Yamaha-DSPAX1-avr-sch 电路图 维修手册.pdf

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1、ABCDEFGH 1 2 3 4 5 6 DSP-AX1/RX-V1 I BLOCK DIAGRAM E-84/J-76 RadioFans.CN 收音机爱 好者资料库 ABCDEFGH 1 2 3 4 5 6 DSP-AX1/RX-V1 I BLOCK DIAGRAM E-87/J-79 RadioFans.CN 收音机爱 好者资料库 ABCDEFGH 1 2 3 4 5 6 DSP-AX1/RX-V1 AM IF COIL CONTROL DECODER S.CURVE LEVEL DET FM DET COIL Q4 S.METERSD ANT COIL VCO STOP OSC COI

2、L AGC PLL MIX OSC MUTE PROGRAMABLE DIVIDER UNIVERSAL COUNTER PHASE DETECTOR CHARGE PUMP DATA SHIFT REGISTER LATCH UNLOCK DETECTOR T5 L.P.F. L R L.P.F. T4 XL2 FM ANT GND TUNER CONTROL AM ANT AM COIL PACK PK2 RF AMP LOCAL OSC BUFFER PK1 VT OSC STRQ AM OSC FM OSC VT XL1 STSG MONOD1 D2 METER VR1 SEPARAT

3、ION VR2 Q5 /FM /ST CE DI CLK DO TMUTE METER /ST MIX A,B,G,L only T3 AM/FM IF DET. IC1 LA1266 MPX IC3 LA3401 FM IFPOST AMP AM IFAM DETT2 AM RF IF /AM AM IF FM IF IF QUADRATURE DET T1 IF AMP Q1,2 q CERAMIC FILTER Fi 1 CERAMIC FILTER Fi 2 Fi 3 REFERENCE DIVIDER FM/AM BAND CHANGE FM/AM MUTING TUNER CONT

4、ROL PLL IC2 LC72131 TUNER ti uq !0 !1 !8 0 1 3 4 !2!5 !6 !8 !9 0 q 2 i !1 o !0 e r t y !3!6i ty !2 !5 w q !7 ST.IND !0!3!5 t i 1 r Q3 u !3 AN78N05 G ICs NJM7905FA NJM79M12FA PQ3RD13 PQ05RD11 NJM78M12FA 1:COMMON 2:INPUT 3:OUTPUT32 1 1: OUTPUT 2: COMMON 3: INPUT 32 1 TC74HCU04AP PC4570HANJM2068L-D NJM

5、4556AL TC74HC4051AP TC74HC4052AP TC74HC4053AP LA7108M 1 7 14 NJM2904M PC4570G2 1 9 123 1:INPUT 2:COMMON 3:OUTPUT 1 8 1SS133 1SS270A 1SR139-400 MA185 AK04 RB441Q-40 MTZJ2.0B MTZJ5.1A MTZJ5.1B MTZJ5.6B MTZJ6.2C MTZJ6.8A MTZJ6.8B G Diodes 1SS355 RB501V-40 2SC1740S (R, S) 2SD1915F (S, T) DTA144ES DTC114

6、ES DTC143XS DTC144ES G Transistors 2SC1846S LA3401 LC72131 1 22 11 LA1266 LC78211 LC78212 LC7536-Y 30 1 15 1 8 16 8 PM4007A YSS908-F YSS918D-F M30624FGFP M66004MBFP-200C TC74HC151FPEL HD74HC151FPEL ADM202JRN-REEL7 CS3310-KSR YSS910-S AK5383-VS W24258S-70LE-EL10 DF1704E YSD917-ME1 HD74HC00FPEL TC74HC

7、U04AFEL TC74HC125AF TC74HC126AF PC4574G2 PCM1704U TC9274N-013 28 15 14 1 42 1 21 42 21 1 22 14 7 1 8 89 88 45 132 133 176 441 51 50 31 81 80 100 301 64 32 1 33 2010 1 11 16 8 1 9 8 4 1 5 MSM514260C-60JS E B C B C E 2SA1708 (S, T) 2SC4488 (S, T) 2SA1837 2SB1375 2SC4793 2SD2396 (J, K) S1NB20 Anode Cat

