Yamaha-RX797-rec-sch(1) 维修电路原理图.pdf

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1、RX-79730I BLOCK DIAGRAMHead PhoneC834,835C121,122Front AFront BRY101RY102RY103PowerAmpC119,120C143C144+BBGD116-119+15V15V22VQ130Q131+1515GC160C161FL1FL2C33+5BUS+5VIC22+5X+3.3XGXMPWRSW101SW101D120R171R172GQ102VPC803+D110D121D122ACLACLACHACHACL2R227ACL2ACL+5VIC27D21+3.3VIC21Q254D259PowerDetector/Reset

2、Q252POWER RELAY+5.5VIC601Q605G+5S+5M+5BUD605D604D603POWER SAVERY251s10C261D261IC251,252,253POWER RELEY70SPEAKER RELEY24,25,63,65MUTE CONTROL8127POWER SAVEXMPWR55-60VIDEO SELECTOR72,76,77Micro ProcessorM30622IC602XL60116MHzTUNER/RDS/XMZONE2 VOLUMESERIAL CONTROLANALOG1315ZONE2MD/TAPEVCRVCR-RECMutingQ5

3、01-504Volume ICYAC526IC503RecOutSelectorLA7956IC452InputSelectorLA7956IC451RY251F252F251/J252TE251/MIMTIC3516dB/POMTMIMT/Z2MTSubWoofer OUTPure Direct OffMAIN INPRE OUTMutingQ401,402MutingQ354-355/CDMTMutingQ301,302MutingQ351,356LPF/MIXIC510,504NJU7313AMMotor VolumeVR431/IC431ToneCon/BalanceVR751-754

4、IC40119,22,258,9,12+10.6dB/+16dB19,2013,2415,2125,26 REC A23,24 REC B3,282,298,234,2711,205,267,2410,211,23,45,69,1011,1213,1415,167,8INAINBINCINEINFINGINHVCRDVDDTVVCRDVDDTVDVDDTVINDPure Direct SWSW402CD Direct SWSW401SwitchIC501AnalogCompositeFM/AMIC301IC302IC505IC506IC507IC508PHONO EQATT11dBPHONOD

5、VDCDVCRMD/TAPEFM/AMXMDTI2SIC1AK4384ET2ch DACIC25IC26IC509XM11,103TUNER7.2MHzDTVDTV/CBLVCR-PBDVDPRI80PRV90PRD91THML92THMR93POWERDETECT20/RESET12IR REMOTEU801VOLUMEVR431, IC431INPUT SELECTORSW827FL DISPLAYV801FL DRIVERIC80183,100,1,294,9584,8578,7974,18,1975KEYSW801-818POWER SW/STANDY SW/ZONE2 SWSW830

6、/SW825/SW826RecOut/Zone2 SelectorBD3841FSIC50261MONITOR OUT1Zone2SelectorLA7956IC453Zone2CompositeREC OUT18468684CD Direct OnCD Direct OffU, C modelsXM See page 34 SCHEMATIC DIAGRAMOPERATION See page 32 SCHEMATIC DIAGRAMMAIN See page 33 SCHEMATIC DIAGRAMOPERATION See page 32 SCHEMATIC DIAGRAMOPERATI

7、ON See page 32 SCHEMATIC DIAGRAMFUNCTION See page 31 SCHEMATIC DIAGRAMU, C modelsXM See page 34 SCHEMATIC DIAGRAMRadioFans.CN 收音机爱好者资料库ABCDEFGH123456IJK78RX-79731I SCHEMATIC DIAGRAM (FUNCTION)*All voltages are measured with a 10M/V DC electronic volt meter.* Components having special characteristic

8、s are marked Zandmust be replaced with parts having specifications equal tothose originally installed.* Schematic diagram is subject to change without notice.0.10.10.10.24.80.20.30.30.315.10000000000000000-14.4-14.7-14.7-14.7-14.7014.706.16.24.83.93.93.93.93.93.93.93.83.93.911.811.811.914.312.211.81

