Ricoh S-P3 Manual page 105

Extending the Tray
Take out the tray and try this for yourself.
Procedure: Operating Instructions (Hardware Guide) - Paper and
Other Media – Loading Paper
Extend the tray when adding paper longer than A4/LT
To use longer paper, release the catches at both sides, then extend the tray and
re-lock the catches.
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M080 Training - Sincere-P3