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4-2.
TUNER SECTION
@ FM Section
Setting :
FUNCTION
switch: RADIO
BAND switch
: FM
FM rf signal
generator
telescopic antenna
input
O.0LuF
22.5kHz frequency
deviation by 400Hz signal
output level: as low as possible
@ AM Section
Setting :
FUNCTION
switch: RADIO
BAND switch
>: AM
AM rf signal
generator
Put the lead-wire
antenna close to
aa
the set.
(GEaaEee
30% amplitude
modulation by
400Hz signal
VTVM
(range: 0.5—-5V ac)
Phones jack
@ Repeat the procedures in each adjustment several times,
and the frequency
coverage
and tracking
adjustments
should be finally done by the trimmer capacitors.
@ Remove telescopic antenna in FM section adjustments.
FM FREQUENCY COVERAGE
ADJUSTMENT
Adjust for a maximum reading on
VT VM.
L2
CT1-2
86.5MHz
109.5MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on VIVM.
Ll
86.5MHz
109.5MHz
AM FREQUENCY COVERAGE
ADJUSTMENT
Adjust for a maximum reading on
VT VM.
520kHz
1,780kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on
VT VM.
L3
CT1-3
620kHz
1,400kHz
AM IF ADJUSTMENT
Adjust for a maximum reading on
VT VM.
455kHz
Adjustment Location : main board
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