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JVC R-S11L User Manual

JVC R-S11L
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Stereo
Separation
9.
Switch
the
selector
of
Stereo
Modulator
to
left
channel
modulation.
10.
Adjust
R168
so
that
the
output
of
right
channel
is
minimized.
11.
Switch
the
selector
of
the
modulator
to
right
channel
modulation.
12.
Adjust
R168
so
that
the
left
channel
is
minimized.
13.
Set
R168
to
a
average,
if
the
separation
of
left
and
right
is
different.
Muting
Level
Note:
No
adjustment
is
necessary.
However,
if
the
check-
1.
2.
3:
up
is
required,
take
the
following
steps.
Release
the
MONO/FM
MUTE
OFF
pushbutton
during
this
adjustment
procedures.
Connect
a
VTVM
and
an
Oscilloscope
to
the
Rec.
Out
jacks
on
the
rear
panel.
Set
the
RF
generator
to
108
MHz,
a
modulation
of
1
kHz
and
a
deviation
of
75
kHz,
to
provide
an
input
of
8
uV.
.
Turn
R138
clockwise
and
remember
the
point
(or
position)
at
which
the
muting
ceases
operating.
.
Turn
R138
counterclockwise
slightly
so
that
the
output
level
drops
by
1
cB.
.
Attenuate
the
output
of
the
RF
generator
to
2
dB
from
8
uV
of
step
2
and
check
that
the
muting
is
still
operat-
ing.
6-(2)
MVV(LW)
Section
Note:
(
)
for
LW
Alignment
Procedures
Tracking
and
Sensitivity
Low
Frequency
1.
Connect
the
RF
generator
to
the
antenna
terminals
on
the
rear
panel,
set
this
to
600
kHz
(160
kHz)
with
30
%
modulation
at
400
Hz.
2.
Connect
an
AC
VTVM
and
an
oscilloscope
to
the
Rec.
out
jacks
on
the
rear
panel.
3.
Set
the
dial
pointer
to
600
kHz
(160
kHz).
4.
Adjust
OSC
coil
L351
(L352)
and
the
ferrite
bar
an-
tenna
core
to
maximize
the
output
signal.
Left
ferrite
bar
is
for
MW
(right
ferrite
bar
is
for
LW).
Refer
to
photo
below.
High
Frequency
5.
Set
the
RF
generator
to
1400
kHz
(350
kHz)
with
30
%
modulation
at
400
Hz.
6.
Set
the
dial
pointer
to
1400
kHz
(350
kHz).
7.
Adjust
the
trimmers
C361
(C369)
and
C373
(C374)
in
the
tuning
gang
so
that
the
output
signal
is
maximized.
8.
Repeat
these
high
and low
frequencies
adjustment
pro-
cedures
alternately
until
maximum
sensitivity
is
ob-
tained.
7.
Power
Amplifier
Idling
Current
Adjustment
Procedure
O
T.P
(L-E)
O
T.P
(L-CH)
©)
Left
Channel
Idling
C
Adjust
urrent
O
T.P
(R-E)
AO,
Right
Channel
Idling
Current
Adjust
Fig.
10
Adjustment
Location
on
TXX-253
Main
Amp.
P.C.
Board
Ass‘y
Precaution:
(1)
Allow
the
set
to
warm
up
at
least
5
minutes
before
connecting
aDC
VT
VM.
(2)
Must
keep
the
heatsinks
cooling
to
prevent
overheating
(
R-S11
and
consequent
destruction
of
the
semiconductor
junction
and
set
the
volume
control
to
minimum
during
these
adjustment
procedures.
):
for
Right
channel
Adjustment
L
No.
2517
Procedures:
1.
Turn
R719
and
(R720)
fully
counterclockwise
before
the
power
switch
on.
2.
Connect
a
DC
VTVM
to
the
Test
Point
L-CH
and
L-E
(R-CH
and
R-E).
3.
Adjust
R719
(R720)
for
DC
VTVM
reading
of
5
mV.

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JVC R-S11L Specifications

General IconGeneral
BrandJVC
ModelR-S11L
CategoryStereo Receiver
LanguageEnglish

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