Oki C3520 - Manual (Page 91)

Maintenance > 91
8. Holding the complete assembly by its top centre, lower it
into place in the printer, locating the pegs at each end into
their respective slots in the sides of the printer cavity.
9. Close the printer top cover and press down firmly so that
the cover latches closed.
10. Gently lower the scanner on to its supports.
C,M,Y
NOTE
If you need to return or transport your printer for any reason,
please make sure you remove the image drum unit
beforehand and place in the bag provided. This is to avoid
toner spillage.