Read Sony CFD-575 / CFD-577 Service Manual online
– 9 –
TUNER SECTION
• Switch location
FUNCTION
: RADIO
VOLUME
: MAX
MEGA BASS
: mechanical center
ROTARY EQUALIZER : center click
AM Section
BAND : AM
FM Section
BAND : FM
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
done by the trimmer capacitors.
AM IF ALIGNMENT
Adjust for a maximum reading on level meter.
CFT1
455kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust part
Frequency display
Reading on digital
voltmeter.
Confirmation
530kHz
0.9 ± 0.2V
L4
1,710kHz
5.6 ± 0.2V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
620kHz
CT2
1,400kHz
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust part
Frequency display
Reading on digital
voltmeter.
Confirmation
87.5MHz
1.7 ± 0.2V
L2
108MHz
4.0 ± 0.2V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
87.5MHz
CT1
108MHz
Adjustment Location : MAIN board (See page 12)
Frequency Coverage Adjustment
Setting :
[MAIN BOARD]
(Conductor side)
(Conductor side)
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
Output level : as low as possible
telescopic
antenna
terminal
antenna
terminal
0.01
µ
F
set
32
Ω
+
–
J302(phones)
level meter
R3
C83
+
–
Digital voltmeter
(DC range)
3. Phase Check
Mode : Playback
4. After the adjustment, lock the screws with locking compound.
Adjustment Location :
V
H
in phase
90
°
45
°
135
°
180
°
good
wrong
set
L-CH
R-CH
screen pattern
test tape
P-4-A063
(6.3kHz, –10dB)
P-4-A063
(6.3kHz, –10dB)
Osilloscope
J302 (phones)
32
Ω
32
Ω
Deck A
Deck B
Window (C)
cassette
cassette
Screwdriver
Window (C)
cassette
cassette
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