9、1.80.10.10.16.23.93.90.10.1000000000013.2-13.200000013.2-13.200000013.2-13.20000000.70.70000000000000000-14.9015.1000000000000000000000000000000014.314.3-14.1-14.1000000000000000000007.2-7.100000000000000000014.9-14.500004.86.26.27.26.26.86.80.50.5-6.17.90.17.9-7.1-14.9-14.915.115.1-6.10000000006.26

10、.2-6.1-6.10.70.7000013.4-13.2000004.84.84.84.84.84.84.85.10.14.84.84.84.84.84.82.42.40000000004.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.84.14.14.14.14.8-14.7-14.70.10004.93.03.61.71.73.60.90.904.80.10.14.80.10.10.10.10.50.10.10.10.10.10.10.10.104.84.54.14.10.30.30.30.

11、30.30.34.700000005.65.65.65.64.94.94.94.84.84.85.25.55.511.911.911.215.112.44.80.10.14.29.81CD DIRECT AMP ONCD DIRECT AMP OFFCD DIRECT AMP OFFCD DIRECT AMP OFFCD DIRECT AMP ONTO XM CB23Page 34 I-5TO OPERATION (2) W401Page 32 A-4TO OPERATION (2) CB407Page 32 A-2TO OPERATION (2) CB401Page 32 A-3TO XM

12、CB24Page 34 I-3TO MAIN (4) CB284Page 33 B-1TO OPERATION (1) CB801Page 32 A-7TO OPERATION (13) CB301Page 32 K-6IC351, 504510: NJM2068MD-TEDual OP-Amp+OUT1IN1VCC+VCCOUT212345+IN1IN2+IN2 +678IC501: NJU7313AMAnalog Function Switch13NC18 NC234567891011121430129282726252423222120191715CONTROLLEVEL SHIFTER

13、LATCHLEVEL SHIFTERLATCHL1L2L3L4L-COM1L5L6L-COM2L7L8L-COM3STVDDVEER1R2R3R4R-COM1R5R6R-COM2R7R8R-COM3DATACKVSS16IC451453: LA7956Video SwitchDRIVERVIDEOOUT1A2B3VIN14GND5VIN26VCC7VIN38VIN49CONTROL4-INPUT 1-OUTPUTVIDEO SWITCH6 dBAMPIC502 : BD3841FSFunction SwitchF-SW1F-SW1: INPUT FUNCTION 1F-SW2: INPUT F

14、UNCTION 23231302928272625242322212019181712345678910111213141516DGNDF-SW2CLDAVEEGNDVCCRECA1RECA2RECB1RECB2RECC1RECC2OUT1OUT2INI1INI2INA1INA2INB1INB2INC1INC2IND1IND2INE1INE2INF1INF2ING1ING2INH1INH2LOGIC+IC603 : LC72722PMRDS Decoder+ +REFERENCEVOLTAGE57kHzbpf(SCF)CCBTESTPLL(57kHz)ANTIALIASINGFILTERSMO

15、OTHINGFILTERRAM(24 BLOCK DATA)ERROR CORRECTION(SOFT DECISION)SYNC/ECCONTROLLERSYNCDETECT-1DATADECODERCLOCKRECOVERY(1187.5Hz)MEMORYCONTROLOSC/DIVIDERVREFCLK(4.332MHz)SYNCDETECT-2VDDAVSSDVDDDRDS-IDSYNCSYRVSSAMPX INDOCLDICET1T2T3T4T5T6T7X INVREFFL OUTC INX OUT3141519182415642202122237891011 16 171312IC

16、503 : YAC526-EZE22 Channel High Grade Digital VolumeIN1OUT1TE1TE2TE3ZCEN1ZCEN2OUT2242223 56 71415131638492112111021REF1BREF1AREF2AREF2BIN2AVDDDGNDREFAVSSDVSSSDATAO (Open Drain)SDATAISCLKCSNVol B: 10k0 -95dB0 -95dB0 +31.5dB160 +31.5dBOP AmpZeroCrossingDetectorZeroCrossingDetectorS/PRegisterControlReg