8、hode Anode Cathode S GD 2SK246 (Y) B C E 2SA970 (GR, BL) 2SA1015 (Y) 2SC535 (A, B, C) 2SC1145 (O, Y) 2SC1815 (Y) 2SC2240 (GR, BL) 2SC2705 (O, Y) 2SC2878 (A, B) C E B 2SA1037K (Q, R, S) 2SC2412K (Q, R, S) 2SC3326 (A, B) 2SD1383K (A, B) 2SD1938F (S, T) DTA144EKA DTC143EKA DTC144EKA 2SA1943 (O, R) 2SC5

9、200 (O, R) E C B D3SBA20 D4SBS4 D10XB20 D15XB20 RBV-1306 + + 1 24 12 KV1851-TL EC B 1: VIN 2: VO 3: GND 4: VC 4 11 4 8 NJM2068MD BU2092 1 18 9 1 20 10 M35013-79SP 2SA1694 (O, P, Y) 2SC4467 (O, P, Y) BC E BC E MTZJ11.0B MTZJ12.0C MTZJ15.0B MTZJ27.0B MTZJ30.0D I PIN CONNECTION DIAGRAMI BLOCK DIAGRAM (

10、TUNER : RX-V1 only) E-88/J-80 RadioFans.CN 收音机爱 好者资料库 ABCDEFGH 1 2 3 4 5 6 IJKLMN 7 8 9 10 DSP-AX1/RX-V1 AC-3 RF DEMODULATOR SUB CPU MATRIX 6.1/DTS ES DECODER DOLBY DIGITAL/DTS/PRO LOGIC DECODER AC3D2av AC3Dav ADC DIR5 RAM RC LS/RS LSt/RSt LSt/RSt L/R C/LFEDIGITAL 4.1 4.8 2.5 3.1 4.8 2.5 4.8 4.8 4.8

11、 4.8 4.0 4.8 0.3 0.3 0.03 4.1 4.8 4.8 4.7 -0.6 -0.6 0 0 0 00 0 0 0 00 0 00 0 0 0 0 0 0 0 0-0.1 -0.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.4 3.5 4.7 4.7 3.5 0 0 0 0 0 0 2.4 2.4 2.4 4.8 0 2.4 4.8 0 2.4 2.4 2.4 2.4 11.6 0 2.4 2.4 0 0 2.4 4.8 2.4 2.4 2.4 2.4 -11.6 0 0 0 0 0 0 2.5 3.5 4.7 4.7 4.8 4.7 4.7 0 4

12、.7 0 4.8 2.5 2.3 2.4 4.8 0 2.4 4.8 0 0 4.8 0 0 2.34.7 2.3 2.4 0 3.5 4.7 4.7 2.5 0.3 2.5 3.1 0.3 2.5 3.1 0.3 0 0 0 0 0 0 0 0 4.3 q w r e 2.6 2.4 4.8 0 0 0 4.9 0 2.4 4.9 1.9 2.42.4 0 0 2.6 2.4 0 4.9 0 4.8 0 0 2.4 2.4 0 3.6 0 0 0 0 0 0 4.8 4.8 4.7 4.8 4.8 4.8 4.8 4.8 2.3 0 0 0 0 0 0 0 2.2 4.8 4.8 4.8 4

13、.8 4.8 4.9 0 0 0 0 0 0 0 4.8 4.8 0 4.7 4.8 4.8 4.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.7 2.0 0 4.7 0 0 0 2.3 4.7 0 0 0 3.3 2.4 0 0 0 0 4.7 0 2.2 0 4.7 0 0 0 4.8 4.8 0 0 0 0 4.8 4.8 4.8 4.8 4.8 4.8 0 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 3.2 2.4 2.4 3.2 3.2 0 0 0 0 0 0 0 0 0 0 4.8 0 0 0 2.4 0 3.2 0 0 0 0

