Yamaha-RXV795A-avr-sch 维修电路原理图.pdf

RX-V795a/RDS/HTR-5170/DSP-R795aABCDEFGHIJKL12345678DSP* All voltage are measured with a 10M/DC electric volt meter.* Components having special characteristics are marked Zandmust be replaced with parts having specifications equal to thoseoriginally installed.* Schematic diagram is subject to change without notice.I SCHEMATIC DIAGRAM (DSP)E-65/J-55Pointt (Pin13 of IC3)V : 2V/divH : 50 nsec/divDC range1 : 1 probePoint y (Pin13 of IC14)V : 2V/divH : 50 nsec/divDC range1 : 1 probeIC5 : M5M51288BKJ-20LRAMLINE INPUT BUFFERLINE ADDRESSDECODERI/O DATACONTROL CIRCUITDATA I/OADDRESS INPUTA0A1A2A3A4A5A6A7A8S1S2A9A10A11A12A13A14A15A16DQ1DQ2DQ3DQ4DQ5DQ6DQ7DQ818512MEMORY ARRAY131072X8bit512X2048Vcc(5V)GND(0V)COLUMN I/O CIRCUITCOLUMNADDRESS DECODERCOLUMNINPUT BUFFER162562048CHIP SELECTCIRCUITWRITE ENABLECONTROL INPUTOUTPUT ENABLECONTROL INPUTWOEIC2 : HD74HC02FPELQuad 2 Input NOROther ICsG IC3: YM3436DK See page E-27/J-23G IC4: YSS918-F See page E-28/J-24G IC14: LC87F5164 See page E-31/J-27IC1 : NJM2904MIC811, 13 : PC4570G2Dual OP AmpIC7 : AK43201 bit D/A ConverterIC6 : AK4526A/DREAR LFRONT LDIGITAL INDIGITAL INMAIN LMAIN LCENTER04.9004.94.9004.904.94.904.94.94.94.94.94.963.32.43.12.42.42.602.40.94.70.103.10000000004.84.9000.500.20.20.504.94.9002.42.44.92.304.90004.902.42.42.44.904.900004.902.304.84.94.82.4004.804.9000000004.84.82.44.82.42.42.4002.42.4002.42.44.80-10.94.704.70.20-10.900-10.900-10.900-10.900-10.900-10.900-10.900-10.900-10.9000.6000.60011.500-11.500011.500011.5000-11.50011.52.42.42.42.42.42.4-11.5-11.52.42.42.42.42.42.411.50-11.50002.402.42.52.42.42.402.42.42.42.42.402.402.4000.54.703.12.42.402.42.402.42.42.42.42.42.42.40.10.10.104.84.800.90.9000.10.10.10.14.82.44.904.94.92.44.92.402.42.4003.10002.403.11.503.102.44.84.72.40.90.1 00.90.9000.1004.94.902.32.64.904.94.94.904.94.904.704.904.900004.94.94.904.90000004.92.42.32.34.92.62.52.42.42.42.44.94.92.22.200005000000000004.94.94.92.20.1DSP+DIGITAL PRO-LOGIC DTS DECODERDIRRAMDACP-E66/J56D-1P-E66/J56G-8P-E69/J59F-253 82416571311141210987231647465711832423568IC3IC4IC14RadioFans.CN 收音机爱 好者资料库RX-V795a/RDS/HTR-5170/DSP-R795aABCDEFGHIJK12345678I SCHEMATIC DIAGRAM (INPUT)E-66/J-56* All voltage are measured with a 10M/DC electric volt meter.* Components having special characteristics are marked Zandmust be replaced with parts having specifications equal to thoseoriginally installed.