Yamaha-RX-797-Schematic电路原理图.pdf

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1、RX-797 30 I BLOCK DIAGRAM Head Phone C834,835 C121,122 Front A Front B RY101 RY102 RY103 Power Amp C119,120 C143C144 +B B G D116-119 +15V 15V 22V Q130 Q131 +15 15 G C160C161 FL1 FL2 C33 +5BUS +5V IC22 +5X +3.3X G XMPWR SW101 SW101 D120 R171 R172 G Q102 VP C803 + D110 D121 D122 ACL ACL ACH ACH ACL2 R

2、227 ACL2 ACL +5V IC27 D21 +3.3V IC21 Q254 D259 Power Detector /Reset Q252 POWER RELAY +5.5V IC601 Q605 G +5S +5M +5BU D605 D604 D603 POWER SAVE RY251 s10 C261 D261 IC251,252,253POWER RELEY 70 SPEAKER RELEY 24,25,63,65 MUTE CONTROL 81 27 POWER SAVE XMPWR 55-60 VIDEO SELECTOR 72,76,77 Micro Processor

3、M30622 IC602 XL601 16MHz TUNER/RDS/XM ZONE2 VOLUME SERIAL CONTROL ANALOG 1315 ZONE2 MD/TAPE VCR VCR-REC Muting Q501-504 Volume IC YAC526 IC503 RecOut Selector LA7956 IC452 Input Selector LA7956 IC451 RY251F252 F251/J252 TE251 /MIMT IC351 6dB /POMTMIMT /Z2MT SubWoofer OUT Pure Direct Off MAIN IN PRE

4、OUT Muting Q401,402 Muting Q354-355 /CDMT Muting Q301,302 Muting Q351,356 LPF/MIX IC510,504 NJU7313AM Motor Volume VR431/IC431 Tone Con/Balance VR751-754 IC401 19,22,25 8,9,12 +10.6dB/ +16dB 19,20 13,24 15,21 25,26 REC A 23,24 REC B 3,28 2,29 8,23 4,27 11,20 5,26 7,24 10,21 1,2 3,4 5,6 9,10 11,12 13

5、,14 15,16 7,8 INA INB INC INE INF ING INH VCR DVD DTV VCR DVD DTV DVD DTV IND Pure Direct SW SW402 CD Direct SW SW401 Switch IC501 AnalogComposite FM/AM IC301 IC302 IC505 IC506 IC507 IC508 PHONO EQ ATT 11dB PHONO DVD CD VCR MD/TAPE FM/AM XMDT I2S IC1 AK4384ET 2ch DAC IC25 IC26 IC509 XM 11,10 3 TUNER

6、 7.2MHz DTV DTV/CBL VCR-PB DVD PRI 80 PRV 90 PRD 91 THML 92 THMR 93 POWER DETECT 20 /RESET 12 IR REMOTE U801 VOLUME VR431, IC431 INPUT SELECTOR SW827 FL DISPLAY V801 FL DRIVER IC801 83,100,1,2 94,95 84,85 78,79 74,18,19 75 KEY SW801-818 POWER SW/STANDY SW/ZONE2 SW SW830/SW825/SW826 RecOut/Zone2 Sele

7、ctor BD3841FS IC502 6 1 MONITOR OUT 1 Zone2 Selector LA7956 IC453 Zone2 Composite REC OUT 1 8 4 6 8 6 8 4 CD Direct On CD Direct Off U, C models XM See page 34 SCHEMATIC DIAGRAM OPERATION See page 32 SCHEMATIC DIAGRAM MAIN See page 33 SCHEMATIC DIAGRAM OPERATION See page 32 SCHEMATIC DIAGRAM OPERATI

8、ON See page 32 SCHEMATIC DIAGRAM FUNCTION See page 31 SCHEMATIC DIAGRAM U, C models XM See page 34 SCHEMATIC DIAGRAM ABCDEFGH 1 2 3 4 5 6 IJK 7 8 RX-797 31 I SCHEMATIC DIAGRAM (FUNCTION) *All voltages are measured with a 10M/V DC electronic volt meter. * Components having special characteristics are

