Ricoh C211 Service Manual page 486

3. Drum Lock Mechanism 1
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[A]
When the drum unit is set in the machine, the arm [B] is turned counterclockwise by the
lock pin [A]. The top of the arm is locked by the stopper [C] to lock the drum in the
machine completely. At the same time, the drum detecting switch [E] is turned on by the
top of the stopper [C].
When pulling the lever [D] to the operation side, the stopper [C] is turned clockwise and
the stopper is released from the arm [B] due to spring tension. Therefore, the locking
mechanism of the drum is also released.
2-73
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