Ricoh FT6645 Manual page 112

23 April 1993 PAPER FEED
6.14.2 Tray Lock Mechanism
[C]
[A]
[B]
When the tray starts moving up, the tray lock lever [A] drops in the hole on
the base plate to engage the stopper [B], locking the tray in position. This
prevents the tray from being pulled out while in the up position.
When the bottom plate is lowered to the bottom position, the bottom plate
presses down the pin [C] on the lock lever. The opposite end of the lever then
moves up, allowing the tray to be pulled out.
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