9、 marked Zand must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. 0.1 0.1 0.10.2 4.8 0.2 0.3 0.3 0.3 15.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -14.4 -14.7 -14.7 -14.7-14.7 0 14.7 0 6.1 6.2 4.8 3.9 3.9 3.9 3.9 3.9 3

10、.9 3.9 3.8 3.9 3.9 11.8 11.8 11.9 14.3 12.2 11.8 11.8 0.1 0.1 0.1 6.2 3.9 3.9 0.1 0.1 0 0 0 0 0 0 0 0 0 0 13.2 -13.2 0 0 0 0 0 0 13.2 -13.2 0 0 0 0 0 0 13.2 -13.2 0 0 0 0 0 0 0.7 0.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0-14.9 0 15.1 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 00 0 0 0 0 0 14.3 14.3 -14.

11、1 -14.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7.2 -7.1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14.9 -14.5 0 0 0 0 4.8 6.2 6.2 7.26.2 6.8 6.8 0.5 0.5 -6.1 7.9 0.1 7.9 -7.1 -14.9-14.9 15.115.1 -6.1 0 0 0 0 0 00 00 6.2 6.2 -6.1 -6.1 0.7 0.7 0 0 0 0 13.4 -13.2 0 0 0 0 0 4.8 4.8 4.8 4.8 4.8 4.8 4.8 5.1 0.1

12、 4.8 4.8 4.8 4.8 4.8 4.8 2.4 2.4 0 0 0 0 0 0 0 0 0 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.84.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.1 4.1 4.1 4.1 4.8 -14.7 -14.7 0.1 0 00 4.9 3.0 3.6 1.7 1.73.6 0.9 0.9 0 4.8 0.1 0.1 4.8 0.1 0.1 0.1 0.1 0.5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0 4.8 4.

13、5 4.1 4.1 0.3 0.3 0.3 0.3 0.3 0.3 4.7 0 0 0 0 0 00 5.6 5.6 5.6 5.6 4.9 4.9 4.9 4.8 4.8 4.8 5.2 5.5 5.5 11.9 11.9 11.2 15.1 12.4 4.8 0.1 0.1 4.2 9.8 1 CD DIRECT AMP ONCD DIRECT AMP OFF CD DIRECT AMP OFF CD DIRECT AMP OFF CD DIRECT AMP ON TO XM CB23 Page 34 I-5 TO OPERATION (2) W401 Page 32 A-4 TO OPE

14、RATION (2) CB407 Page 32 A-2 TO OPERATION (2) CB401 Page 32 A-3 TO XM CB24 Page 34 I-3 TO MAIN (4) CB284 Page 33 B-1 TO OPERATION (1) CB801 Page 32 A-7 TO OPERATION (13) CB301 Page 32 K-6 IC351, 504510: NJM2068MD-TE Dual OP-Amp + OUT1 IN1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 IC501: NJU7313AM

15、Analog Function Switch 13NC18 NC 2 3 4 5 6 7 8 9 10 11 12 14 30 1 29 28 27 26 25 24 23 22 21 20 19 17 15 CONTROL LEVEL SHIFTER LATCH LEVEL SHIFTER LATCH L1 L2 L3 L4 L-COM1 L5 L6 L-COM2 L7 L8 L-COM3 ST VDD VEE R1 R2 R3 R4 R-COM1 R5 R6 R-COM2 R7 R8 R-COM3 DATA CK VSS 16 IC451453: LA7956 Video Switch D

