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TUNER SECTION
• RADIO switch
: ON
• VOLUME
: MIN
AM Section
BAND : AM
AM RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
FM Section
BAND : FM
FM RF signal
generator
22.5kHz frequency deviation
by 400Hz signal.
Output level : as low as possible
set
Adjustment Location :
[MAIN BOARD] (Component side)
ELECTRICAL ADJUSTMENTS
Put the lead-wire
antenna close to
the set.
0.01 F
L6
level meter
8 Ω
speaker output
T1: AM IF Alignment
IC1
SECTION 5
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
Adjust for a maximum reading on level meter.
T1
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
CT2
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT4
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
confirmation
CT3
CT2 : AM Frequency Coverage Adjustment
CT4 : FM Frequency Coverage Adjustment
L3 : FM Frequency Coverage Adjustment
– 11 –
AM IF ALIGNMENT
455kHz
520kHz
1,650kHz
600kHz
1,400kHz
86.5MHz
109.5MHz
86.5MHz
109.5MHz
L1 : AM Tracking Adjustment
CT3 : FM Tracking Adjustment
CT1 : AM Tracking Adjustment
L4 : AM Frequency
Coverage Adjustment
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