Ricoh D017 Service Manual page 320

Electrical Component Defects
Shift Sensor
TD Sensor
Upper Relay Sensor
An SC condition occurs only when a new PCU is being installed in the machine.
During copying, if the ID sensor fails, the image density will be changed.
SM
903-1 STB
327-1 BCU
307-4 BCU
6-26
Open
SC770 is displayed.
Shorted
Open
SC390 is displayed.
Shorted
The Paper Jam indicator will
Open light whenever a copy is
made.
The Paper Jam indicator
Shorted lights even if there is no
paper.
D017/D018/D019/D020/D084/D085