Oki ML690 User Manual page 72

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.
NOTE: Make sure that the guide is pushed to the end
of the printhead.
Move the printhead horizontally to make sure
.
that the ribbon is properly installed.
ML690/ML691 User's Guide