Oki ML620 User Manual page 70

Swing the used ribbon cartridge up off the
.
printhead, lift it out, and discard it.
Remove the new ribbon cartridge from its
.
wrapping and note the position of the Ribbon
Guide (1), Knob (2), and Pin (3).
In the direction indicated by the arrows,
.
insert the pins at both ends of the ribbon
cartridge (1) into the U grooves (2) in the
printer until the ribbon cartridge is fully locked.
NOTE: It may be easier to mount the ribbon cartridge
in place if you align it with the topside of the
grooves. Also, a slightly loose ribbon may
make it easier to mount the ribbon cartridge.
Holding the sides of the ribbon guide slope
.
it downward until the ribbon guide comes
in line with the slot of the printhead.
ML620/ML621 User's Guide
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