Sony ICF-703, Руководство по обслуживанию

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Put the lead-wire
antenna close to
the set.
AM RF signal
generator
400Hz, 30%
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.
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