Read Sony ICF-C713 Service Manual online
telescopic antenna
input terminal
input terminal
0.01
µ
F
set
– 7 –
FM VCO VOLTAGE ADJUSTMENT
Adjust for the following value reading on digital voltmeter.
Adjustment Part
<confirmation>
L4
Frequency Display
87.5 MHz
108.0 MHz
Reading on Digital
More than 1.2 V
9.5 ± 1.0 V
voltmeter
Standard 1.6 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT3
87.5 MHz
108.0 MHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
AM VCO VOLTAGE ADJUSTMENT
Adjust for the following value reading on digital voltmeter.
Adjustment Part
L5
<confirmation>
Frequency Display
530 kHz (531 kHz)
1,710 kHz (1,602 kHz)
Reading on Digital
2.75 V
Less than 11.0 V
voltmeter
Standard 10.0 V
(Less than 10.0 V)
(Standard 9.0 V)
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
CT2
580 kHz (621 kHz)
1,490 kHz (1,404 kHz)
( ) : AEP, Italian model
Adjustment Location : See page 8.
22.5 kHz frequency
deviation by 400 Hz signal
Output level : as low as possible
deviation by 400 Hz signal
Output level : as low as possible
30 % amplitude
modulation by 400 Hz signal
Output level : as low as possible
modulation by 400 Hz signal
Output level : as low as possible
• FM Section
Setting :
RADIO ON button : On
BAND button
RADIO ON button : On
BAND button
: FM
• AM Section
Setting :
RADIO ON button : On
BAND button
RADIO ON button : On
BAND button
: AM
• Connecting Level Meter (FM and AM)
• Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer
capacitors.
capacitors.
0 dB = 1 µV
SECTION 3
ELECTRICAL ADJUSTMENTS
FM RF signal
generator
generator
AM RF signal
generator
generator
Put the power cord
antenna close to
the set.
antenna close to
the set.
level meter
(range: 0.5 - 5 V ac)
(range: 0.5 - 5 V ac)
8
Ω
• Connecting Digital Voltmeter (FM and AM)
digital
voltmeter
voltmeter
speaker terminal
set
TP (VT)
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