Ricoh C211 Service Manual page 599

2.
Adjusting The Drum Rotation Sensor
[A]
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a.
1
w-
'"s8
1
l@l \
qf
[cl
Purpose : To ensure correct main motor
Method : 1.
2.
speed detection.
3.
4.
Remove the rear coven of the machine (6 screws).
Make sure that the drum rotation sensor [B] is positioned so that the
pulse disc is inserted into the sensor by 8 & 1 mm as shown above.
If not, loosen the screw [C] securing the sensor bracket and adjust the
sensor bracket position.
After adjustment, rotate the drum with a (1Omm) open end wrench to make
sure that the pulse disk [A] does not contact the sensor during rotation.
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Rev. 8189