Sony ICF-703 - Section 3 Electrical Adjustments

– 6 –
Put the lead-wir
e
antenna close to
the set.
AM RF signal
generator
400Hz, 30%
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.
ICF-703:
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L4 86.5 (87.35) MHz
CT1-3 109.5 (108.25) MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L6, L7 86.5 (87.35) MHz
CT1-4 109.5 (108.25) MHz
NOTE :
( ) : Italian model
ICF-703L:
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
L6, L7 86.5 MHz
CT1-4 109.5 MHz
SECTION 3
ELECTRICAL ADJUSTMENTS
FM SECTION
BAND switch : FM
telescopic
antenna terminal
0.01µF
FM RF signal
generator
400Hz, 30% FM modulation
frequency deviation ±22.5kHz
Output level: as low as possible
set
16Ω
set
earphone jack (EPJ1)
level mete
r
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
AM/MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L5 520 (516.5) kHz
CT1-2 1,650 (1,631.5) kHz
AM/MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1-1 600 (620) kHz
CT1-1 1,400 kHz
NOTE :
( ) : Italian model
AM/MW IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
455 kHz
AM (703)/MW (703L) SECTION
BAND switch : AM
16Ω
set
earphone jack (EPJ1)
level mete
r