Sony CFD-W57 - Cd Radio Cassette-corder, Service Manual

Page: 17 / 74

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FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 87.5 MHz 108 MHz
Reading on Digital voltmeter 1.4
±
0.2 V 4.7
±
0.1 V
Adjustment Part <confirmation> L2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1 CT1
87.5 MHz 108 MHz
AM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 530 kHz 1,710 kHz
Reading on Digital voltmeter 1.0
±
0.1 V 5.3
±
0.2 V
Adjustment Part L4 <confirmation>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3 CT2
620 kHz 1,400 kHz
Adjustment Location: See page 18.
TUNER SECTION 0 dB = 1
µ
V
• FM Section
Setting:
BAND switch: FM
22.5 kHz frequency
deviation by 1 kHz signal
Output level : as low as possible
• AM Section
Setting:
BAND switch: AM
30% amplitude
modulation by 400 Hz signal
Output level : as low as possible
• Connecting Level Meter (FM and AM)
antenna terminal
(FH1)
FM RF signal
generator
0.01
µ
F
set
digital
voltmeter
100 k
Ω
JW16
TP (VT)
2
jack
set
32 Ω
level meter
(range: 0.5-5 V ac)
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
• Connecting Digital Voltmeter (FM and AM)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.