Read Sony ICF-303 / ICF-303L 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
– 5 –
– 6 –
• 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
L5
145 kHz
CT1
265 kHz
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
160 kHz
CT2
240 kHz
Adjustment Location: MAIN BOARD
ICF-303L:
LW SECTION
BAND switch : LW
(303L)
(303L)
CT2
LW TRACKING( 303L)
ADJUSTMENT
CT1-1
AM TRACKING (303)
ADJUSTMENT
CT1-4
AM FREQUENCY
COVERAGE (303)
ADJUSTMENT
L2
FM TRACKING
ADJUSTMENT
L4
FM FREQUENCY
COVERAGE
ADJUSTMENT
L5
AM FREQUENCY COVERAGE (303)
LW FREQUENCY COVERAGE (303L)
ADJUSTMENT
CT1-2
FM TRACKING
ADJUSTMENT
MAIN BOARD (COMPONENT SIDE)
CT1
LW FREQUENCY
COVERAGE (303L)
ADJUSTMENT
CT1-3
FM FREQUENCY
COVERAGE
ADJUSTMENT
L1
AM TRACKING (303)
LW TRACKING (303L)
ADJUSTMENT
16
Ω
set
earphone jack (EPJ1)
level meter
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
• 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.
ICF-303:
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L4
86.5 (87.35)
<64> MHz
CT1-3
109.5 (108.25) MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2
86.5 (87.35)
<68> MHz
CT1-2
109.5 (108.25)
<102> MHz
NOTE :
( ) : Italian model
< > : East European model
< > : East European model
ICF-303L:
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L4
86.5 MHz
CT1-3
109.5 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2
86.5 MHz
CT1-2
109.5 MHz
SECTION 3
ELECTRICAL ADJUSTMENTS
FM SECTION
BAND switch : FM
telescopic
antenna terminal
antenna terminal
0.01
µ
F
FM RF signal
generator
generator
400Hz, 30% FM modulation
frequency deviation
frequency deviation
±
22.5kHz
Output level: as low as possible
set
16
Ω
set
earphone jack (EPJ1)
level meter
• 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.
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L5
520 (516.5) kHz
CT1-4
1,650 (1,631.5) kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
600 (620) kHz
CT1-1
1,400 kHz
NOTE :
no mark : ( ) : Italian model
ICF-303:
AM SECTION
BAND switch : AM
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