Sony CFD-444L - Page 22

ator Adiustment
FM
antenna input
98
MHz
PHONES
1 kHz,75
kHz
deviation
(100%)
I
mV
(60
dB)
monoufal
I MHz signal.
so that the
oscilloscope
waveform is
al.
VCO Adiustment
A)
Regular Method
Procedure:
FM
rf signal
generator
Carrier
frequency:
Modulation:
Output level:
98
MHz
1 kHz, 30%
1
mV
(60
dB)
47
pF
FM
antenna
input
frequency
counter
l .
Tune
the
set to
98
MHz
2.
Adjust
RVI
for l9
kHz
10.2
kHz
on
the
counter'
B)
Simple
Method
Procedure:
l.
Tune
the set
to the
FM
stereo
broadcasting
signal.
2.
Turn
RVI
clockwise
or counterclockwise
and
memorize
the
lighting-up
range
of the
FM
STEREO
stereo
lamP.
3. Secure
RVI at the
center
of the
lighting-up
range
of both turns
as
shown
below.
center
of
lighting-up
ranges
lighting-uP
rangc
O.01
pF
10
p.F/16
V
RVl
E
-1
6-
Adjust
for a
maximum
reading
on
VTVM.
FM IF
ALIGNMENT