Canon Mk1500 Cable and Wire Marker Printer - Manual (Page 99)

Check that paste is not stuck to the outlet of label tape cassette.
Label tape can be jammed when paste remains stuck to the outlet of label tape cassette.
Open the cover and check whether paste is not stuck to the outlet of label tape cassette. If
paste is stuck, take it off.
outlet
Avoid excessive reverse.
If you feed the label tape excessively in the reverse direction, the leading edge of the label
tape enters the cassette. Refer to “What to do if the label tape becomes stuck inside the
cassette” ( page 36).
Check the ribbon for slack.
The ribbon of the ribbon cassette can slacken when it is fed reverse. Open the cover and
check whether the ribbon is slack. If it is slack, take up the slack.
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Maintenance Part 5