on the MBU [B] and set it to the ON position.
If the jumper remains at the OFF position, this will cause SC672 (Controller
Startup Error) to appear.
SM
Installation: Fax Option Type 9001 (D418-00)
3
x 2).
D418