16、RIVER VIDEO OUT 1 A 2 B 3 VIN1 4 GND 5 VIN2 6 VCC 7 VIN3 8 VIN4 9 CONTROL 4-INPUT 1-OUTPUT VIDEO SWITCH 6 dB AMP IC502 : BD3841FS Function Switch F-SW1 F-SW1: INPUT FUNCTION 1 F-SW2: INPUT FUNCTION 2 32313029282726252423222120191817 12345678910111213141516 DGND F-SW2 CL DA VEE GND VCC RECA1 RECA2 RE

17、CB1 RECB2 RECC1 RECC2 OUT1 OUT2 INI1 INI2 INA1 INA2 INB1 INB2 INC1 INC2 IND1 IND2 INE1 INE2 INF1 INF2 ING1 ING2 INH1 INH2 LOGIC + + + + IC603 : LC72722PM RDS Decoder + + REFERENCE VOLTAGE 57kHz bpf (SCF) CCB TEST PLL (57kHz) ANTIALIASING FILTER SMOOTHING FILTER RAM (24 BLOCK DATA) ERROR CORRECTION (

18、SOFT DECISION) SYNC/EC CONTROLLER SYNC DETECT-1 DATA DECODER CLOCK RECOVERY (1187.5Hz) MEMORY CONTROL OSC/DIVIDER VREF CLK(4.332MHz) SYNC DETECT-2 VDDA VSSD VDDD RDS-ID SYNC SYR VSSA MPX IN DO CL DI CE T1 T2 T3 T4 T5 T6 T7 X IN VREF FL OUT C IN X OUT 314 15 19 18 24 156 4 2 20 21 22 23 7 8 9 10 11 1

19、6 171312 IC503 : YAC526-EZE2 2 Channel High Grade Digital Volume IN1 OUT1 TE1 TE2 TE3 ZCEN1 ZCEN2 OUT2 24 22 23 5 6 7 14 15 13 16 3 8 4 9 2 1 12 11 10 21 REF1B REF1A REF2A REF2B IN2 AVDD DGND REF AVSS DVSS SDATAO (Open Drain) SDATAI SCLK CSN Vol B: 10k 0 -95dB 0 -95dB 0 +31.5dB 16 0 +31.5dB OP Amp Z

20、ero Crossing Detector Zero Crossing Detector S/P Register Control Register OP Amp Vol B: 10k Vol A: 15k 100 100 Vol A: 15k Point q (Pin 13 of IC602) ABCDEFGH 1 2 3 4 5 6 IJKL 7 8 RX-797 32 I SCHEMATIC DIAGRAM (OPERATION) *All voltages are measured with a 10M/V DC electronic volt meter. * Components

21、having special characteristics are marked Zand must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. 0 0 0 0 0 0 0 0 0 0 -12.8 -15.3 -14.6 -16.2 -16.2 -16.2 -16.2 -16.2 -16.2 -16.2 -16.2 -16.2 -16.2 -16.2 -16.0

22、 -16.1 -17.8 -17.8 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -15.3 -15.7 14.7 00 0 14.7 0 0 0 0 0 0 -14.5 0 0 0 0 0 0 0 0.8 0.8 -14.5 -18.5 -18.5 -21.3 -17.8 -19.4 -16.3 -21.1 -21.1 -21.1 -21.1 -21.1 -21.1 -21.1 -21.1 -21.1 -21.1 -21.1 -19.5 -21.1 -16.

23、2 -16.2 -16.2 -16.2 -19.5 -17.8 -16.2 -16.2 -14.6 2.1 4.8 4.8 4.8 4.8 0 2.2 -17.8 -19.4 -17.8 -16.0 -16.1 -16.2 -17.8 -21.2 -19.4 0000 -19.5 4.8 -16.2 -19.5 0 4.8 4.8 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -19.5 -21.3 -16.3 -21.1 -21.1 -21.1 -16.2 -16.2 -21.2 -

