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® ADJUSTMENT
AUDIO SIGNAL
AUDIO SIGNAL
AC VTVM &
GENERATOR
'GENERATOR
SCOPE
ADJUST
CHECK
|
COUPLING
FREQ.
COUPLING
TEST POINT
(E)
TEST POINT
{X05-0010-13)
(F)
Tal5
Minimum deflection
= MPX ADJUSTMENT
STEP
COUPLING
FM SSG
VTVM &
SCOPE
ADJUST
CHECK
MOD. FREQ.
| SELECTOR
COUPLING
98MHz
98MHz
FM antenna | 400H2 (Mod.) | NORMAL
Bieta
(X05°0010-13) | agiust the variable resistor
40k Hz (Dev.)
}
until the indicator goes out
and bring thern back to the
10nV
98MHz
4
= MUTING
ADJUSTMENT
Coupling
the
SSG
to
the
antenna
terminal,
setting
MUTING
SW to be OFF, and VTVM
to recording jack.
As supply
the signal
(98MHz,
modulation
at 400Hz,
deviation of 75kHz,
input 1mV) to the set VTVM
in-
dicates
1V.
Next
set the MUTING
SW to ON
and
adjust the variable resistor VR4 (50ka) so that VTVM
indicates 0.5
~ 0.7V.
More check whether AM broadcast is received or not.
If
not,
check
whether
base
voltage
of transistor
Q1
is
supplied more 0.6V or not.
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