Carvin_sx300r_5 电路图 维修原理图.pdf

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1、12340 World Trade Drive San Diego, CA 92128 (858) 487-1600 FAX 487-6629 REVISED BY: APPROVED: DRAWN BY:DATE: DATE: ASSY. DATE: ARVIN REV: REV: NO: PCB NO: C 3. ALL CAPACITORS IN MICROFARADS, EXCEPT AS NOTED. 1. ALL GROUNDS ARE A EXCEPT AS NOTED. NOTES UNLESS OTHERWISE SPECIFIED 4. ALL RESISTORS IN O

2、HMS. 6. LABEL B INDICATES A JUMPER WIRE. SYSTEM MASTER LINE OUT/HEADPHONE AMP A.J. Ashley 5. ALL OP AMPS ARE TYPE 4565, EXCEPT AS NOTED. 2. ALL DIODES ARE TYPE 1N914, EXCEPT AS NOTED OUTPUT REAR B INPUT J2 J4 J6 S603.A 0.001F 400V Diode smt 600V 1A Diode smt 600V 1A Diode smt 600V 1A 22F 35V SMT 22F

3、 35V SMT fsw=107kHz +15VDC R -15VDC R R660 R685 R683 R684 C669 D626 D631 D627 C661 C662 D628 C671 D632 D633 D634 D609 C606 C630 C160 C658 C668 OP3 TR1 C667 Z602 Z601L601 L602 U604 + + + + + + T + 100 smt 1/4w R616 GND LIFT EARTH GND LIFT S603.B 0.01F Film SMT C647+ E1 EARTH MOUNT GND LIFT GND LIFT V

4、IPer 20 Source Drain Comp OSC VDD Q603 43 2 1 56 7 8 F1 PL1 N E L H111.A H111.D L603 12 34 H111.B H111.C C638 EARTH C639 EARTH 0.47F 250VAC X2 C682 J7 H8A.H H8A.F H8A.A H8A.C H8A.B H8A.D H8A.E H8A.G Diode smt 600V 1A D625 GND LIFT +8V L605 22F 35V SMT C632 + C159 + GND LIFTGND LIFT +5V 7805 +5V Q627

5、 GND LIFT C640C641 +5V +15VDC R -15VDC R GND LIFT GND LIFT GND LIFT PHONES C601 L608 L610C681 GND LIFT GND LIFT J3 1 2 3 J5 1 2 3 N/U BAL VOICED H7A.G H7A.H A900.B 6 5 +7 R904 R905 C903 39pF A900.A 2 3 + 1 8 4 10K R903 C902 560PF 47K 10K +15VDC R -15VDC R R902 C901 0 47k R906 47 S1.A R901 15K A801.B

6、 6 5 +7 R816 R817 C813 39pF A801.A 2 3 + 1 8 4 10K R814 C812 0.001F 22k 10K +15VDC R -15VDC R R813 C810 1F 68k R818 47 R819 47 S2.A R812 6.8k C800 + A800.A 2 3 +1 A800.B 6 5 +7 R800 R804 R805R806R807 R808 R810 R809 R811 R801 R802 R803 C804 + C801 + C802 + C805 + C807 + C806 + C808 + C809 + C803 + C8

7、11 0.001F 0.1F 0.1F 33k 33k 360k 0.01F 47k 0.0047F Q800 Q801 R815 R820 R821 100 100 0.1F 47K 6.8k 0.0047F 47k47k 0.0022F 220pF 100k 0.0047F 10k 10k 0.1F 10k DSP BIT1 DSP BIT2 DSP BYP Q2 Q1 R14 .01 UF 400V H101B.A H101B.B 33F 400V 0.027F 400V 0.027F 400V 0.027F 400V 30- 03300 80- 03300 B 20DEC02 PAGE 5 of 5 1k 1k JUMPER A SX300R R607 n/u n/u 收音机爱好者资料库 Ra d i o Fa n s .CN