Ricoh D146 Service Manual page 1791

5. Install the SG3 interface unit [A] (

Insert the tab [B] of the SG3 interface unit bracket in the cutout [C] on the top of the
controller box and the tab [D] of the controller box in the cutout [E] of the SG3 interface
unit.
6. Attach one end of the flat cable [A] to CN603 on the FCU board and the other end of the
flat cable [A] to CN660 on the CCU I/F board of the SG3 interface unit.

Make sure that the blue tapes of the flat cable face outward.
7. Reinstall the rear cover and controller box cover.
SM
x 3).
15 D163