Yamaha KX-800/U Owner's Manual page 22

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MAI"",TENANCE
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After using your KX-800/U for a certain length of time, it is possible that
the sound of your tapes may deteriorate with fading, vibration, or noise as
a noticeable result. This is caused by an accumulation of dirt or dust on
the heads, capstans, or pinch rollers, and magnetization of the heads. It is
advisable to clean the capstan and pinch roller. Use a commonly
available cotton swab and head cleaning solution to do this, or use a
special head cleaning tape. Head demagnetizers are also commonly
available.
• When cleaning the heads, be careful not to apply unnecessary
pressure.
• When demagnetizing the heads, be sure to follow the instructions of
the head demagnetizer carefully.
• For better access to the head assembly, the cassette compartment
cover is detachable by pulling upward. To reattach it, reverse the same
procedure.
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