Mitsubishi DA-C20 Service Manual page 12

5) Turn
off the Pilot signal
and
modulation
signal of the stereo
modulator. with a
frequency
counter connected
to Pin
(120),
adjust the vR so
that the frequ-
enqf
may
be
within the
range
of
76!0.2
kEz.
Turn
the pilot signal
oN
and
confirm that the stereo indicator
lights
up.
with the modulation
of the
stereo
modulator
set to either "R" or
"L", adjust
vR632
so as to
make
separation
maxj-mum.
THREADTNG
ON
DIAI
I
ADJUSTMENT
OF AM
SECT]ON
I.
Tracking Adjustment
1)
with the
SG's
sigmal
set
to
600 kHz and 400
I1z
to
30%
modu-
lation,
and
the indicator of
the
set tuned
to
60O
kHz, adjust
the
corlrANT (L27I)
and Corr-osc
(T271) so
that the
outPut
will
may become maximum.
2) with the
SG's
sig.nal set to
I,4OO kHz and
the indicator of
the set t1med
to
I
.
400 kHz,
adjust the
antenna
trirurcr
TC27l
and
local oscillation trimmer
TC272
in
a way
to
make
the
outPut
rnaximum.
3)
Repeat
f)
and
2) several times'
\i"
6)
7)
e-/
I
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