Oki ES8453 MFP User Manual - page 859
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5.
Fan a stack of paper well, and then align the edges of the paper.
6.
Load paper with the print side face down.
Note
Do not load paper above the " " mark on the paper guide.
7.
Secure the loaded paper with the paper guide.
8.
Check if a size of loaded paper matches the setting of paper size
dial.
9.
Push the paper cassette until it stops.
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