Epson TM-U230 Developer's Manual page 38

Confidential
6. Insert the ribbon between the print head and the platen, as shown in the figure below, and
press it in until it clicks into place.
7. Turn the ribbon cassette knob 5 to 6 times in the direction of the arrow to remove any slack
in the ribbon.
Note:
Make sure that the ribbon is inserted between the print head and the platen and that there are no
creases or folds in the ribbon.
Figure 2-7 Installing the ribbon cassette and removing ribbon slack
2-8 Handling