JVC R-S11L User Manual

6. FM/MW/LW Tuner Alignment Procedures
6-(1) FM Section
Descriminator, Center Meter, Distortion and Signal Gain
1. Press to FM position.
2. Connect an RF generator, 1 KHz modulation and 75 kHz
deviation, to the antenna terminals on the rear panel
through a dummy antenna.
3. Connect an Oscilloscope, Distortion Meter and VT VM
OSC to the Rec. Out jacks on the rear panel.
c114 L103 L102 4. Tune to a frequency where there is no broadcasting.
(©) (©) 5. Adjust a core indicated arrow (A) of T7131 so that the
: YY FM Tuning L.E.D. illuminates the center position.
: 6. Set the RF generator to 98 MHz.
1131 | ©© OO 7. Set the dial pointer to 98 MHz.
R138 : indi
8. Adjust a core indicated arrow of T131 so that the
MUTING TC5 tTc2 TC4 Tc1 ; fee? nea
CENTER (0) ee ANT distortion is minimized at a value less than 0.4 %.
Tracking and Sensitivity
Precaution: No adjustment is necessary. The tracking and
sensitivity have been adjusted properly and
completely at the factory. If any special
FREE RUN reason occasioned, take the following pro-
cedures carefully.
1C102 Low Frequency
1IC103 1. Connect an RF generator the antenna terminals on the
O rear panel through a dummy antenna.
109 2. Set an RF generator to 88 MHz, a modulation of 1 kHz
()
ee
and
a
deviation
of
75
kHz
to
provide
an
input
of
2
uV.
R168
3.
Connect
a
VTVM
and
an
Oscilloscope
to
the
Rec.
Out
jacks on the rear panel.
4. Set the dial pointer to 88 MHz.
5. Adjust the three coils L103, L102 and L101 in the
tuning gang to maximize the output.
SEPARATION
High Frequency
6. Set the RF generator to 108MHz, a modulation of
1kHz and a deviation of 75 kHz, to provide an input
of 2uV.
7. Set the dial pointer to 108 MHz.
8. Adjust the FM trimmers C114, TC2 and TC1 in the
tuning gang to maximize the output.
9. Repeat these high and low frequencies adjustment alter-
nately until maximum sensitivity is obtained.
Multiplex and Stereo Separation
Multiplex
Alignment
Location
on
TFC-28F
FM/AM
Tuner
1.
Set
the
Stereo
signal
generator
as
follows:
400
Hz
P.C.
Board
Assy
Fig.
8
modulation
frequency,
7.5kHz
deviation
pilot,
67.5 kHz main and sub carriers. Connect its output to
Frequency
Loop
.
an
RF
generator.
Counter
Antenna
—
AMSSG
Distortion
Meter
92
Connect
an
RF
generator
to
the
antenna
terminals
through a dummy antenna.
3. Connect a VTVM, an Oscilloscope and a Distortion
Meter to the Rec. Out jacks on the rear panel.
4. Set the RF generator to 98 MHz and output of 1 mV.
5. Set the dial pointer to 98 MHz.
6. Connect the Frequency Counter to 19 kHz Test Point.
(TP 109).
'
Hacewer
7.
Switch
off
the
pilot
signal
of
Stereo
Modulator.
FM
75
82:
75
2
PAD
8.
Adjust
R165
so
that
the
frequency
counter
indicates
Fig. 9 19 kHz (O~-50 Hz).
R-S11L
SiG No. 2517

JVC R-S11L Specifications

General

Brand	JVC
Model	R-S11L
Category	Stereo Receiver
Language	English