Read Sony CFD-V77S Service Manual online
— 11 —
5-3.
TUNER SECTION
•
Switch Location
VOLUME
: MAX
MEGA BASS
: OFF
PRESET SOUND MODE : OFF
Setting :
FUNCTION switch : RADIO
BAND : MW
Signal generator
FUNCTION switch : RADIO
BAND : MW
Signal generator
Setting :
FUNCTION switch : RADIO
BAND : FM
Signal generator
FUNCTION switch : RADIO
BAND : FM
Signal generator
Setting :
FUNCTION switch : RADIO
BAND : SW1/SW2
FINE TUNING knob : mechanical mid
FUNCTION switch : RADIO
BAND : SW1/SW2
FINE TUNING knob : mechanical mid
0 dB = 1 µV
• Repeat the procedures in each adjustment several times for the
maximum level meter indication.
• The frequency coverage and tracking adjustments should be
finally done by the trimmer capacitors.
FM SECTION
(
) : Saudi Arabia model
[
] : AEP model
<
> : Italian model
Adjustment Location : Main board (See page 13)
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
signal.
Output level : as low as possible
MW RF signal
generator
generator
0.01
µ
F
FM RF signal
generator
generator
telescopic
antenna
input
antenna
input
75kHz (100%) amplitude modulation
by 1kHz signal.
Output level : as low as possible
by 1kHz signal.
Output level : as low as possible
32
Ω
set
+
–
level meter
J301 (phones)
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
86.5 MHz (87.35 MHz )[87.0 MHz]<87.35MHz>
CT2
109.5 MHz (107.8 MHz)[108.3 MHz]<108.25 MHz>
MW SECTION
SW SECTION
set
AM rf signal
generator
generator
telescopic antenna
input
input
10 pF
30% amplitude modulation by 400 Hz
signal output level : as low as possible
signal output level : as low as possible
32
Ω
set
+
–
level meter
J301 (phones)
SW1 TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L5
CT5
2.2 MHz
7.3 MHz
SW1 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L6
CT6
2.2 MHz
7.3 MHz
SW2 TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L7
CT9
6.8 MHz
22.5 MHz
SW2 FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L8
CT10
6.8 MHz
22.5 MHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
10.7 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
86.5 MHz(87.35 MHz )[87.0 MHz]<87.35 MHz>
CT1
109.5 MHz(108.25 MHz )[108.3 MHz]<108.25 MHz>
MW IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
455 kHz
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
620 kHz
CT3
1,400 kHz
MW FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
520 kHz (516 kHz)<516 kHz>
CT4
1,680 kHz (1,630 kHz)<1,630 kHz>
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