24、21.1 -16.3 -21.1 -16.2 -21.1 4.8 -21.1 -21.1 -21.1 -21.1 -17.8 -17.8 -19.5 -19.5 0 0 13.0 -14.6 -14.6 0 0 0.1 0.1 0.1 0 0 0.6 0.6 0.8 0.8 0.8 4.7 13.4 4.7 15.1 0 0.7 0.1 14.4 -14.3 11.7 13.9 15.1 15.1 13.7 13.7 PURE DIRECT OFF CD DIRECT AMP OFF CD DIRECT AMP ON CD DIRECT AMP OFF PURE DIRECT ONPURE D

25、IRECT OFF CD DIRECT AMP ON CD DIRECT AMP OFF TO FUNCTION (2) CB611 Page 31 E-4 TO FUNCTION (2) W601 Page 31 E-5 TO FUNCTION (1) CB503 Page 31 E-5 TO FUNCTION (2) CB606 Page 31 G-4 TO MAIN (1) CB103 Page 33 A-6 TO MAIN (4) CB283 Page 33 B-1 TO FUNCTION (2) CB607 Page 31 H-4 IC431: LB1641 Motor Driver

26、 23 P1 5 IN 1 1 GND 4VZ 6IN 2 OUT 1 8 VCC 2 10 OUT 2 9 P2 INPUT LOGIC PRE DRIVER 7 VCC 1 IC301, 302, 401, 751: NJM2068MD-TE Dual OP-Amp + OUT1 IN1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 IC801: M66003-0131FP Display Driver 52 Display controller Segment digit select/ output circuit Serial receive

27、 circuit Digit output circuit Clock generator DIG11/ SEG42 51 DIG12/ SEG41 50 DIG13/ SEG40 49 DIG14/ SEG39 48 DIG15/ SEG38 47 DIG16/ SEG37 46 DIG17/ SEG36 45SEG35 XOUT6 Vcc18 Vcc218 Vss5 Vp64 XIN7 CS SCK3 SDATA4 RESET1 SEG00 44 9SEG34 SEG26 17 19SEG25 Segment output circuit Display code RAM (8-bit x

28、 60) CGROM (35 bit x 166) CGROM (35 bit x 16) code select Code write Code/ command control circuit DIG00 63 53DIG10 2 data timing clock dot data write scan pulse ABCDEFGH 1 2 3 4 5 6 IJK 7 8 RX-797 33 *All voltages are measured with a 10M/V DC electronic volt meter. * Components having special chara

29、cteristics are marked Zand must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. I SCHEMATIC DIAGRAM (MAIN) 0 0.9 6.0 0 0 0.7 0.6 0.60.6 0.10.1 -54.7 -54.7 -55.8 -55.8 -55.8 -54.7 -54.1 -54.8 -54.7 -54.7 -54.7

30、-54.7 -54.8 -54.8 -55.3 -54.8 1.2 1.2 1.1 1.6 0.6 0.6 55.7 55.7 55.7 55.755.6 55.4 -1.0 -1.1-1.1 -0.4 -0.5 -0.5 -0.5 0 0 0 0 0 0 0 0 0 0 0 0.1 0.6 0.6 0.6 0.7 0.70.7 0.10.1 1.2 1.2 1.2 -54.2 55.4 55.7 55.7 55.7 55.2 54.6 54.6 54.6 55.2 55.7 -54.2 -54.2 -54.8 -54.8 -54.8 -54.8 -54.8 -54.7 -54.7 -54.8

31、-54.7 -54.7 -55.3-55.3 -54.2 -0.5 -0.5 -0.5 -1.0 -1.0 -1.0 -0.5 0 00 0 0 0 0 0 0 0 0 0 0 0.8 0.1 0.1 0 0.2 0.2 4.7 4.9 6.9 4.9 4.8 5.4 3.4 3.7 23.9 23.9 -18.3 -28.3 -28.2 -28.5 -22.8 -29.1 -29.1 -29.1 -29.1 -29.1 -29.1 -29.1 9.9 9.9 -29.1 -29.1 9.8 0 0 54.654.6 55.2 55.2 55.2 55.2 0.1 0 0.9 6.0 15.1