14、 0 0 3.2 0 0 0 0 0 0 0 0 0 4.8 0 0 0 3.2 0 4.8 3.2 3.2 4.8 0 0 0 2.4 0 3.2 0 0 0 0 0 3.2 0 0 4.7 4.7 0 4.4 4.8 4.8 3.2 0 0 0 0 4.8 4.7 4.7 0 4.8 4.8 3.2 0 0 1.4 1.4 0 0 3.2 2.4 2.4 3.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.7 4.7 4.7 0 0 0 0 2.0 0 1.2 0 4.7 0 4.7 4.7 4.7 4.7 4.7 1.2 4.7 4.7 4.7 1.2 1.2 0 0 0

15、 0 0 0 0 1.2 0 4.7 0 4.7 4.7 4.7 4.7 1.2 0 0 0 4.7 4.7 3.8 2.4 4.7 2.4 2.4 4.8 4.7 0.7 -4.8 -0.5 0 0 4.7 0 0 0 4.7 0 4.7 2.3 0 4.7 ISCHEMATIC DIAGRAM (DSP(1)-1) * All voltage are measured with a 10M/V DC electric volt meter. * Components having special characteristics are marked Zand must be replace

16、d with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. Point q (Pin 9 of IC2) V : 2V/div, H : 50 nsec/div DC, 1 : 1 probe 0V Point w (Pin 11 of IC2) V : 2V/div, H : 50 nsec/div DC, 1 : 1 probe 0V Point e (Pin 56 of IC24) V : 2

17、V/div, H : 50 nsec/div DC, 1 : 1 probe 0V Point r (Pin 13 of IC1) V : 2V/div, H : 50 nsec/div DC, 1 : 1 probe 0V IC38 : PC4570G2 IC45 : NJM2904M-T1 Dual OP Amp + OUT1 IN1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 IC39, 40 : TC74HCUO4AFEL Hex Inverters 1A 1Y 2Y VDD 6A 1 2 3 411 2A6Y 5A 12 13 14 3A

18、3Y 5Y 4A 5 6 7VSS4Y8 9 10 IC4, 36, 37 : HD74HC00FPEL Quad 2 Input NAND A1 B1 A2 VDD B4 1 2 3 411 Y1A4 Y4 12 13 14 B2 Y2 B3 A3 5 6 7VSSY38 9 10 IC43, 44 : HD74HC151FPEL 8 to 1 Data Selectors IC42 : TC74HC125AF Quad 3 State Bus Buffers 1A 1Y 1CVcc 4C 1 2 3 4112C 4A 4Y 12 13 14 2A 2Y 3C 3A 5 6 7GND3Y8

19、9 10 IC41 : TC74HC126AF Quad 3 State Bus Buffers 1A 1Y 1CVcc 4C 1 2 3 4112C 4A 4Y 12 13 14 2A 2Y 3C 3A 5 6 7GND3Y8 9 10 D4 D3C D2 D1 D0YWS D5 D6 D7AB 161514131211109 12345678 VCC 4 5 6 7 A B C 3 2 1 0 Y W STROBE GND DATA INPUTS OUTPUTS DATA INPUTS DATA SELECT INPUTSOUTPUTS SELECTSTROBE C X L L L L H

20、 H H H B X L L H H L L H H A X L H L H L H L H S H L L L L L L L L Y L D0 D1 D2 D3 D4 D5 D6 D7 W H D0 D1 D2 D3 D4 D5 D6 D7 IC25 : W24258S-70LE-EL10 32K X 8 bits Static RAM IC46 : PC4574G2 4 Channel OP-Amp 1 2 3 411 12 13 14 5 6 78 9 10 OUT A IN A +IN A V+ +INB INB OUT B OUT D IN D +IN D V +INC INC O

21、UT C A + D + + C + B 1A14 2A12 3A7 4A6 5A5 6A4 7A3 8A2 9A1 10A0 11I/O1 12I/O2 13I/O3 14VSS 28VDD 27WE 26A13 25A8 24A9 23A11 22OE 21A10 20CS 19I/O8 18I/O7 17I/O6 16I/O5 15I/O4 ROW DECODER 2 1 8 7 6 5 4 3 26 27 20 22 23219102524 CORE CELL ARRAY 512 ROWS 64 x 8 COLUMNS PRECHARGE CKTCLK GEN DATA CNTRL C

