Carvin_sx300r_4 电路图 维修原理图.pdf

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1、TSTIO1 TSTIO2 TSTIO3 SDOUT2 SDOUT3 SDOUT1 DZFSET AOUTR2 AOUTL2 AOUTR1 AOUTL1 TSTI1 SDIN2 SDDA2 SDIN1 SMODE TSTI2 CASRF RASCE VRDAL VRDAH AINR- AINR+ AINL- AINL+ VRADL VRADH OPCL PDAD PDDA SDAD SDDA BCLK LRCK CLK0 DVDD DVSS DVSS DVDD SCLK WRDY DRDY DVSS DVDD DVSS DVDD DVSS DVDD DZF2 DZF1 AVSS AVDD VC

2、OM AVSS AVDD RST DVB DVB XTI XTO WRQ A16 A15 A14 A13 A12 A11 A10 IO0 IO1 IO2 IO3 IO4 IO5 IO6 IO7 DVB DVB AVB AVB 100 PD 10111213141516171819202122232425 262728 CS 2930313233 S1 343536 SO 373839 WE 4041424344454647 A9 484950 A8 51 A7 52 A6 53 A5 54 A4 55 A3 56 A2 57 A1 58 A0 59 OE 6061626364656667686

3、9707172737475 7677 NC 78798081 NC 82838485868788 NC 8990919293949596979899 NC 1 A K 7 7 1 2 23456789 U501 IDT71024 I/O7 I/O6 I/O1 I/O5 I/O4 I/O3 I/O2 I/O0 A16 A10 N/C A13 A11 A14 A12 CS1 CS2 GND A15 Vcc A9 23 21 24 OE 25 A7 A6 A5 A4 A3 10 A2 19 18 17 15 13 12 A0 11 A1 27 A8 22 20 26 14 28 29 WE 30 1

4、6 31 32 2 3 4 5 6 7 8 9 1 U502 T16 T16 T15 T15 T14 T13 T13 T12 T12 T11 T11 T10 T10 T9 T9 T8 T8 T14 +5V C508 + C507 + R502 27pF 27pF Y501 T2 T0 T1 T3 T4 T5 T6 T7 +5V C504 + 0.1u C517 +0.1u C518 + 22u +5V +5V C515 + 0.1u +5V +5V C522 + 0.1u C523 + 22u +5V R518 R501 +5V +5V +5V +5V +5V +5V +5V C502 + 0

5、.1u C519 + 0.1u C516+ 0.1u C505 +0.1u C501 +0.1u C506 + 0.1u C503 + 0.1u R519 VCOM P2.0 P1.3 P1.2 P0.5 P0.2 P0.1 P0.4 P0.3 P1.7 P1.4 P1.6 P0.0 P0.6 P1.0 P1.1 P1.5 P2.1 P0.7 VDD VSS 19 16 15 12 17 14 11 U503 10 20 18 13 9 6 5 2 8 7 4 3 1 8 7 L P C 7 6 4 +5V +5V C514 0.001u A501.B 6 5 + 7 R520 R514 C5

6、20 39pF R515 R516 A501.A 2 3 + 1 8 4 +5V 10K R517 C521 39pF GND LIFT C525 + C509 0.1F R503 10K R523 15K R524 15K R504 +5V C511 0.22u C526 + 0.1 22k C510+ 0.1u R507 C513 + OP501.A 1F OP501.B R521 4.7k R508 470 12340 World Trade Drive San Diego, CA 92128 (858) 487-1600 FAX 487-6629 REVISED BY: APPROVE

7、D: DRAWN BY:DATE: DATE: ASSY. DATE: ARVIN REV: REV: NO: PCB NO: C A.J.Ashley DSP 10K 330 330 4.7K 4.7K 1M 0.1 10K 10K 100K AT25160 HOLD SCK GND Vcc WP SO CS SI U505 6 4 3 2 1 7 8 5 +5V +5V R5051k SER/PARL RESET SCLK LCLK GND Vcc QH 10 11 12 13 SA 14 1516 U504 B 1 C 2 D 3 E 4 F 5 G 6 H 7 8 9 A 7 4 H

8、C 5 9 7 +5V N:635 N:636 N:637 N:638 GND LIFT DSP SELECT N:635 N:636 N:637N:638 R509 22k Channel Logic CH1 ON CH2 ON CH3 ON BIT1(PX_COUT0)010 BIT2(PX_COUT1)001 CH1 FET+-1500 CH1 FET-0-15-15 CH2 FET+0-150 CH2 FET-150-15 CH3 FET-15-150 switch pressedCHB1CHB3CHB2 Pin 20, Pin 19, R510 +5V 10K R511 10K R5

9、12 10K R513 10K B GND LIFT R522 22K C524 + 0.0022 R506 22K C512 + 0.0022 A502.B 6 5 + 7 R526 22k R525 6.8k C527 39pF DSP REAR H5B.A H5B.B H5B.C H5B.D DSP SELECT DSP ADJUST J8 1 2 3 45 FOOTSWITCH DSP RET DSP SEND H7A.B H7A.A H7A.D H7A.C H7A.F H7A.E DSP BIT1 DSP BIT2DSP BYP H501.A H501.B H501.C H501.D H501.H H501.G H501.F H501.E +5V A502.A 2 3 + 1 8 4 +15VDC R -15VDC R R598 R599 15K 15K 20DEC02 PAGE 4 of 5 30- 03301 80- 03301 A SX 300R 收音机爱好者资料库 Ra d i o Fa n s .CN