Ricoh Aficio SP 4110N - Manual (Page 181)

11. Push the lock levers of the fusing unit down until they click.
AUB315S
Proceed to step 13 if the optional duplex unit is installed.
12. Position the rear cover horizontally and align it with the grooves in the printer's interior.
AUB316S
13. Close the rear cover.
AUB317S
Removing Misfed Paper
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