Sony PHC-Z10 Service Manual page 13

TUNER SECTION 0 dB = 1 µV
• FM Section
Setting:
BAND switch: FM
FM RF signal
generator
0.01 µF
22.5 kHz frequency
deviation by 1 kHz signal
Output level : as low as possible
• AM Section
Setting:
BAND switch: AM
AM RF signal
generator
Put the lead-wire
antenna close to
the AM loop
antenna.
30% amplitude
modulation by 400 Hz signal
Output level : as low as possible
• Connecting Level Meter (FM and AM)
32 Ω
set
J901 (phones)
• Connecting Digital Voltmeter (FM and AM)
digital
voltmeter
100 kΩ
TP1 (VT)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
antenna terminal
set
level meter
(range: 0.5-5 V ac)
FM FREQUENCY COVERAGE
CHECK
Frequency Display
Reading on Digital voltmeter
Adjustment Part <confirmation> <confirmation>
FM TRACKING CHECK
Adjust for a maximum reading on level meter.
<confirmation>
87.5 MHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
CFT1
450 kHz
AM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display
Reading on Digital voltmeter
Adjustment Part
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
621 kHz
Adjustment Location: See page 14.
87.5 MHz 108 MHz
1.65 ± 0.15V 4.0 ± 0.2 V
<confirmation>
108 MHz
531 kHz 1,611 kHz
0.75 ± 0.15 V 5.4 ± 0.2 V
L5 <confirmation>
CT1
1,404 kHz
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