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ZS-PS20CP
14
SECTION 4
ELECTRICAL ADJUSTMENTS
TUNER SECTION
0 dB = 1
μV
• AM Section
Setting:
RADIO BAND•AUTO PRESET button: AM
Setting:
RADIO BAND•AUTO PRESET button: AM
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
30% amplitude
modulation by
400 Hz signal
modulation by
400 Hz signal
• FM Section
Setting:
RADIO BAND•AUTO PRESET button: FM
Setting:
RADIO BAND•AUTO PRESET button: FM
ANT2
FM RF signal
generator
generator
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
deviation by 1 kHz signal
output level : as low as possible
0.01
μF
set
• Connecting Level Meter (FM, AM)
J jack (J321)
set
32
Ω
level meter
(range: 0.5–5 V ac)
(range: 0.5–5 V ac)
• Connecting Digital Voltmeter (FM, AM)
digital
voltmeter
voltmeter
100 k
Ω
TP (VT)
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be fi nally
done by the trimmer capacitors.
done by the trimmer capacitors.
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T1
450 kHz
AM FREQUENCY COVERAGE ADJUSTMENT
Frequency Display
530 kHz
1,610 kHz
Reading on Digital voltmeter
0.8 ± 0.1 V
5.0 ± 0.6 V
Adjustment Part
L3
<confi rmation>
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
ANT1
CT3
620 kHz
1,400 kHz
FM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
L6
10.7 MHz
FM FREQUENCY COVERAGE ADJUSTMENT
Frequency Display
87.5 MHz
108 MHz
Reading on Digital voltmeter
1.5 ± 0.5 V
3.0 ± 0.3 V
Adjustment Part
<confi rmation>
L2
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1
87.5 MHz
108 MHz
Adjustment Location: See page 15.
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