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SW OSC Voltage Adjustment
(E3, EA, MY, SP, HK, IA, PX model)
Setting:
Band: SW
Procedure:
1. Connect digital Voltmeter to diode D1 center lead and ground.
2. Adjust for a following value reading on digital voltmeter.
Adjustment
part
SW Tracking Adjustment
(E3, EA, MY, SP, HK, IA, PX model)
Setting:
Band: SW
Procedure:
Adjust for maximum reading on level meter.
Set frequency
• Repeat the procedures is each adjustment several times, and the
frequency coverage and tracking adjustment should be finally done
by the trimmer capacitors.
Adjustment Location
[TCB BOARD] — Component Side —
AM RF SSG
set
level meter
SPEAKER terminal
AM ANTENNA terminal
30% amplitude
modulation by
400Hz signal
D1, CV2, T2
SW OSC Voltage
Adjustment
IC41
CV2 CV1
D1
T2
T1
TM1
CV1, T1
SW Tracking
Adjustment
• Abbreviation
EA: Saudi Arabia model.
MY: Malaysia model.
SP:
Singapore model.
HK: Hong Kong model.
IA:
Indonesian model.
E3:
With SW tuner model.
Set frequency
Reading on digital
voltmeter
SW
5.95 MHz
17.9 MHz
T2
CV2
1.2
±
0.1 V
8.5
±
0.2 V
SW
T1
CV1
7 MHz
17 MHz
Adjustment
part
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Содержание HCD-H991AV
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