Read Sony ICF-C713L Service Manual online
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FM VCO VOLTAGE ADJUSTMENT
Adjust for the following value reading on digital voltmeter.
Adjustment Part
(confirmation)
L4
Frequency Display
87.5 MHz
108 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 MHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
LW VCO VOLTAGE ADJUSTMENT
Adjust for the following value reading on digital voltmeter.
Adjustment Part
(confirmation)
CT4
Frequency Display
153 kHz
279 kHz
Reading on Digital
More than 2.2 V
9.0 V
voltmeter
(Standard 2.4 V)
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2-2
CT1
162 kHz
243 kHz
MW VCO VOLTAGE ADJUSTMENT
Adjust for the following value reading on digital voltmeter.
Adjustment Part
L5
(confirmation)
Frequency Display
531 kHz
1,602 kHz
Reading on Digital
2.85 V
Less than 10 V
voltmeter
(Standard 9 V)
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2-1
CT2
621 kHz
1,404 kHz
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
• LW/MW Section
Setting :
RADIO ON button : On
BAND button
RADIO ON button : On
BAND button
: LW/MW
• Connecting Level Meter (FM, LW and MW)
• 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
telescopic antenna
input terminal
input terminal
0.01
µ
F
set
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, LW and MW)
digital
voltmeter
voltmeter
speaker terminal
set
TP (VT)
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