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<TUNER Adjustment>
1. VT Check (AM)
Requirements
•
Measuring instrument: Digital multimeter
Test points: VT, GND
1) Connect the digital multimeter between VT and GND.
2) Set the function to AM, and tune the receiving frequency of the unit at 1710kHz.
3) Check that the digital multimeter ranges under 8.5V.
4) Tune the receiving frequency of the unit at 530kHz.
5) Check that the digital multimeter ranges above 0.6V.
2. VT Adjustment and Check (FM)
Requirements: Same as the above.
1) Connect the digital multimeter between VT and GND.
2) Set the function to FM, and tune the receiving frequency of the unit at 108.0MHz.
3) Adjust L906 so that the digital multimeter ranges at 7.0V±0.1V.
4) Tune the receiving frequency of the unit at 87.5MHz.
5) Check that the digital multimeter ranges under 0.4V.
3. Clock Check (AM)
Requirements
•
Measuring instrument: Frequency counter
Test point: CLK, GND
1) Connect the frequency counter between CLK and GND.
2) Set the function to AM, and tune the receiving frequency of the unit at 1710kHz.
3) Check that the frequency counter ranges at 2160kHz±45Hz.
Содержание Z-A85
Страница 26: ...26 SCHEMATIC DIAGRAM 1 MAIN 1 2 AMP SECTION...
Страница 27: ...27 SCHEMATIC DIAGRAM 2 MAIN 2 2 TUNER SECTION...
Страница 29: ...29 SCHEMATIC DIAGRAM 3 FRONT DECK...
Страница 31: ...31 SCHEMATIC DIAGRAM 4 KEY CD MIC FAN...
Страница 33: ...33 SCHEMATIC DIAGRAM 5 PT...
Страница 35: ...35 IC BLOCK DIAGRAM...
Страница 36: ...36 FL BJ824GNK GRID ASSIGNMENT ANODE CONNECTION PIN CONNECTION GRID ASSIGNMENT ANODE CONNECTION PIN CONNECTION...
Страница 59: ...2 11 IKENOHATA 1 CHOME TAITO KU TOKYO 110 8710 JAPAN TEL 03 3827 3111 2000068 921338...