22、LK GEN I/O CKT COLUMN DECODER A12 A14 A2 A3 A4 A5 A6 A7 A13 I/O1 I/O8 WE CS OE A11 A10 A1 A0 A8 A9 11 19 IC3 : AK5383-VS 24 bit 2ch A/D Converter VOLTAGE REFERENCE DELTA-SIGMA MODULATOR DELTA-SIGMA MODULATOR VOLTAGE REFERENCE DECIMATION FILTER DECIMATION FILTER HPF HPF CONTROLLER CALLBRATION SRAM SE

23、RIAL OUTPUT INTERFACE 1 2 3 4 5 6 25 24 28 26 27 921222310 1413161112 78 15 19 17 18 VREFL SDATA HPFE MCLK DFS GNDL VCOML AINL+ AINL ZCAL AINR+ AINR VCOMR VREFR GNDR VA AGND BGND CAL SMODE1 SMODE2 SCLK LRCK FSYNC RST VD DGND E-90/J-82 ABCDEFGH 1 2 3 4 5 6 IJKLMNO 7 8 9 10 DSP-AX1/RX-V1 L/R L/R LS/RS

24、 RC C/LFE C/RC CENTER L/R C/LFE FL/FR FL/FR FRONT L RC RC RL/RR L FL/FR FL/FR RL/RR RL/RR L/R L/R C/RC C/LFE REAR CENTER RL/RR REAR L 0 0 0 0.2 4.8 4.8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4.8 3.2 2.0 2.5 4.6 1.6 4.8 4.8 4.8 4.8 4.8 4.4 4.84.8 4.8 4.8 4.8 4.8 2.4 2.4 2

25、.5 0 0 0 4.8 4.8 2.3 2.4 0 0 0 0 0 4.84.8 4.8 4.8 4.8 4.8 2.4 2.4 2.5 0 0 0 4.8 4.8 2.3 2.4 0 0 0 0 0 4.84.8 4.8 4.8 4.8 4.8 2.4 2.4 2.5 0 0 0 4.8 4.8 2.3 2.4 4.4 0 0 0 0 0 4.84.8 4.8 4.8 4.8 4.8 2.4 2.4 2.5 0 0 0 4.8 4.8 2.3 2.4 4.4 0 0 0 0 0 4.84.8 4.8 4.8 4.8 4.8 2.4 2.42.4 4.9 -4.8 2.6 -4.8 -4.8

26、 -2.3 0 0 2.6 4.9 0 0 0 0 0 0 11.511.5 0 -2.2 0 2.6 0 0 0 4.8 4.8 2.3 2.4 3.0 0 0 0 0 0 0 0 0 0 4.8 3.2 0 2.4 4.8 4.7 4.7 4.8 2.5 2.5 0 0 2.3 4.7 4.8 4.8 4.8 4.8 4.8 4.8 4.8 3.2 0 0 0 0 0 0 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.1 0.1 4.8 3.2 0 0 0 0 0 3.2 4.8 0 0 0 0 0 0 0 0 0 4.8 4.

27、8 3.2 4.8 0.1 0.1 0.1 0.2 0.2 0.2 0.2 0.2 0.2 4.8 4.8 4.6 2.0 0.2 0.2 0.2 0.2 2.5 2.5 1.6 4.8 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 4.8 4.8 0 0 1.6 1.6 1.6 1.6 1.6 1.6 3.9 3.9 4.1 04.8 2.4 2.4 2.4 2.4 3.6 4.3 1.6 1.6 1.6 1.6 1.5 4.8 3.2 4.8 1.5 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 3.5 1.6 4.8 0 2.4 2.4