32、 15.6 15.6 -15.5 -15.5 19.1 19.1 -21.5 -21.6 -21.6 19.1 19.1 19.1 19.219.2 19.1 55.7 (45.1) AC81.4 -55.8 (-45.1) -5.7-19.6 -33.20.1 -19.6 -19.6 -19.6 0 00 0 00 0 00.7 0.1 -32.6 19.0 -19.6 -14.9 -14.8 -19.0 AC66.0 AC30.9 AC6.5 2 CH1 2 CH2 TO OPERATION (1) W802 Page 32 E-8 TO FUNCTION (2) CB605TO POWE

33、R TRANSFORMER Page 31 F-4 TO OPERATION (2) W404 Page 32 E-2 TO MAIN (2) CB257 Page 33 K-6 TO MAIN (5) W291 TO POWER TRANSFORMER or Page 33 I-4 TO POWER TRANSFORMER TO POWER TRANSFORMER SPEAKERS Vout +Vs GND IC101, 102 : LM61CIZ Temperature Sensor IC252 : TC4013BP Dual D Flip Flop 1 2 3 4 5 6 7 1Q 1C

34、P 1CL 1PR 1DATA 1Q VSS 14 13 12 11 10 9 8 VDD 2Q 2CP 2CL 2PR 2DATA Q CP CL Q D PR 2Q Q CP CL Q D PR Point w CH 1 : (+) of C272 CH 2 : Collector of Q271 AC POWER ON (Connect the power cable) AC POWER OFF (Disconnect the power cable) AC POWER ON (Connect the power cable) ABCDEFGH 1 2 3 4 5 6 IJKL 7 8

35、RX-797 34 *All voltages are measured with a 10M/V DC electronic volt meter. * Components having special characteristics are marked Zand must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice. I SCHEMATIC DIAGRAM

36、(XM) SMUTE/CSN MCLK ACKS/CCLK DIF0/CDTI DZFL VDD VSS AOUTL P/S AOUTR 6 PDN 5 1 7 8 LRCK BICK SDTI 4 2 3 10 9 11 12 13 14 VCOM DZFR 15 12 ATT ATT P INTERFACE AUDIO DATA INTERFACE DE-EMPHASIS CONTROL CLOCK DIVIDER MODULATOR MODULATOR 8X INTERPOLATOR 8X INTERPOLATOR SCF SCF IC25 : AK4384ET D/A Convertt

37、er IC24 : SN74LV245APWR Octal 3-State Bus Transceivers 1DIR 2A1 3A2 4A3 5A4 6A5 7A6 8A7 9A8 10GND 20 VCC 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 B8 19 ENG IC26 : NE5532DR Dual OP-Amp + OUT1 IN1 VCC +VCC OUT2 1 2 3 45 +IN1IN2 +IN2 + 6 7 8 IC27 : PQ05RD11 Rgulator VINVO CV GND 4 3 21 I C IC23 : S

38、N74AHCT1G32DCKR Single 2 Input OR 1 2 34 5 Y A B GND VCC 0 0 0 0 0 0 0 0 0 0 3.3 3.3 3.3 3.3 1.2 1.2 1.2 1.2 0 1.2 0 0 0 0 0 0 0 0 1.6 1.6 3.3 3.3 3.3 3.3 3.3 3.3 1.2 2.1 0 5.1 5.1 4.8 4.8 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0.4 0 0 7.2 -7.1 11.0 11.0 11.0 5.3 0.4 4.8 5.15.13.3 3.3 3.35.3 5.1 5.0 5.0 AC9.2 5.1 0 0 4.8 5.15.1 5.1 2.6 2.6 2.6 0 0 0 3.3 3.3 3.3 3.3 3 TO FUNCTION (2) CB604 Page 31 E-8 TO FUNCTION (1) W506 Page 31 C-4 TO POWER TRANSFORMER Point e (Pin 28 of IC1)