* Schematic diagram is subject to change without notice.INPUT(This waveform is not available by pushing the power switch ON and OFF.)Disconnect the power cordfrom the AC outlet.With the POWER ON, dis-connect the A/C power cord.Reconnect the A/C powercord and the above wave-forms will start.0VPointe (Pin3 of IC21)V : 2V/divH : 50 nsec/divDC range1 : 1 probePointr CH1 : Pin1 of IC21 CH2 : Pin29 of IC21H : 0.5 sec/divDC range1: 1 probeV : 2V/div (CH1)V : 2V/div (CH2)FRONT LREAR RMAIN LMAIN LCENTER 43400004.911.3-11.511.611.600000-11.511.611.600000-11.54.72.04.84.94.9004.9004.94.904.804.9001.200.300.20.7-11.40011.20000000000000000000000000000011.60000000000000000000000000000000 000000-22.20.10.10.100000.30.3021.800000000021.80000-22.200000-22.20-11.50-11.104.9004.900.304.9004.904.90.14.94.94.901.20.31.404.94.52.24.74.94.94.74.94.900004.94.904.94.904.94.94.9000004.94.9004.94.94.54.94.74.911.611.600000PHONO MM EQ AMPINPUT SELECTORTAPE MONITORP-E69/J59TO VIDEO(1)C-2P-E67/J67D-8P-E65/J55B-8P-E68/J58H-2P-E71/J61: NOT USED : USED CIRCUIT CHANGES BY MARKET.A-5P-E69/J59A-5P-E69/J59I-3P-E65/J55J-4P-E72/J62 (J,U,C,A,L,R,T models)P-E73 (B,G models)H-5813265475687234117456832236578415321864736547218IC21RadioFans.CN 收音机爱 好者资料库RX-V795a/RDS/HTR-5170/DSP-R795aABCDEFGHIJKL12345678INPUT & VIDEOI SCHEMATIC DIAGRAM (INPUT & VIDEO)* All voltage are measured with a 10M/DC electric volt meter.* Components having special characteristics are marked Zandmust be replaced with parts having specifications equal to thoseoriginally installed.* Schematic diagram is subject to change without notice.E-67/J-57IC17 : LC78211Analog Function SwitchIC11 : NJM2068MDIC12, 20 : PC4570G2IC13, 15, 16 : M5220FPDual OP AmpIC18 : LC78213Analog Function SwitchIC19 : LC78212Analog Function SwitchIC402404, 407, 408 : LA7956Video SwitchIC401 : TC4053BPTriple 2-Channel Analog Multiplexers/DemultiplexersOther ICsG IC21: HD6433397A97F See page E-36/J-30G IC406: LC74781-9626 See page E-35/J-29IC405 : PD4066BCQuad Analog Switch/Multiplexer16VDDLOGIC LEVEL CONVERTER12OX7VEE6INHOUT C IN13IXOUT C IN2OYOUT C IN1IYOUT C IN5OZOUT C IN3IZOUT C IN4Z-COMMON1514X-COMMONY-COMMON9C10B11A8VSSREAR LCENTER5.05.75.65.611.10011.1005.000.11.11.80.7008.88.89.39.39.8009.800.50.51.12.72.72.73.40.10.311.11.52.12.52.50.50.505.004.44.91.91.14.34.35.01.10002.5011.13.83.83.85.33.83.83.85.3011.511.311.1011.511.30011.111.33.83.811.13.803.811.511.35.62.405.05.05.005.002.05.01.101.12.500.12.42.44.94.905.011.13.803.811.511.35.711.13.803.811.511.35.71.11.52.21.000.50.55.05.000011.15.65.611.111.505.011.15.7011.15.60.70.70.7023.823.80.70.71.3AC12.6SUB POWER SUPPLYS-VIDEO AMP & SELECTORSUPERIMPOSEREGULATORSYNC SIGNAL DETECTORSPEAKERRELAY DRIVEP-E66/J56D-8P-E69/J59I-2P-E70/J60I-6 TO MAIN (1) TO MAIN (5)P-E68/J58A-1P-E71/J61TO MAIN (2)G-2P-E70/J60TO MAIN (1)I-5CIRCUIT CHANGES BY MARKET.: NOT USED : USED IC406RX-V795a/RDS/HTR-5170/DSP-R795aABCDEFGHIJK12345678I SCHEMATIC DIAGRAM (OPERATION)* All voltage are measured with a 10M/DC electric volt meter.