Infinity-Prelude_MTS-sub-sm 电路图 维修手册.pdf

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1、PRELUDE MTS SUBWOOFER SERVICE MANUAL Infinity Systems, Inc 250 Crossways Park Dr. Woodbury, New York 11797REV 6 6/2007 RadioFans.CN 收音机爱 好者资料库 Prelude MTS CONTENTS SPECIFICATIONS .3 DETAILED SPECIFICATIONS .4 CONTROLS turn power switch ON. 6. Verify LED illuminates on the front gain control dial, un

2、less you have disconnected the plug. 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 unt

3、il 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. 15 Prelude MTS Subwoofer 16 Prelude Amp Assembly Parts List Part#DescriptionQtyDesignator Prelud

4、e MTS Subwoofer 17 Prelude Amp Assembly Parts List (Cont.) Part#DescriptionQtyDesignator Prelude MTS Subwoofer 18 Prelude Amp Assembly Parts List (Cont.) Part#DescriptionQtyDesignator Prelude MTS Subwoofer 19 Prelude Amp Assembly Parts List (Cont.) Part#DescriptionQtyDesignator Prelude MTS Subwoofer

5、 21 Prelude Amp Assembly Parts List (Cont.) Part#DescriptionQtyDesignator Prelude MTS Subwoofer 22 Prelude Amp Assembly Parts List (Cont.) Part#DescriptionQtyDesignator 630049 PCB, INPUT Prelude MTS Subwoofer 23 Prelude Amp Assembly Parts List (Cont.) Part#DescriptionQtyDesignator Prelude MTS Subwoo

6、fer 24 OPAMP, QUAD 14P DIL TL074/084, LM324N COMPARATOR U102, U103, U201, U202, U203, U301, U306 OUTPUT C V+V- OUTPUT B -INPUT A-INPUT D -INPUT B-INPUT C +INPUT A+INPUT D +INPUT B+INPUT C OUTPUT AOUTPUT D14 11 1 4 13 10 2 5 12 9 3 6 87 A BC D OPAMP, DUAL 8PIN DIL TL082 U101 00095 2 Base 3 Collector

7、1 Emitter12 3 TRANS, NPN 150V 0.6A 2N5551, 2N4401, Q303, Q308, Q322, Q323, Q204, Q314, Q315, Q317, Q501 2 Base 3 Collector 1 Emitter12 3 TRANS, PNP 150V 0.6A 2N5401,Q302, Q304, Q309, Q313, Q316, Q324, Q401 -5V TO220 LM7905CT REGULATOR U303, 502 2 1 6 5 4 FOTO, 6PIN MOC3012 U304 1 2 3 IRFZ40, Q403, Q

8、404, Q406, Q407 MOSFET, IRF640/9640, T0220AB Q305, Q310, Q320, Q321, Q306, Q307, Q311, Q312 PWM, 8PIN DIL UC3842N U307 5.0V Osc PWM UNDER VOLTAGE LOCKOUT OUTPUT CURRENT SENSE GND 5 Vcc 8 4 2 1 7 6 3 R R 1 2 3 4 8 7 6 5 A -+ B OUTPUT A OUTPUT B -INPUT A -INPUT B +INPUT A +INPUT V- V+ B -+ FOTO, 6PIN

9、4N35 U104 1 2 3 6 5 4 TRANS, NPN 250V 1A T0220 TIP47C Q319 +5V TO220 LM7805CT REGULATOR U302, 501 1. GROUND 2. INPUT 3. OUTPUT 1. INPUT 2. GROUND 3. OUTPUT JFET, Q201, Q202, Q205, Q301, Q101 12 3 1. G 2. D 3. S 1. D 2. S 3. G 3 Integrated Circuit Diagrams Prelude MTS Subwoofer 25 EMI PCB (AC Filter) Input PCB Prelude MTS Subwoofer 26 Linear/Buck PCB Prelude MTS Subwoofer 27 Feature PCB Prelude MTS Subwoofer 28 Power Supply PCB 29 30 31 32 33 34 35 36