17、isterOP AmpVol B: 10kVol A: 15k100100Vol A: 15kPoint q (Pin 13 of IC602)RadioFans.CN 收音机爱好者资料库ABCDEFGH123456IJKL78RX-79732I SCHEMATIC DIAGRAM (OPERATION)*All voltages are measured with a 10M/V DC electronic volt meter.* Components having special characteristics are marked Zandmust be replaced with

18、parts having specifications equal tothose originally installed.* Schematic diagram is subject to change without notice.0000000000-12.8-15.3-14.6-16.2-16.2-16.2-16.2-16.2-16.2-16.2-16.2-16.2-16.2-16.2-16.0-16.1-17.8-17.8-19.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-15.3-

19、15.714.700014.7000000-14.500000000.80.8-14.5-18.5-18.5-21.3-17.8-19.4-16.3-21.1-21.1-21.1-21.1-21.1-21.1-21.1-21.1-21.1-21.1-21.1-19.5-21.1-16.2-16.2-16.2-16.2-19.5-17.8-16.2-16.2-14.62.14.84.84.84.802.2-17.8-19.4-17.8-16.0-16.1-16.2-17.8-21.2-19.40000-19.54.8-16.2-19.504.84.8-19.5-19.5-19.5-19.5-19

20、.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-19.5-21.3-16.3-21.1-21.1-21.1-16.2-16.2-21.2-21.1-16.3-21.1-16.2-21.14.8-21.1-21.1-21.1-21.1-17.8-17.8-19.5-19.50013.0-14.6-14.6000.10.10.1000.60.60.80.80.84.713.44.715.100.70.114.4-14.311.713.915.115.113.713.7PURE DIRECT OFFCD DIRECT AMP OFFCD DIRECT AMP O

21、NCD DIRECT AMP OFFPURE DIRECT ONPURE DIRECT OFFCD DIRECT AMP ONCD DIRECT AMP OFFTO FUNCTION (2) CB611Page 31 E-4TO FUNCTION (2) W601Page 31 E-5TO FUNCTION (1) CB503Page 31 E-5TO FUNCTION (2) CB606Page 31 G-4TO MAIN (1) CB103Page 33 A-6TO MAIN (4) CB283Page 33 B-1TO FUNCTION (2) CB607Page 31 H-4IC431

22、: LB1641Motor Driver23P15IN 11GND4VZ6IN 2OUT 18VCC 210OUT 29P2INPUT LOGICPRE DRIVER7VCC 1IC301, 302, 401, 751:NJM2068MD-TEDual OP-Amp+OUT1IN1VCC+VCCOUT212345+IN1IN2+IN2 +678IC801: M66003-0131FPDisplay Driver52DisplaycontrollerSegmentdigitselect/outputcircuitSerialreceivecircuitDigit outputcircuitClo

23、ckgeneratorDIG11/SEG4251DIG12/SEG4150DIG13/SEG4049DIG14/SEG3948DIG15/SEG3847DIG16/SEG3746DIG17/SEG3645SEG35XOUT6Vcc18Vcc218Vss5Vp64XIN7CSSCK3SDATA4RESET1SEG00449SEG34SEG261719SEG25SegmentoutputcircuitDisplay codeRAM(8-bit x 60)CGROM(35 bit x 166)CGROM(35 bit x 16)codeselectCodewriteCode/commandcontr

24、ol circuitDIG006353DIG102datatimingclockdot datawritescan pulseABCDEFGH123456IJK78RX-79733*All voltages are measured with a 10M/V DC electronic volt meter.* Components having special characteristics are marked Zandmust be replaced with parts having specifications equal tothose originally installed.*