28、 2.4 2.4 0 3.2 3.6 3.9 4.3 4.1 4.8 3.2 4.8 4.7 4.7 4.8 4.8 4.8 4.8 4.8 0 0 3.2 4.8 0 2.5 2.3 0 0 0 0 1.6 1.6 0 1.7 0 4.8 3.2 0 0 3.2 4.8 0 3.0 4.4 4.4 1.8 4.4 4.8 0 0 0 0 0 0 4.8 4.8 3.2 0 0 1.6 4.8 1.7 1.6 3.5 4.6 2.0 0.2 0.2 0.2 0 0 0 0.2 0.2 0.2 0.2 0.2 2.5 2.5 1.6 0.2 0.2 0.2 t 2.4 4.9 -4.8 2.5

29、-4.8 -2.3 0 0 2.7 4.9 0 0 0 0 0 0 11.511.5 0 -2.1 0 2.4 4.9 -4.8 2.5 -4.8 -2.3 0 0 2.6 4.9 0 0 0 0 0 0 11.511.5 0 -2.1 0 2.4 4.9 -4.8 2.5 -4.8 -2.3 0 0 2.6 4.9 0 0 0 0 0 0 11.511.5 0 -2.2 0 2.4 4.9 -4.8 2.5 -4.8 -2.3 0 0 2.6 4.9 0 0 0 0 0 0 11.511.5 0 -2.2 0 2.4 4.9 -4.8 2.6 -2.3 0 0 2.7 4.9 0 0 0 0

30、 0 0 -11.5 -11.5 0 -2.2 0 -4.8 2.4 4.9 -4.8 2.5 -2.3 0 0 2.6 4.9 0 0 0 0 0 0 -11.5 -11.5 0 -2.2 0 -4.8 2.4 4.9 -4.8 2.5 -2.3 0 0 2.6 4.9 0 0 0 0 0 0 -11.5 -11.5 0 -2.2 0 -4.8 2.4 4.9 -4.8 2.5 -2.3 0 0 2.6 4.9 0 0 0 0 0 0 -11.5 -11.5 0 -2.2 0 -4.8 2.4 4.9 -4.8 2.5 -2.3 0 0 2.6 4.9 0 0 0 0 0 0 -11.5 -

31、11.5 0 -2.2 0 DSP6 DSP6 DIGITAL FILTER DAC RAMRAMRAM ISCHEMATIC DIAGRAM (DSP(1)-2) * All voltage are measured with a 10M/V DC electric volt meter. * Components having special characteristics are marked Zand must be replaced with parts having specifications equal to those originally installed. * Sche

32、matic diagram is subject to change without notice. Point t (Pin 3 of IC7) V : 1V/div, H : 50 nsec/div DC, 1 : 1 probe 0V IC10, 11, 13, 14, 16, 17, 19, 20, 22, 23 : PCM1704F 24 bit D/A Converter IC4756 : PC4570G2 Dual OP-Amp + OUT1 IN1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 IC33 35 : MSM514260C-

33、60JS 262,144-word x 16 bit Dynamic RAM 1VCC 2DQ1 3DQ2 4DQ3 5DQ4 6VCC 7DQ5 8DQ6 9DQ7 10DQ8 11NC 12NC 13WE 14RAS 15NC 16A0 17A1 18A2 19A3 20VCC 40VSS 39DQ16 38DQ15 37DQ14 36DQ13 35VSS 34DQ12 33DQ11 32DQ10 31DQ9 30NC 29LCAS 28UCAS 27OE 26A8 25A7 24A6 23A5 22A4 21VSS TIMING GENERATOR I/O CONTROLLER I/O

34、CONTROLLER COLUMN DECODERS SENSE AMPLIFIERS I/O SELECTOR OUTPUT BUFFERS OUTPUT BUFFERS INPUT BUFFERS INPUT BUFFERS MEMORY CELLS COLUMN ADDRESS BUFFERS INTERNAL ADDRESS COUNTER REFRESH CONTROL CLOCK ROW DECODERS WORD DRIVERS ON CHIP VBB GENERATOR ROW ADDRESS BUFFERS RAS LCAS UCAS A0A8 VCC VSS WEOE DQ

