Sony CFD-EX35L Service Manual page 14

CFD-EX35L
0dB = 1 µV
TUNER SECTION
AM (MW/LW) Section
RADIO BAND : AM (MW or LW)
AM RF signal
generator
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
FM Section
RADIO BAND : FM
FM RF signal
generator
33.75kHz frequency deviation by
1kHz signal.
Output level : as low as possible
• Connecting Level Meter (FM and AM)
set
J391 ( i )
• Connecting Digital Voltmeter (FM and AM)
100 k Ω
TP CV
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
14
Put the lead-wire
antenna close to
the set.
0.01 µ F
telescopic
antenna
terminal
level meter
(range: 0.5–5 V ac)
32 Ω
digital
voltmeter
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
MW FREQUENCY COVERAGE ADJUSTMENT
Frequency Display
Reading on Digital voltmeter
Adjustment Part
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-1
621 kHz
LW FREQUENCY COVERAGE ADJUSTMENT
Frequency Display
Reading on Digital voltmeter
Adjustment Part
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-2
162 kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
FM FREQUENCY COVERAGE ADJUSTMENT
Frequency Display
Reading on Digital voltmeter
Adjustment Part
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
87.5 MHz
Adjustment Location : TUNER board (See page 16)
450 kHz
531 kHz 1,611 kHz
0.9 ± 0.5 V 5.2 ± 0.6 V
<confirmation> <confirmation>
CT3
1,404 kHz
153 kHz 279 kHz
0.6 ± 0.3 V 5.0 ± 0.15 V
L4 <confirmation>
CT5
261 kHz
10.7 MHz
87.5 MHz 108 MHz
1.3 ± 0.4 V 3.0 ± 0.3 V
<confirmation> L2
CT1
108 MHz