Service Manuals, User Guides, Schematic Diagrams or docs for : LG Audio AHA-FD770 fd770adj
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3. ADJUSTMENTS
1. Test/ADJUSTMENTS Point
TOP View
-6 -
BOTTOM View
-7-
2. Important
This set has aligned at the factory and normally will not require further adjustment. As a result, it is not recommended that
any attempt is made to modificate any circuit. If any parts are replaced or if anyone tampers with the adjustment,
realignment may be necessary.
Check power-source voltage.
Unless otherwise specified set the volume control to the position 5.
The normal frequency modulation in FM is 400Hz, 22.5kHz Dev.
3. Equipment Required
Nonmetallic Alignment Tools FM Signal Generator
FM Generator Test Tape : MTT-111N
Oscilloscope DC Voltmeter
Frequency Counter
4. FM Section
1) The FM IF Adjustment is not required.
2) FM Coverage Adjusment
DC Voltmeter................ Connect the Voltmeter to between point of the C23
Unit Step IF DC Voltmeter Adjustment
output
C23
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