CFD-G70L - Sony Audio Service Manual (repair manual). Page 14

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14
CFD-G70L
MW IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
(     ): AR
MW FREQUENCY COVERAGE CHECK
Frequency Display
531 kHz
1,611 kHz
(530 kHz)
(1,610 kHz)
Reading on Digital voltmeter
0.9 
± 0.4 V
5.2 
± 0.5V
Adjustment Part
<confirmation>
<confirmation>
(     ): AR
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT3
621kHz (620 kHz)
1,404 kHz (1,400kHz)
LW FREQUENCY COVERAGE CHECK
Frequency Display
153 kHz
279 kHz
Reading on Digital voltmeter
0.6 
± 0.2 V
5.0 
± 0.2V
Adjustment Part
< L 4 >
<confirmation>
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT5
162 kHz
261 kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
10.7 MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Frequency Display
87.5 MHz
108 MHz
Reading on Digital voltmeter
1.3 
± 0.4 V
3.0 
± 0.3 V
Adjustment Part
<confirmation>
L2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
87.5 MHz
108 MHz

Adjustment Location : Main board (See page 16)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
 TUNER  SECTION
 MW/LW Section
Function switch : MW/LW
Volume
: MIN
 FM Section
Function switch : FM
Volume
: MIN
• Connecting Level Meter (FM/MW/LW)
• Connecting Digital Voltmeter (FM/MW/LW)
AM  RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
Put the lead-wire
antenna close to 
the set.
FM RF signal
generator
33.75kHz frequency deviation by 
1kHz signal.
Output level : as low as possible
telescopic
antenna
terminal
0.01
µF
 0dB = 1 
µV

J391 ( i jack)
set
32 
Ω
level meter
(range: 0.5–5 V ac)
digital
voltmeter
100 k
Ω
TP (VT)
Display
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