35、1DQ8 DQ9DQ16 99 1616 8 8 8 8 8 8 8 8 99 REF DC SERVO DC VDD DGND +VDD VCC AGND +VCC BPO DC 191745620161112 14 SERIAL INPUT I/F & CONTROL LOGIC 23BIT DAC A 23BIT DAC B BIPOLAR OFFSET REFERENCE & SERVO POWER SUPPLY 10 9 1 7 2 3 8 13 18 IOUT NC NC NC NC BCLK WCLK DATA 20BIT INVERT IC9, 12, 15, 18, 21 :

36、 DF1704E 24 bit Digital Filter SERIAL INPUT I/F 8X OVERSAMPLING DIGITAL FILTER WITH FUNCTION CONTROLLER OUTPUT I/F MODE CONTROL I/F CRYSTAL OSCPOWER SUPPLY 2 28 1 11 12 13 10 15 14 16 1718276 435 26 25 24 23 1920 79228 BCKIN LRCIN DIN BCKO WCKO DOL DOR SF0 SF1 SRO IIS IW0 IW1 OW0 OW1 XTI XTO CLKO VD

37、D VSS MD/CKO MC/LRIP ML/RESV MODE MUTE RST DEM SCK IC57 : HD74HC00FPEL Quad 2 Input NAND A1 B1 A2 VDD B4 1 2 3 411 Y1A4 Y4 12 13 14 B2 Y2 B3 A3 5 6 7VSSY38 9 10 E-91/J-83 P-E92/J84 E-1 P-E93/J85 D-4 P-E92/J84 D-1 P-E92/J84 D-1 ABCDEFGH 1 2 3 4 5 6 IJKLMN 7 8 9 10 DSP-AX1/RX-V1 L CENTER REAR CENTER F

38、RONT L REAR L 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 11.4 11.4 4.9 4.9 4.9 0 0 -11.4 -11.4 4.4 4.8 3.6 4.33.7 -11.5 0 0 0 0 0 0 11.4 11.4 11.4 0 0 0 11.4 0 0 0 11.4 11.4 -11.5 0 0 0 -11.5 0 0 0 -11.5 0 0 0 0 0 0 00 0 0

39、0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.9-11.5 11.4 11.4 4.9 0 0 -11.5 -11.5 -11.5 0 0 -11.5 -11.5 11.4-11.5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -11.5 11.4 11.4 -11.5 -11.5 11.4 -11.4 0 0 4.8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -11.6 -11.6 4.8 -0

40、.1 -5.7 -5.7 -5.1 -5.1 5.45.4 4.8 4.84.8 4.8 0.30.3 0.3 0.3 0.3 0 4.9 4.9 0.3 4.8 4.9 4.8 -11.2 -11.2 4.4 4.9 4.8 -11.2 -11.2 4.4 4.9 4.8 -11.2 -11.2 4.4 4.9 3.6 4.3 4.3 4.3 4.9 4.8 -11.2 -11.2 4.3 4.8 0 0 0 5.4 -5.7 -11.5 -11.6 5.4 11.3 -11.5 -11.6 11.5 11.5 0 0 0 0 0 -11.6 11.5 11.5 11.5 11.5 11.5

41、 11.5 11.5 4.8 4.4 0 0 0 0 0 11.5 -11.6 0 0 0 0 0 5.1 5.1 -5.2 5.1 4.8 0 0 4.8 0 0 0 0 0 0 0 5.1 5.1 -5.2 5.1 4.8 0 0 4.8 0 0 0 0 0 0 0 5.1 5.1 -5.2 5.1 4.8 0 0 4.8 0 0 0 0 0 0 0 0 0 0 0 0 0 5.1 5.1 -5.2 5.1 4.8 0 0 4.8 4.9 4.9 4.9 4.9 4.9 4.9 4.9 1.3 0.3 0.5 4.8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

