Ricoh B230 Training Program page 146

The ITB contact motor moves the left side of the ITB up and
down, through a cam.
•
Up: The belt contacts all four drums
•
Down: The belt contacts the K drum only
The sensor detects when the belt contacts all four drums.
The ITB contact sensor operates as the detection sensor during machine
initialization, and also as the position sensor during machine operations.
Before machine initialization, the left side of the image transfer belt is in the home
position. When initialization starts, the ITB contact motor lowers the left side until
the actuator has passed the sensor. Then ITB contact motor lifts up the left side to its
home position. This action actuates the sensor in a certain pattern.
ITB Contact and Release - 2
Cam
ITB Contact
Sensor
ITB Contact
Motor
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