JVC KD-2A - Maintenance; Cleaning Procedures; Demagnetizing and Oiling Procedures; Cabinet Cleaning

No. 4151
KD-2A/B/C/E/J/U |
Maintenance
To get long, trouble-free service, maintenance is important.
Do not forget cleaning and demagnetizing.
Cleaning
After long use, the heads and tape part — capstan, pinch
roller, etc. — will become dirty with dust or magnetic
particles. Dirty heads cause imperfect erasing or high fre-
quency drop-off. A dirty capstan and pinch roller will cause
unstable tape speed, leading to increased wow and flutter.
Always keep them clean by following the procedure below.
1. Heads
1) Press the PLAY button to move the heads out.
2) Use the head cleaning stick provided to wipe the
surface where the tape comes into contact with the
head.
(It is effective to moisten the cotton with alcohol.)
2. Pinch roller and capstan
1) Press the PLAY button, and the pinch roller will
move out and rotate.
2) Apply a soft cloth (soaked in alcohol, it will be more
effective) to the rotating pinch roller and capstan.
Be careful not to let the cloth get caught!
* Do not use any cleaner besides alcohol or a spe-
cifically prepared tape head cleaning solution.
la
a
a “
(, =e
Soft cloth
Direction of rotation
N of pinch roller
Pinch roller oN
(2)
(o)
Capstan
Fig. 9
3. Cabinet
When the cabinet becomes dirty, wipe it with a soft
cloth soaked with a neutral cleaning solution of a polish-
ing cloth.
Do not use thinner or benzine.
Demagnetizing
The heads are made from a material resistant to magnetiza-
tion, but after long use they may become magnetized. A
magnet brought into their vicinity can magnetize the heads,
causing excess noise. If noise seems to have increased,
demagnetize the heads with a head demagnetizer through
the following procedure.
1. Turn the POWER switch OFF.
2. Wrap the tip of the demagnetizer with vinyl tape or soft
cloth so as not to damage the head surface. Switch on
the demagnetizer and bring it close to the head.
3. Move the tip of the demagnetizer slowly first to the left
and right, then up and down in front of the head.
Gradually move it away from the head and switch if off
at a distance of more than 30cm. (12”')
4. The erase head need not be demagnetized. The capstan
shaft and tape guide should be demagnetized in the same
way as the record/playback head.
* Do not bring a magnetized metallic object (a screw-
driver, for example) near the head as this will increase
noise.
Oiling
Feed one or two drops of machine oil to the rewind roller
shaft, pinch roller shaft and magnet pully shaft once or
twice a year under normal conditions of use.
Avoid oiling them excessively, or rotation may become
irregular because of oil splashes.
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