42、0 0 0 0 4.8 4.8 4.8 4.9 4.9 4.9 4.9 4.9 4.9 4.5 2.3 1.8 4.9 0 0 0 0 -0.1 0 4.9 4.9 0 0 0 4.9 4.8 4.8 4.8 4.9 4.9 -0.1 0 0 0 0 4.9 0 0 0 4.9 -0.1 4.9 0 0 4.9 0 0.5 0 0 0 0 0 0 0 4.9 4.9 4.9 4.9 4.9 4.9 4.9 4.9 0 0 0 4.9 4.9 4.9 5.6 5.60.6 0.6 0 0 00 0 0 0 0.7 4.8 7.1 6.4 6.4 11.3 11.3 10.6 11.3 4.9 -

43、8.9 4.9 0 9.2 4.8 9.7 -9.5 -4.7 2.4 7.3 0 4.8 0 0 0 0 0 0 0 0 0 5.1 5.1 -5.2 5.1 4.8 0 0 11.4 11.4 -11.5 0 0 0 0 0 0 0 0 0 0 11.1 -11.2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 y u-A u-B MAIN CPU LEVEL CONTR

44、OL ZONE 2 VOLUME PHONE EQ AMP CIRCUIT CHANGES BY MARKET.X : NOT USED ISCHEMATIC DIAGRAM (FUNCTION) * All voltage are measured with a 10M/V DC electric volt meter. * Components having special characteristics are marked Zand must be replaced with parts having specifications equal to those originally i

45、nstalled. * Schematic diagram is subject to change without notice. Point y (Pin 13 of IC27) V : 2V/div, H : 50 nsec/div DC, 1 : 1 probe 0V Point u -A (+MB : Pin2 of CB8) Point u -B (/RES : Collector of Q8) V : 2V/div (+ MB), V : 2V/div (/RES) DC, 1 : 1 probe, H : 1 sec/div 0V 0V + MB /RES AC CORD ON

46、AC CORD OFF L2 L4 L3 LCOM1 L1 1 2 3 4 5 L6 LCOM2 L5 6 7 8 L8 LCOM3 L7 9 10 11 VDD19 VSS16 VEE12 RES 18 S 17 LEVEL SHIFTER LATCH SHIFT REGISTER R2 R4 R3 RCOM1 R1 R6 RCOM2 R5 R8 RCOM3 R7 20 22 30 29 28 27 26 25 24 23 21 CONTROL 15 CL 14 D1 13 CE IC11 : LC78211 Analog Function Switch IC2, 3 : TC9274N-0

47、13 Analog Function Switch IC1 : NJM2068MD-T1 IC48, 10, 1215, 2226 : PC4570G2 Dual OP-Amp + OUT1 IN1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 IC21 : LC78212 Analog Function Switch L6 3 LCOM2 8 L8 LCOM3 L7 9 10 11 VDD19 VSS16 VEE12 RES 18 S 17 L2 L3 L1 1 2 3 L5 6 7 LEVEL SHIFTER LATCH SHIFT REGISTE

48、R R2 RCOM1 R3 RCOM1 R1 R6 RCOM2 R5 R8 RCOM3 R7 20 22 30 29 28 27 26 25 24 23 21 CONTROL 15 CL 14 D1 13 CE L4 5 LCOM1 4 VSS GND CK VDD STB DATA S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 2 1 3 4 5 7 6 8 9 10 11 12 13 14 15 16

49、17 18 19 20 21 41 42 40 39 38 36 37 35 34 33 32 31 30 29 28 27 26 25 24 23 22 IC9 : LC7536-Y Electric Controlled Volume L5dB IN CONTROL S 1 12 CE19 CLK17 DI18 LATCH LEVEL SHIFT SHIFT REGISTER L CT13 L CT24 LVM9 5 L5dB OUT 6 L1dB IN 8 L1dB OUT R5dB IN30 28 27 22 23 R1dB OUT 25 R1dB IN 26 R5dB OUT R CT1 R CT2 R VM 13VDD 21VCC 14VSS 10VEE 27 11 15 16 20 24 29 NC IC1620 : CS3310-KS Stereo Digital Volume Control MUX MUX CONTROL REGI