* Components having special characteristics are marked Zandmust be replaced with parts having specifications equal to thoseoriginally installed.* Schematic diagram is subject to change without notice.E-68/J-58OPERATIONIC102 : LC75710NEFL Display DriverOther ICG IC102 : LC75712E See page E-35-27.9-27.9-27.9-27.9-27.9-27.9-29.6002.32.44.74.904.9004.94.9-27.9-27.9-27.9-27.9-27.9-27.9-27.9-28.0-27.8-27.8-29.6-22.5-28.84.7-28.14.7-27.8-28.14.74.7-27.80-23.6-28.9-28.9-13.3-13.305.65.68.84.94.95.60.60.604.44.9-11.48.88.15.76.34.8000008.84.94.94.9-22.3-22.3-23.6-28.8-28.1-28.0-28.0-27.9-27.9-27.9-27.9-27.9-27.9-27.9-27.9-27.9-27.9-27.9-27.9-27.9FULL MUTE DRIVEDISPLAY DRIVESYSTEM CONTROLRESETCIRCUIT CHANGES BY MARKET.P-E66/J56H-8P-E67/J57I-6P-E70/J60I-4: NOT USEDRX-V795a/RDS/HTR-5170/DSP-R795aABCDEFGHIJKL12345678* All voltage are measured with a 10M/DC electric volt meter.* Components having special characteristics are marked Zandmust be replaced with parts having specifications equal to thoseoriginally installed.* Schematic diagram is subject to change without notice.E-69/J-59I SCHEMATIC DIAGRAM (OPERATION)OPERATIONIC202 : PC4570HADual OP-AmpIC251253, 257, 258 : PC4570G2Dual OP-AmpIC201 : NJM2068LDDual OP AmpIN12+IN13VCC4+IN25IN26OUT27+VCC8OUT11+VO12Vm13+Vm14VEE5+Vm26Vm27VO28VCC9VCC11 + +2IC254 : LB1641Motor DriverIC255, 256 : TC9299PElectric Controlled VolumeIC351 : TC74HCU04APHex InvertersIC352 : HD74HC00PQuadruple 2-input Positive NAND GatesIC353 : HD74HC153PDual 4 to 1 Data SelectorsREAR LMAINDIGITAL INCENTER0.30004.804.34.804.34.8011.300000-11.311.300011.3000-11.300011.311.5000-11.400011.5000000-11.4000-11.3000-11.311.3000000-11.300004.8004.34.80000.34.84.804.84.804.30004.83.12.54.84.84.80000004.94.34.34.804.800000000-11.3000000011.3000000011.30011.3000011.300.12.00.104.80.50.71.204.54.510.410.40.70.5SPEAKER SETTING CONTROLSPEAKER LEVEL CONTROLMOTOR DRIVEVOLUME AMPDIGITAL SELECTORCIRCUIT CHANGES BY MARKET.P-E66/J56E-1P-E67/J57to VIDEO (1)G-8P-E65/J55B-1P-E70/J60A-5P-E71/J61A-4P-E66/J56G-1P-E66/J56C-8: NOT USED3281654718365476547218326475623812381475RX-V795a/RDS/HTR-5170/DSP-R795aABCDEFGHIJK12345678* All voltage are measured with a 10M/DC electric volt meter.* Components having special characteristics are marked Zandmust be replaced with parts having specifications equal to thoseoriginally installed.