HTPS-400 ADJUST BIAS PROCEDURE
(Mandatory when any output MOSFET transistors Q305,310,320,321,306,307,311,312 are replaced)
1. Amplifier should be unplugged and OFF.
2. Remove Amp assembly from cabinet.
3. Identify the Linear board assembly (PCB with the output transistors)
4. Adjust RP301 and RP302 fully Counter Clockwise. See diagram below.
5. Apply 120 VAC power to unit.
6. Verify LED is ON.
7. Connect voltmeter set to DC millivolt range to twin pins on terminal J303, on Linear board.
8. Verify initial voltage is less then 0.1 mV.
9. Adjust RP301 Clockwise until voltmeter reads
0.3 mV
+ the initial current from step #8.
10. Adjust RP302 Clockwise until voltmeter now reads
0.6 mV
+ the initial current from step #8.
11. Turn amplifier OFF. Disconnect AC power to unit.
12. Remove voltmeter from terminal J303.
13. Replace amp assembly back into cabinet.
Содержание HTPS-400
Страница 4: ...HTPS 400 SUBWOOFER 4 Detailed Specifications ...
Страница 5: ...HTPS 400 SUBWOOFER 5 Detailed Specifications Cont ...
Страница 6: ...HTPS 400 SUBWOOFER 6 Connections ...
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Страница 8: ...HTPS 400 SUBWOOFER 8 Operation ...
Страница 9: ...HTPS 400 SUBWOOFER 9 Troubleshooting ...
Страница 10: ...Amplifier Block Diagram HTPS 400 SUBWOOFER 10 ...
Страница 11: ...HTPS 400 SUBWOOFER 11 Packaging ...
Страница 23: ...HTPS 400 SUBWOOFER 23 Integrated Circuit Diagrams ...
Страница 24: ...HTPS 400 SUBWOOFER 24 Feature Board Assembly PCB ...
Страница 25: ...HTPS 400 SUBWOOFER 25 EMI FILTER Board Assembly PCB ...
Страница 26: ...HTPS 400 SUBWOOFER 26 LINEAR Board Assembly PCB ...
Страница 27: ...HTPS 400 SUBWOOFER 27 Power Supply Assembly PCB ...
Страница 28: ...Feature Board Assembly Schematic HTPS 400 SUBWOOFER 28 ...
Страница 29: ...Feature Board Assembly Schematic Cont HTPS 400 SUBWOOFER 29 ...
Страница 30: ...EMI Filter PCB HTPS 400 SUBWOOFER 30 ...
Страница 31: ...Linear Class B HTPS 400 SUBWOOFER 31 ...
Страница 32: ...Power Supply Assembly HTPS 400 SUBWOOFER 32 ...