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JVC KD-A11 - Page 5

JVC KD-A11
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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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