Section 3 Electrical Adjustments - Sony ICF-703 Service Manual

FM SECTION
BAND switch : FM
FM RF signal
generator
400Hz, 30% FM modulation
frequency deviation 22.5kHz
Output level: as low as possible
set
earphone jack (EPJ1)
• 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
CT1-3
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L6, L7
CT1-4
NOTE :
( ) : Italian model
ICF-703L:
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter
L4
CT1-3
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L6, L7
CT1-4
SECTION 3
ELECTRICAL ADJUSTMENTS
telescopic
antenna terminal
0.01 F
set
level meter
16
86.5 (87.35) MHz
109.5 (108.25) MHz
86.5 (87.35) MHz
109.5 (108.25) MHz
86.5 MHz
109.5 MHz
86.5 MHz
109.5 MHz
AM (703)/MW (703L) SECTION
BAND switch : AM
AM RF signal
generator
400Hz, 30%
AM modulation
Output level: as low as possible
set
earphone jack (EPJ1)
• 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
CT1-2
AM/MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1-1
CT1-1
NOTE :
( ) : Italian model
AM/MW IF ADJUSTMENT
Adjust for a maximum reading on level meter
– 6 –
Put the lead-wire
antenna close to
the set.
level meter
16
520 (516.5) kHz
1,650 (1,631.5) kHz
600 (620) kHz
1,400 kHz
T1
455 kHz