Ricoh Ch-C1 Series Service Training page 470

ITB Bias Roller Lift Mechanism - 2

The PTR lift motor [A] rotates CW (clockwise) [1] or CCW (counter clockwise) [2] in order to
rotate the bias roller cam [B] that determines whether the PTR contacts the ITB or not:
 Left: Contact
 Right: Separated

You can find whether the PTR is in contact or separated by seeing the direction of the flat
face of the ITB bias roller shaft on which the bias roller cam [B] is attached.
 [1]: Contact - The flat face of the shaft points to the lower left. The ITB bias roller cam (flat
 [2]: Separated - The flat face of the shaft points to the lower right. The ITB bias roller cam

In the "separated" state, the space [C] (the space between the PTR and the ITB) is 1.5 mm
regardless of paper thickness.
Slide 470
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part) contacts the bearing of the PTR. In this state, the PTR moves up slightly higher.
[B] pushes the bearing of the PTR down to slightly separate the PTR and the ITB.
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Ch-C1 Training