Ricoh D197 Service Manual page 220

Internal Finisher SR3130
13. While pressing the bottom plate [A] into the area [B] shown by the red-dashed line,
insert the tabs of the bottom plate into the slots [C][D] shown by the blue circles.
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The following procedure is the easiest way to set this component.
1) Slip the bottom plate [A] into the position [B].
2) Insert the bottom plate [A] into the hole in the blue circle [C].
3) When the bottom plate [A] is picked up (see below), it can be inserted into the hole
in the blue circle [D].
D197/D198/D199/D200/D201/D202 2-150 SM