Ricoh 2400L Operator's Manual page 247

INSTALLING THE MACHINE
4. Push down the metal plate on the base of the cassette until it clicks.
Make sure the positions of the two side fences match the paper size by checking
them against the scale printed on the bottom of the paper cassette.
The fences should be aligned so that the inside edge of each fence is just
touching the line of the scale.
To move a fence, pinch the top lever in and slide the fence in or out as shown.
Adjust the position of the two side fences to match the paper size.
5. Place the paper into the cassette in the
direction shown opposite, making sure it
fits under the metal corners at the front.
If there is space between the paper and a
fences, the paper will not be fed properly.
To avoid this, carefully move in each
fence until it is flush with the paper.
6. If you have the optional cassette, set
the appropriate size plate at the front
of it.
7. Replace the cassette.
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