Read Sony CFD-W57L Service Manual online
– 17 –
TUNER SECTION 0 dB = 1
µ
V
• FM Section
Setting:
BAND switch: FM
BAND switch: FM
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
• MW/LW Section
Setting:
BAND switch: MW or LW
BAND switch: MW or LW
30% amplitude
moudulation by 400 Hz signal
Output level : as low as possible
moudulation by 400 Hz signal
Output level : as low as possible
• Connecting Level Meter (FM, MW and LW)
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
87.5 MHz
108 MHz
(65 MHz)
Reading on Digital voltmeter
1.4
±
0.2 V
3.5
±
0.1 V
(7.3
±
0.2 V)
Adjustment Part
<confirmation>
L2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
87.5 MHz (68 MHz)
108 MHz (102 MHz)
MW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
531 kHz
1,611 kHz
Reading on Digital voltmeter
0.9
±
0.1 V
5.7
±
0.1 V
Adjustment Part
L4
CT2
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-1
CT4
621 kHz
1,404 kHz
LW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
153 kHz
279 kHz
Reading on Digital voltmeter
0.6
±
0.15 V
5.7
±
0.1 V
Adjustment Part
<confirmation>
CT3
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-2
CT5
162 kHz
261 kHz
( ) : East European model
Adjustment Location: See page 18.
antenna terminal
(FH1)
(FH1)
FM RF signal
generator
generator
0.01
µ
F
set
digital
voltmeter
voltmeter
100 k
Ω
JW44
TP (VT)
phones jack
set
32
Ω
level meter
(range: 0.5-5 V ac)
(range: 0.5-5 V ac)
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
• Connecting Digital Voltmeter (FM, MW and LW)
• 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.
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