Read Sony ICF-C201 / ICF-C205 (serv.man2) Service Manual online
7
ICF-C201/C205
SECTION 3
ELECTRICAL ADJUSTMENTS
AM Section
0dB=1
µV
Procedure :
BAND
: AM
VOLUME
: MIN
FM Section
Procedure :
BAND
: FM
VOLUME
: MIN
• Repeat the procedures in each adjustment several times, and
the frequency coverage and tracking adjustments should be
finally done by the trimmer capacitors.
finally done by the trimmer capacitors.
ICF-C205
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
455kHz
ICF-C205
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
520kHz
CT4
1,650kHz
ICF-C205
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
600kHz
CT1
1,400kHz
ICF-C201/C205
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
86.5MHz
CT3
109.5MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
confirm
86.5MHz
CT2
109.5MHz
TUNER SECTION
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
JW6 (ICF-C201)
JW7 (ICF-C205)
terminal
JW6 (ICF-C201)
JW7 (ICF-C205)
0.01
µ
F
set
8
Ω
speaker terminal
level meter
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