Read Sony ICF-C215 / ICF-C215L Service Manual online
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SECTION 3
ELECTRICAL ADJUSTMENTS
TUNER SECTION
AM/LW Section
Procedure :
BAND
: AM (C215)
LW (C215L)
LW (C215L)
VOLUME : MIN
FM Section
Procedure :
BAND
: FM
VOLUME : MIN
AM RF signal
generator
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
FM RF signal
generator
generator
22.5kHz frequency deviation by
400Hz signal.
Output level : as low as possible
400Hz signal.
Output level : as low as possible
antenna
terminal
(JW1)
terminal
(JW1)
0.01
µ
F
set
32
Ω
speaker terminal
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.
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
< >
: Italian model
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455kHz
C215
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
520kHz
<516.5kHz>
CT4
1,750kHz <1631.5kHz>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
620kHz
CT1
1,400kHz
C215L
LW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
140kHz
CT6
240kHz
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
140kHz
CT5
240kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
86.5MHz
<87.35MHz>
CT3
109.5MHz <108.25MHz>
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
86.5MHz
<87.35MHz>
CT2
109.5MHz <108.25MHz>
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