Read Sony CFD-E70L Service Manual online
15
CFD-E70L
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
450 kHz
MW VCO VOLTAGE ADJUSTMENT
Frequency Display
Reading on Digital Voltmeter
531 kHz
0.9
±
0.5 V
1,611 kHz
5.2
±
0.6 V
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3-1
621 kHz
CT3
1,404 kHz
LW VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L4
153 kHz
0.6
±
0.3 V
Confirmation
279 kHz
5.0
±
0.15 V
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3-2
162 kHz
CT5
261 kHz
FM IF ADJUSTMENT
Adjust for a minimum reading on level meter
T2
10.7 MHz
FM VCO VOLTAGE ADJUSTMENT
Adjustment Part
Frequency Display
Reading on Digital Voltmeter
L2
108 MHz
3.0
±
0.3 V
Confirmation
87.5 MHz
1.3
±
0.4 V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1
87.5 MHz
CT1
108 MHz
Adjustment Location: TUNER and POWER board (See page 16)
TUNER SECTION
0 dB=1
µ
V
[MW/LW]
Setting:
Function : RADIO
RADIO BAND button : MW or LW
Function : RADIO
RADIO BAND button : MW or LW
[FM]
Setting:
Function : RADIO
RADIO BAND button: FM
Function : RADIO
RADIO BAND button: FM
• Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer ca-
pacitors.
pacitors.
• Remove FM antenna in FM adjustment.
AM RF signal
generator
30% amplitude
modulation by
400 Hz signal
Output level:
as low as possible
modulation by
400 Hz signal
Output level:
as low as possible
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
+
–
–
level meter
set
3.2
Ω
POWER board
CNP392 pin 2
CNP392 pin 2
POWER board
CNP392 pin 1
CNP392 pin 1
FM RF signal
generator
22.5 kHz frequency
deviation by 400 Hz
signal
Output level:
as low as possible
deviation by 400 Hz
signal
Output level:
as low as possible
+
–
–
level meter
POWER board
CNP392 pin 2
CNP392 pin 2
POWER board
CNP392 pin 1
CNP392 pin 1
set
3.2
Ω
0.01
µ
F
TUNER board
TP (GND)
TP (GND)
TUNER board
TP (ANT)
TP (ANT)
digital voltmeter
TP (VT)
TP (GND)
100 k
Ω
TUNER board
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