Toa WA-1822C - Manual (Page 18)

10.2. Demagnetizing the Head
The Recording/Playback head could become magnetized as the cassette deck is used for prolonged periods
of time, resulting in important recordings being consumed by noise or erased. To avoid these problems,
periodically demagnetize the head using a commercial head eraser.
Note
Do not allow any magnetic or metal objects other than an eraser to contact the head.
Caution
Lubricating the cassette deck's mechanism may cause failure.
Never lubricate any part of the mechanism.
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10. CLEANING (WA-1822C only)
10.1. Cleaning the Head, Capstan and Pinch Roller
If the cassette deck is used for prolonged periods of time, its
heads, capstans and pinch rollers will become dirty. As a
result, sound output could be affected by lower output, a
reduction in high-frequency sound output or irregular pinch
roller rotation.
To avoid these problems, periodically clean these parts with
a commercial cleaning tape or a cotton swab dampened in
alcohol.
Note
Never use hard, sharp materials like a screwdriver blade or
metal rod when cleaning.
When cleaning with a cotton swab, switch off the unit's
power, then open the cassette receptacle door as shown at
right.
Note
The cassette door cannot be detached.
Capstan Pinch roller Pinch roller
Erase head Recording/Playback head