Tuner Section - Sony CFD-S700 Service Manual

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CFD-S700
QQ
3 7 63 1515 0

TUNER SECTION

0 dB = 1 µV
• FM Section
Setting:
RADIO (BAND) button: FM
FM RF signal
generator
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
• AM Section
Setting:
RADIO (BAND) button: AM
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
TE
L 13942296513
• Connecting Level Meter (FM and AM)
32 Ω
set
i jack (J321)
• Connecting Digital Voltmeter (FM and AM)
100 kΩ
TP (VT)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
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.
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TP (JW1)
0.01 µ F
set
Put the lead-wire
antenna close to
the set.
level meter
(range: 0.5–5 V ac)
digital
voltmeter
x
ao
y
i
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8
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
FM FREQUENCY COVERAGE
Frequency Display
Reading on Digital voltmeter
Adjustment Part
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
87.5 MHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
AM FREQUENCY COVERAGE
Frequency Display
Q Q
3
6 7
1 3
Reading on Digital voltmeter
Adjustment Part
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
620 kHz
Adjustment Location: See page 15.
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.
2 9
9 4
2 8
T2
10.7 MHz
ADJUSTMENT
87.5 MHz
108 MHz
1.3 ± 0.3 V
3.0 ± 0.2 V
<confirmation>
CT1
108 MHz
T1
450 kHz
ADJUSTMENT
530 kHz
1,710 kHz
1 5
0 5
8
2 9
9 4
1.0 ± 0.1 V
5.3 ± 0.7 V
L4
<confirmation>
CT3
1,400 kHz
m
co
9 9
L2
2 8
9 9

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