Read Sony ICF-C211 / ICF-C211L Service Manual online
– 7 –
SECTION 3
ELECTRICAL ADJUSTMENTS
TUNER SECTION
AM/LW Section
Procedure :
BAND
: AM (C211)
LW (C211L)
LW (C211L)
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.
done by the trimmer capacitors.
< > : Italian model
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455kHz
C211
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
C211L
LW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
145kHz
CT6
265kHz
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
145kHz
CT5
265kHz
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>
Click on the first or last page to see other ICF-C211 / ICF-C211L service manuals if exist.