Read Sony ICF-703 / ICF-703L Service Manual online
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
400Hz, 30%
AM modulation
Output level: as low as possible
AM modulation
Output level: as low as possible
16
Ω
set
earphone jack (EPJ1)
level meter
– 7 –
– 8 –
• 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.
LW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
CT6
145 kHz
<confirmation>
265 kHz
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1-2
160 kHz
CT5
240 kHz
Adjustment Location: MAIN BOARD
ICF-703L:
LW SECTION
BAND switch : LW
CT5
LW TRACKING(703L)
ADJUSTMENT
CT1-2
AM(703)/MW(703L)
FREQUENCY
COVERAGE
ADJUSTMENT
L4
FM FREQUENCY
COVERAGE
ADJUSTMENT
CT1-1
AM(703)/MW(703L)
TRACKING
ADJUSTMENT
L6,7
FM TRACKING
ADJUSTMENT
T1
AM(703)/MW(703L)
IF
ADJUSTMENT
CT1-4
FM
TRACKING
ADJUSTMENT
CT1-3
FM
FREQUENCY
COVERAGE
ADJUSTMENT
L5
AM(703)/MW(703L)
FREQUENCY
COVERAGE
ADJUSTMENT
– MAIN BOARD (COMPONENT SIDE) –
CT6
LW
FREQUENCY
COVERAGE (703L)
ADJUSTMENT
L1-1
AM(703)/MW(703L)
TRACKING
ADJUSTMENT
L1-2
LW (703L)
TRACKING
ADJUSTMENT
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