Yamaha MT120 - Manual (Page 27)

MAINTENANCE
The MT120 recording & playback head has been precision-constructed to extremely fine tolerances in order to make high-
quality 4-track recording possible. Optimum performance can only be achieved if the head surface is kept immaculately
clean. Cleaning should be carried out at regular intervals — at least after every 10 hours of use
Dirty heads can cause any of, or a combination of, the following problems:
l Recording, playback and erasure are not possible.
l Reduced playback sound level.
l Fluctuating and or/distorted sound.
l Excessive noise.
l A drop in level at the high frequencies.
If any of the above problems occur, clean the heads careful before assuming the fault is with the recorder. Use a commercially
available head-cleaning kit (read the instructions provided with the kit), or wipe carefully with a cloth or cotton swab that has
been dampened with isopropyl alcohol. Also clean the pinch roller at the same time as the heads.
* Clean the Shaded Areas
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MT120 MULTITRACK CASSETTE RECORDER