– 13 –
FM FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 87.5 MHz 108 MHz
Reading on Digital voltmeter 1.6 ± 0.4 V 4.3 ± 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
MW FREQUENCY COVERAGE
CHECK
Frequency Display 531 kHz 1,611 kHz
Reading on Digital voltmeter 0.8
+ 0.7 V
5.0
+ 1.2 V
– 0.5 V – 0.6 V
Adjustment Part <confirmation> <confirmation>
MW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-1 CT3
621 kHz 1,404 kHz
LW FREQUENCY COVERAGE
ADJUSTMENT
Frequency Display 153 kHz 279 kHz
Reading on Digital voltmeter 0.7
+ 0.3 V
5.3 ± 0.1 V
– 0.4 V
Adjustment Part <confirmation> L4
LW TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3-2 CT5
162 kHz 261 kHz
Adjustment Location: See page 14.
digital
voltmeter
100 k
Ω
TP (VT)
(JW17)
2
jack (J301)
set
32
Ω
level meter
(range: 0.5–5 V ac)
Put the lead-wire
antenna close to
the set.
AM RF signal
generator
TP (FM ANT)
FM RF signal
generator
0.01
µ
F
set
TUNER SECTION 0 dB = 1 µV
• FM Section
Setting:
RADIO (BAND) switch: FM
75 kHz frequency
deviation by 1 kHz signal
output level : as low as possible
• MW/LW Section
Setting:
RADIO (BAND) switch: MW or LW
30% amplitude
modulation by
400 Hz signal
• Connecting Level Meter (FM, MW and LW)
• 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.
w
w
w
.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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