Star Micronics LC-8021 User Manual page 13

Remove the ribbon cartridge from its package and check to make sure its
ribbon guide is correctly in place. If it isn't, thread the ribbon through the
guide.
Pull down on the ribbon guide to create considerable slack in the ribbon.
Insert the two round tabs on either side of the ribbon cartridge into the two
slots inside the printer and slide the cartridge into place as you rotate the
knob on the right side of the cartridge to take up some of the slack in the
ribbon.
Press on the top of the cartridge until it snaps securely into place.
Note:
A ribbed ribbon advance shaft must enter into the hole on the back, right side
of the ribbon cartridge. You seem to have trouble getting the ribbon cartridge
to seat properly, try turning the knob of the ribbon cartridge slightly so the ribs
on the shaft align properly with the hole.
Once the ribbon cartridge is securely in place, use your thumb and
forefinger to grasp the sides of the ribbon guide handle and attach the guide
to the carriage below the print head. The two metal rods below the print
head must fit into the holes provided in the ribbon guide. You will feel the
ribbon guide snap securely into place when it is installed correctly.
Note:
Angle the ribbon guide downwards so it slips under the print head, and then
straighten the guide to slip it onto rods below the print head.
Rotate the knob on the ribbon cartridge to take up any slack in the ribbon.
Ribbon guide holder
Installing the ribbon cartridge 7