EasyManuals Logo
Home>JVC>Cassette Player>KD-A66

JVC KD-A66 Service Manual

JVC KD-A66
55 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #19 background imageLoading...
Page #19 background image
KD-A66A/B/C/E/J/U
Adjustment
Standard
Set
the
computer
tester
to
the
TEST
Test
program:
3
and
MANUAL
modes,
set
the
test
program
(TEST
PRO)
switch
S3
to
ON,
then
set
both
S4
and
$5
to
ON.
2)
Press
the
PRESET
switch,
then
set
the
OPERATION
swtich
to
REC
PAUSE.
3)
Adjust
VR801
so
that
‘’58”
is
display-
ed
on
the
LEVEL
DETECT
indicator
of
the
computer
tester.
4)
After
the
above
Adjustment,
confirm
that
the
A/D
conversion
time
is
about
8
msec
in
the
A/D
converted
waveform
at
test
point
TP.
Set
the
computer
tester
to
the
TEST
and
MANUAL
modes,
set
the
test
program
(TEST
PRO)
switch
$3
to
ON,
then
set
the
both
$4
and
S5
to
ON.
2)
Set
the
OPERATION
switch
to
REC
PAUSE,
then
draw
out
the
post
pin.
3)
Set
the
test
program
swtich
S1to
+5V
and
apply
a
71
KHz
signal
to
LINE
IN
Then,
when
the
outut
level
of
this
signal
at
LINE
OUT
is
set
to
8
dB,
it
shall
vary
at
test
pins
and
205]
on
the
computer
circuit
board
as
shown
in
the
diagram
below.
Confirm
that
the
output
level
increases
in
steps
in
the
range
of
about
—4
dB
to
+4
dB
against
the
preset
value.
3
|Analog/
-15V+03V
Approx.
8m
sec
(Test
point:
A/D)
Test
program
switch:
3
Set
the
computer
tester
to
the
TEST
and
MANUAL
modes,
set
the
test
program
(TEST
PRO)
switch
S3
to
ON,
then
set
S4
to
ON.
2)
Press
the
PRESET
switch,
set
the
OPERATION
switch
to
REC
PAUSE,
then
draw
out
post
pin
H
and
set
S$1to
+5V.
3)
Apply
a
10
kHz
signal
to
LINE
IN.
Then,
when
the
output
level
of
this
signal
at
LINE
OUT
is
set
to
8
dB,
it
shall
vary
as
shown
in
the
diagram
below
when
measuring
the
signal
cur-
rent
at
the
record/playback
head.
With
a
normal
tape,
confirm
that
the
output
level
varies
in
the
same
increment
in
the
range
of
about
—4dB
to
+4dB.
(10
kHz,
steps
0
—
7)
Equalization
level
selec-
tion
operation
aust
a
se
a
Test
program:
2
Connect
a
100Q
resistor
between
the
blue
wire
of
the
record/playback
head
and
the
head
terminal,
then
insert
a
recordable
tape.
2)
Set
the
frequency
to
82
kHz
+
1
kHz
by
turning
the
oscillation
coil
L701
with
the
deck
set
in
the
REC/PLAY
mode.
3)
Raise
the
output
to
maximum
by
turning
coil
L702.
4)
Reduce
the
bias
current
leakage
at
test
points
TP
201
and
101
ro
less
than
—30
dB
by
coils
L104
and
L204.
5)
Set
the
computer
tester
to
the
TEST
and
MANUAL
modes,
set
the
test
program
(TEST
PRO)
switch
S3
to
on,
and
set
S5
to
ON.
Next,
press
the
PRESET
swtich,
then
set
the
deck
to
the
REC/PLAY
mode.
Confirm
that
the
bias
current
varies
in
the
range
of
10
to
30
R
of
the
initial
value.
current
regulation
Test
program:
1
—19—
No.
4193

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the JVC KD-A66 and is the answer not in the manual?

JVC KD-A66 Specifications

General IconGeneral
BrandJVC
ModelKD-A66
CategoryCassette Player
LanguageEnglish

Related product manuals