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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
frequency
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) Push Eject button to open the cassette holder.
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 rollar and capstan
Do the same method as heads.
3. Cabinet
When
the cabinet becomes dirty, wipe it with a soft cloth
soaked with a neutral cleaning solution of a polishing cloth.
*
Do not use thinner or benzine.
1 KD-A11A/B/C/E/J/U
Demagnetizing
The heads are made from a material resistant to magneti-
zation, but after long use they become magnetized.
A magnet
brought
into their vicinity can
magnretize 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 viny! 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 it off
at a distance of more than 30 cm. (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.
Removal of the Main Parts
Observe care in handing the parts since the parts are small in size and the distance between them are short due to a deck
design aimed mainly at compactness and high performance.
Screw (1)
Lever Knobs
Control Knobs
ENCLOSURE ASSEMBLY PARTS
Cassette lid ..........
1) To open the cassette lid, push on the eject lever.
Remove
a screw (1) fastening the cassette
lid. (its right
low side)
Be careful of holding a nut.
2) Pull off the cassette lid to upper side.
TOP Cover .......0-
Remove 6 screws (left and right ..... 3 screws (2) on each)
Control knobs (REC LEVEL) ..........
Pull off them to forward.
Lever knobs (TAPE SELECT, DOLBY NR) .........-
Pull off them to forward.
Bottom cover ..........
Remove
3 screws
fastening the bottom
cover.
(center
screw is long size.)
Remove the bottom cover from 3 pawls of mold chassis.
=
No, 4192
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