Ricoh Aficio 650 Operating Instructions Manual page 202

WHAT TO DO IF SOMETHING GOES WRONG
Tray 2 (550-sheet Tray)
A
Pull out the paper tray until it stops.
3
B
Square the paper and set it in the tray.
Important
Do not stack paper over the limit mark.
Make sure that the paper stack is flush with the right side fence.
Note
Shuffle the paper before placing it in the tray.
Correct the paper, if curled or warped, before placing it in the tray.
C
Push the paper tray in until it stops.
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TSPH111E
TSPH130E