Sony Dream Machine ICF-C218, Руководство по обслуживанию, Страница: 7 / 16

7
ICF-C218
SECTION 3
ELECTRICAL ADJUSTMENTS
AM Section
0dB=1
µ
V
Procedure :
BAND : AM
VOLUME : 10mW
FM Section
Procedure :
BAND : FM
VOLUME : 10mW
• Repeat the procedures in each adjustment several times, and
the frequency coverage and tracking adjustments should be
finally done by the trimmer capacitors.
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1 455kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4 520kHz
CT1-4 1,750kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 620kHz
CT1-1 1,400kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 86.5MHz
CT1-3 109.5MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
confirm 86.5MHz
CT1-2 109.5MHz
TUNER SECTION
AM RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
Put the lead-wire
antenna close to
the set.
FM RF signal
generator
22.5kHz frequency deviation by
400Hz signal.
Output level : as low as possible
antenna
terminal
TP1(RF IN)
0.01
µ
F
set
8
Ω
speaker terminal
level meter