Ricoh D124-17 Service Manual page 307

Roll Units
9. From the front of the machine, push the roll unit slightly to the left [1], and then remove it [2].
10. Lay the roll unit on a flat clean surface.
Reinstallation
1. When you install the roll unit at the front, push it to the right so that it locks in place.
2. At the rear, push the roll unit [A] to the left to make sure that it is locked in place.
3. Use a flashlight to check hole [B] on the right (and on the left) to make sure that the holes are
aligned correctly.
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