Recommended usage of the AY-DVMCLB is once every 50 hours of recording or playback. More frequent cleaning may be required depending on temperature, humidity, or dust in the operating environment.
In particular, camcorders and portable DV decks operated in dusty or smoky environments may need more attention.
Under most circumstances, Cleaning Cassettes should not be used more frequently than once every 25 hours.
To clean, play the DV cleaning cassette for approx. 5 seconds. Then check the result by playing back a pre-recorded cassette.
If the picture is still not clean, play the DV Cleaning Cassette again. However, separate each use by 10-second cool-down periods.