Lens/Mirrorpositioning; Lens Drive - Ricoh FT4430 Service Manual

LENS/MIRROR POSITIONING

1. Lens Drive

The lens drive motor [M2] (stepper motor) changes the lens [A] position in
accordance with the selected reproduction ratio to provide the proper optical
distance between the lens and the drum surface.
The lens drive motor drives the entire lens unit through an idle gear [B]. The
rotation of the lens drive pulley moves the lens back and forth in discrete
steps.
[ B ]
[M2]
[ A ]
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16 April '88