Read Sony ICF-M410L Service Manual online
5
ICF-M410L
SECTION 3
ELECTRICAL ADJUSTMENTS
BAND : AM
• Repeat the procedures in each adjustment several times for the
maximum level meter indication.
• The frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
MW/LW SECTION
FM SECTION
[Adjustment Location : Main board] (Component side)
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
signal.
Output level : as low as possible
AM RF signal
generator
generator
0.01
µ
F
FM RF signal
generator
generator
telescopic
antenna
terminal
antenna
terminal
75kHz (100%) amplitude modulation
by 1kHz signal.
Output level : as low as possible
by 1kHz signal.
Output level : as low as possible
16
Ω
set
+
–
level meter
Speaker terminal (EPJ301)
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T15
450 kHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L6
87.5 MHz
CT3
108 MHz
BAND : FM
MAIN BOARD
(Component side)
CT2
LW TRACKING
adjustment
LW TRACKING
adjustment
CT4
LW FREQUENCY
COVERAGE
adjustment
LW FREQUENCY
COVERAGE
adjustment
L4
MW FREQUENCY
COVERAGE
adjustment
MW FREQUENCY
COVERAGE
adjustment
T1
AM IF
adjustment
AM IF
adjustment
L6,CT3
FM TRACKING
adjustment
FM TRACKING
adjustment
CT1
MW TRACKING
adjustment
MW TRACKING
adjustment
MW/LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
LW
ANT102
162 kHz
CT2
243 kHz
MW
ANT102
603 kHz
CT1
1,404 kHz
MW/LW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
LW
CT4
153 kHz
MW
L4
531 kHz
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