JVC RC-545L - Page 7

RC-545L/LB
FM RF Alignment
Input
(SSG):
Use
75Q
terminal,
modulation
400Hz
modulated
to
22.5kHz
deviation,
Connect
Hot
side
to
TP1
and
Cold
side
to
TP2.
Step Frequency Input Signal Place to be Set the V.
87.5MHz Maximum
P
109MHs
TP1
&
TP2
TCA
Repeat the Steps 1 & 2.
z TP1 & TP2 L2 90MHz Signal
106MHz 106MHz Signal
Repeat the Steps 4 & 5, and adjust for no further improvement.
FM MPX Alignment Dummy Antenna
A. Regular Method
1.
Connect
a
frequency
counter
to
the
test
point
TPS.
2.
Supply
the
monaural
signal
(98MHz,
60dB)
across
the
test
points
TP1
and
TP2.
3.
Adjust
the
variable
resistor
VR1
so
that
the
frequency
becomes
19kHz
+
100Hz.
B. Simplified Method
. Tune to a FM stereo broadcast.
2.
Set
the
variable
resistor
VR1
to
a
center
position
of
the
range
where
the
stereo
indicator
keeps
lighting.
=
Ri + R2= 800
C = 10pF
R1 : Output impedance of S.S.G.
Fig. 10
Parts Arrangement for Alignment
No. 1388