* Schematic diagram is subject to change without notice.E-70/J-60I SCHEMATIC DIAGRAM (MAIN)Each voltage given here represents that in the top side of IMPEDANCE SELECTOR, butthe one in the parentheses ( ) is that in the bottom side.MAINMAIN LCENTER-48.9(-40.5)48.8(40.5)01.20.70.600.724.10-42.2-29.6-30.200-48.10.6-0.4-1.00.90.40.948.8(40.5)00.448.8(40.5)0-0.4-48.9 (-40.5)-0.4-1.0-48.9 (-40.5)048.648.8(40.5)0048.6-48.1-48.6-1.013.60-48.800-48.00.6-0.4-1.01.00.41.048.8 (40.5)00.448.8(40.5)-0.5-1.0-48.9 (-40.5)0-0.5-48.9 (-40.5)0048.4-48.0-48.5-1.0-48.800-11.400-11.400-11.400-11.40-48.10.6-0.4-1.01.00.41.048.8 (40.5)00.448.8(40.5)-0.5-1.0-48.9 (-40.5)0-0.5-48.9 (-40.5)0048.5-48.1-48.6-1.0-48.8000-11.4SPEAKER RELAY DRIVECENTER POWER AMPMAIN R POWER AMPMAIN L POWER AMPMUTINGMUTINGMUTINGBPOWER SUPPLYCIRCUIT CHANGES BY MARKET.P-E71/J61G-5P-E71/J61G-5P-E67/J57TO VIDEO (2)I-5P-E71/J61G-5P-E68/J58B-1P-E69/J59E-5P-E67/J57H-7: NOT USEDRX-V795a/RDS/HTR-5170/DSP-R795aABCDEFGHIJKL12345678MAIN* All voltage are measured with a 10M/DC electric volt meter.* Components having special characteristics are marked Zandmust be replaced with parts having specifications equal to thoseoriginally installed.* Schematic diagram is subject to change without notice.E-71/J-61I SCHEMATIC DIAGRAM (MAIN)Each voltage given here represents that in the top side of IMPEDANCE SELECTOR, butthe one in the parentheses ( ) is that in the bottom side.REAR LREAR LMAINCENTER-32.631.8-19.919.0010.500-48.40.60.4-1.00.90.40.948.8 (40.5)00.448.8 (40.5)-0.5-1.0-48.9 (-40.5)000-0.5-48.9 (-40.5)0048.4-48.4-48.9-1.0-49.100-11.40-48.40.6-48.4-1.0-48.8-0.4-1.0-48.9 (-40.5)0.40.948.8 (40.5)00048.40.448.8 (40.5)31.924.024.6-24.9-16.5-8.2005.00.5012.119.0012.019.00-11.7-19.916.48.2024.424.40024.00024.024.0000-0.4-48.9 (-40.5)-1.00.9-0.4-49.1000-11.4-11.400AC75.8AC51.6AC62.6AC31.6AC9.7AC6.5REAR L POWER AMPREAR RPOWER AMPREGULATORMUTINGMUTINGMUTINGCIRCUIT CHANGES BY MARKET.P-E71/J61G-6P-E71/J61G-7P-E70/J60I-4P-E66/J56H-1P-E69/J59E-6P-E70/J60I-4P-E67/J57H-5P-E70/J60I-7: NOT USEDRX-V795a/HTR-5170/DSP-R795aABCDEFGHIJK12345678I SCHEMATIC DIAGRAM (TUNER)E-72/J-62Each voltage given here represents that in the FM (98. 1MHz, STEREO) reception modebut the one in the parentheses ( ) is that in the AM (1080kHz, MANL) reception mode.* All voltage are measured with a 10M/DC electric volt meter.* Components having special characteristics are marked Zandmust be replaced with parts having specifications equal to thoseoriginally installed.* Schematic diagram is subject to change without notice.TUNERGPK1 : ENV-172C8G1R (V2909100) U, C, R, T modelsGPK1 : ENV-172A4G1 (V2716700) A, L modelsGPK1 : ENV-142C2G1R (V2909000) J modelIC1 : LA1266AM/FM IFIC2 : LC72131PLL ControllerIC3 : LA3401MPXV : 2V/divH : 0.1sec/div2VSAMPLE 0.1usPoint1 (Pin22 of IC2)DC range1 : 1 probe0VFMFMAMAM10.4(0)10.5(11.5)0.1(10.6)5.1(5.0)(4.4)(0)5.1(5.2)7.7 (7.6)2.4(1.1)2.4(1.1)2.4 (1.1)0 (0)11.0 (11.1)11.0 (11.1)11.0 (11.1)0 (0)3.9(3.7)2.3(2.2)0 (2.1)3.0 (2.8)3.4(2.1)3.9(3.5)3.9(3.5)(1.9)(3.5)5.011.4(11.5)5.7(5.7)5.7(5.7)0(0)2.4(0)4.9(5.0)0(2.5)(0)2.44.9(5.0)(1.0) 1.0(1.0) 1.0(5.0)4.5(0)0(0)00.1 10.6(0)0(0)0(0.2)11.4(0)0(0)0(0)0(0)0(2.5)(2.5)2.40(11.5)(11.5)11.411.4(0.2)(1.5)3.90(10.5)1.52.4(1.1)(2.8)0(2.2) 2.6(2.0) 1.51.511.02.4(11.1)3.0(2.8)(2.1)3.1(3.1)3.1(3.1)3.1(3.1)3.1(3.1)3.0(3.0)3.1(3.1)3.1(3.1)3.0(3.0)3.1(3.1)0(6.9)11.1 (11.2)3.4(3.6)2.8(7.0)2.8(5.2)2.8(5.2)2.8 (9.1)2.8 (2.8)0(0)4.9(0)4.9(5.0)0(0)02.8(9.1)0 (0)2.8(9.1)4.9(4.9)0(0)0 (0)4.4(5.2)12.5MONAURAL DISTORTION ADJ.SIGNAL METER ADJ.DISCRIMINATOR BALANCE ADJ.SEPARATION ADJ.(9.4)9.30(0)AM SENSITIVITY87.5MHz98.0MHz108.0MHz1.9V4.5V7.8V531KHz1080KHz1611KHz1.3V5.0V7.3VAMFMVT(EX only)FM(J only)AM7.3V5.0V1.3V1611KHz1080KHz531KHz8.1V4.1V1.6V90.0MHz83.0MHz76.0MHzREGULATORPLLMPXAM/FM IFCIRCUIT CHANGES BY MARKET.bottom viewTO INPUT (1)E-8P-E66/J56: NOT USED : USED RX-V795aRDSABCDEFGHIJKL12345678TUNERE-73I SCHEMATIC DIAGRAM (TUNER)Each voltage given here represents that in the FM (98. 1MHz, STEREO) reception modebut the one in the parentheses ( ) is that in the AM (1080kHz, MANL) reception mode.IC4 : LC72720NRDS Decoder & ControllerGPK1 : ENV-172A4G1 (V2716700)* All voltage are measured with a 10M/DC electric volt meter.* Components having special characteristics are marked Zandmust be replaced with parts having specifications equal to thoseoriginally installed.* Schematic diagram is subject to change without notice.IC1 : LA1266AM/FM IFIC2 : LC72131PLL ControllerIC3 : LA3401MPXSAMPLE 50us2V2VV : 2V/divH : 50nsec/divPoint1 (Pin22 of IC2)DC range1 : 1 probe0VSAMPLE 0.1us2VV : 2V/divH : 0.1sec/divPoint2 (Pin12 of IC4)DC range1 : 1 probe0VAMFMAMFM(0)01.5(2.0) 1.52.7(2.3)0(2.9)(1.1) 2.41.5(1.9)(10.6) 0(3.5) 3.9(3.5) 3.9(2.2) 3.111.2SIGNAL METER ADJ.(6.9)03.1(3.1)5.1(5.1)3.1(3.1)3.1(3.1)5.1(5.1)3.1(3.1)3.2(3.2)3.1(3.1)3.1(3.1)00.5(4.5)(0)(0)4.9(0)0(2.8)2.8(9.2)2.8(5.5)2.8(5.5)2.8(7.3)2.8(2.0)(11.3)3.4(1.5)(9.2)2.8(0)0(2.1)2.5(2.8)3.1(11.2)11.02.63.1 (2.8)(2.2)(2.3)2.3(3.7)3.8(9.2)2.8(0)0(11.2)(0)0(11.2)11.0(11.2)11.1(11.2)2.411.1(0)02.4 (1.1)(1.1)2.4(1.1)2.4 (2.4)2.5(2.5)(0)0(0)0(0)0(0)0(0)0(0.2)11.5(0)0(10.6)0.1(0)04.1(5.1)(1.0)1.1(1.0)1.1(4.9) 4.92.4(0)(2.4) 0(4.5) 0.5(2.4)0(0)5.6(5.6)5.6(11.6)11.5(4.9)4.9(2.5)2.5(0)0(0)0(2.1)(2.1)2.12.1(0)04.2(4.2)(2.1)2.1(2.1)2.1(2.4)2.4(4.9)4.9(0)0(4.9)4.9(0)0(0)0(0)0(0)02SEPARATION ADJ.(4.9)4.9(0)0(0)0AM SENSITIVITY ADJ.(4.3)4.35.1(5.1)(7.5)7.6(9.4)9.4(5.1)5.0(10.6)0.1(11.6)10.4(0)10.3DISCRIMINATOR BALANCE ADJ.MONAURAL DISTORTION ADJ. FMVTAM7.4V5.1V1.4V1611KHz1080KHz531KHz8.3V4.1V1.7V108.0MHz98.1MHz87.5MHz11.5(0.2)11.5(11.6)(9.4)01(0)0(4.9)4.9(5.6)0REGULATORRDS DECODERAM/FM IFMPXPLLTO INPUT (1)E-8P-E66/J56bottom view