JVC KD-A66 Service Manual

KD-A66A/B/C/E/J/U
Maintenance
To get long, trouble-free service, maintenance is important.
Do not forget cleaning and demagnetizing.
Cleaning
After
Jong
use,
the
heads
and
tape
part
—
capstan,
pinch
roller,
etc.
—
will
become
dirty
with
dust
or
magnetic
parti-
cles.
Dirty
heads
cause
imperfect
erasing
or
high
frequency
drop-off.
A
dirty
capstan
and
pinch
roller
will
cause
un-
stable
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 sur-
face where the tape comes into contact with the head.
(It is effective to moisten the cotton with alcohol.)
2. Pinch roller 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.
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 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.
No. 4193
Removal of the Main
Parts
Observe
care
in
handling
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
per-
formance.
ENCLOSURE ASSEMBLY PARTS
@.
Cassette
door...
.Depress
the
EJECT
button
to
open
the
cassette
door
Slide
off
the
cassette
door
upwards
(about
5
mm)
to
unlock
its
pawls
of
both
sides.
Remove
the
cassette
door
forward.
Eject button
Fig. 13
@
Topcover......
Remove
4
screws
fastening
the
top
cover.
Control
knobs
(INPUT
LEVEL,
OUTPUT
LEVEL)
and
Lever Knobs (ANRS, TAPE SELECT)
otalGeiah © wl edn Bees Pull off them forward.
Screws
Fig. 14
Lever knobs Control knobs
@ Bottomcover....Remove 5. screws fastening the
bottom cover.
@ Mecha. control switches assembly .....
(When adjusting or replacing REC/PB heads or Erase
head)
Remove 3 screws positioned below the mecha. control
switches (on the bottom of the deck) and pull the
control section forwards — no need of removing the
front panel assembly.
@ Front plate assembly .....
1) Remove a screw fastening the bracket to mechanical
assembly.

JVC KD-A66 Specifications

General

Brand	JVC
Model	KD-A66
Category	Cassette Player
Language	English