Transfer Belt Sensor And Id Sensor; Transfer Belt Sensor; Id Sensor - Ricoh G157 Service Manual

TRANSFER BELT

6.7.2 TRANSFER BELT SENSOR AND ID SENSOR

[A]
[B]

Transfer Belt Sensor

The copier has a reflective photosensor–the transfer belt sensor [B]–below the left
side of the transfer belt. The transfer belt sensor emits light to the band [A] on the
left end of the transfer belt, and accepts its reflection.
Since the transfer belt is driven with the OPC belt (
the OPC belt have the same rotation speed. If the transfer belt sensor fails to
detect the normal rotation speed of the transfer belt, the message "Reset PCU
Correctly" is shown.

ID Sensor

The machine has a reflective photosensor-the ID sensor [C]-below the right side of
the transfer belt. The ID sensor emits light to the transfer belt and accepts its
reflection. The controller examines the signals from the ID sensor to adjust the
image density.
G157
[C]
6-28
G157D935.WMFF
6.7.1), the transfer belt and
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