Read Sony ICF-M760L Service Manual online
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SECTION 3
ELECTRICAL ADJUSTMENTS
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a reading on digital voltmeter.
L104
87.5 MHz
2.7 ± 0.1 V
Confirm
108 MHz
10.2 ± 1 V
Note
:
Not use the FM RF signal generator in this adjustment.
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L103
87.5 MHz
CT101
108 MHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a reading on digital voltmeter.
L2
531 kHz
2.8 ± 0.1 V
Confirm
1602 kHz
8.8 ± 1 V
Note
:
Not use the AM RF signal generator in this adjustment.
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1–1
603 kHz
CT1
1404 kHz
LW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a reading on digital voltmeter.
CT2
153 kHz
2.3 ± 0.1 V
Confirm
279 kHz
8.1 ± 1 V
Note
:
Not use the AM RF signal generator in this adjustment.
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1–2
162 kHz
CT3
243 kHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T101
450 kHz
+
–
–
level meter
set
EARPHONE jack
32
Ω
JW104
+
–
–
digital voltmeter
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
done by the trimmer capacitors.
FM SECTION
Setting:
BAND switch: FM
BAND switch: FM
FM RF signal
generator
generator
400 Hz, 30% FM modulation
frequency deviation ± 22.5 kHz
Output level: as low as possible
frequency deviation ± 22.5 kHz
Output level: as low as possible
telescopic antenna
input
input
AM SECTION
Setting:
BAND switch: MW/LW
BAND switch: MW/LW
AM RF signal
generator
generator
400 Hz, 30%
AM modulation
Output level: as low as possible
AM modulation
Output level: as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
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