25、 Schematic diagram is subject to change without notice.I SCHEMATIC DIAGRAM (MAIN)00.96.0000.70.60.60.60.10.1-54.7-54.7-55.8-55.8-55.8-54.7-54.1-54.8-54.7-54.7-54.7-54.7-54.8-54.8-55.3-54.81.21.21.11.60.60.655.755.755.755.755.655.4-1.0-1.1-1.1-0.4-0.5-0.5-0.5000000000000.10.60.60.60.70.70.70.10.11.21

26、.21.2-54.255.455.755.755.755.254.654.654.655.255.7-54.2-54.2-54.8-54.8-54.8-54.8-54.8-54.7-54.7-54.8-54.7-54.7-55.3-55.3-54.2-0.5-0.5-0.5-1.0-1.0-1.0-0.500000000000000.80.10.100.20.24.74.96.94.94.85.43.43.723.923.9-18.3-28.3-28.2-28.5-22.8-29.1-29.1-29.1-29.1-29.1-29.1-29.19.99.9-29.1-29.19.80054.65

27、4.655.255.255.255.20.100.96.015.115.615.6-15.5-15.519.119.1-21.5-21.6-21.619.119.119.119.219.219.155.7 (45.1)AC81.4-55.8(-45.1)-5.7-19.6-33.20.1-19.6-19.6-19.6000000000.70.1-32.619.0-19.6-14.9-14.8-19.0AC66.0AC30.9AC6.52CH12CH2TO OPERATION (1) W802Page 32 E-8TO FUNCTION (2) CB605TO POWER TRANSFORMER

28、Page 31 F-4TO OPERATION (2) W404Page 32 E-2TO MAIN (2) CB257Page 33 K-6TO MAIN (5) W291TO POWER TRANSFORMERorPage 33 I-4TO POWER TRANSFORMERTO POWER TRANSFORMERSPEAKERS Vout +Vs GNDIC101, 102 : LM61CIZTemperature SensorIC252 : TC4013BPDual D Flip Flop12345671Q1CP1CL1PR1DATA1QVSS141312111098VDD2Q2CP2

29、CL2PR2DATAQCPCLQDPR2QQCPCLQDPRPoint wCH 1 : (+) of C272CH 2 : Collector of Q271AC POWER ON(Connect the power cable)AC POWER OFF(Disconnect the power cable)AC POWER ON(Connect the power cable)ABCDEFGH123456IJKL78RX-79734*All voltages are measured with a 10M/V DC electronic volt meter.* Components hav

30、ing special characteristics are marked Zandmust be replaced with parts having specifications equal tothose originally installed.* Schematic diagram is subject to change without notice.I SCHEMATIC DIAGRAM (XM)SMUTE/CSNMCLKACKS/CCLKDIF0/CDTIDZFLVDDVSSAOUTLP/SAOUTR6PDN5178LRCKBICKSDTI42310911121314VCOM

31、DZFR1512ATTATTPINTERFACEAUDIODATAINTERFACEDE-EMPHASISCONTROLCLOCKDIVIDER MODULATOR MODULATOR8XINTERPOLATOR8XINTERPOLATORSCFSCFIC25 : AK4384ETD/A ConvertterIC24 : SN74LV245APWROctal 3-State Bus Transceivers1DIR2A13A24A35A46A57A68A79A810GND20 VCC18 B117 B216 B315 B414 B513 B612 B711 B819 ENGIC26 : NE5

32、532DRDual OP-Amp+OUT1IN1VCC+VCCOUT212345+IN1IN2+IN2 +678IC27 : PQ05RD11RgulatorVINVOCVGND4321I CIC23 : SN74AHCT1G32DCKRSingle 2 Input OR12345YABGNDVCC00000000003.33.33.33.31.21.21.21.201.2000000001.61.63.33.33.33.33.33.31.22.105.15.14.84.8000000000000000000.4007.2-7.111.011.011.05.30.44.85.15.13.33.33.35.35.15.05.0AC9.25.1004.85.15.15.12.62.62.60003.33.33.33.33TO FUNCTION (2) CB604Page 31 E-8TO FUNCTION (1) W506Page 31 C-4TO POWER TRANSFORMERPoint e (Pin 28 of IC1)