Eltax-AVR800-avr-sm维修电路原理图.pdf

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1、6.1 ChannelHome Theatre ReceiverSERVICE MANUALAVR-800CONTENTS Specifications . 2Measurements And Adjustments . 3Troubleshooting. 5IC Internal Diagrams . 6Electrical Parts List. 27Block Diagram. 33Wiring Diagram. 35Schematic Diagrams. 37Printed Circuit Boards . 45Exploded View. 53RadioFans.CN 收音机爱 好者

2、资料库- 2 -SPECIFICATIONSAmplifier SectionOutput Power Stereo Mode : 120W/CH (1% THD 1KHz 8ohm DIN)Surround Mode : 92W/CH (1% THD 1KHz 8ohm DIN)THD : 0.01%DOLBY DIGITAL Mode:Surround : 0 15 msCenter : 0 5 msBack surround : 0 20 msDOLBY PRO LOGIC Mode (Surround):Music : 05 msMovie : 1025 msEmulation : 1

3、025 msFrequency Response:*LINE: 10 Hz 70 kHz, +1/ 3 dBSignal-to-Noise Ratio:*LINE: 100dB (IHF-A)Tone Control:BASS: 10 dB at 100 HzTREBLE: 10 dB at 10 kHzDigital Audio SectionSampling Frequency:32 kHz, 44.1 kHz, 48 kHz, 96 kHzDIGITAL Input Level/Impedance: DIGITAL 1, 2 (OPTICAL): 15 dBm 21 dBmDIGITAL

4、 3 (COAXIAL): 0.5 Vp-p / 75 ohmsFM Tuner Section(Without notes 100.1 MHz, 65 dBf)Tuning Range:87.5 MHz 108.0 MHz (50 kHz steps)Usable Sensitivity (IHF):Mono: 11.2 dBf 50 dB Quieting Sensitivity:Mono: 15.3 dBf Stereo: 38.5 dBf Capture Ratio:2.0 dB Image Rejection Ratio: 45 dB AM Suppression Ratio: 55

5、 dBTotal Harmonic Distortion (1 kHz):Mono: 0.2%Stereo: 0.3%Frequency Response:30 Hz 15 kHz, +1/ 1.5 dBStereo Separation (1 kHz):40 dBSignal-to-Noise Ratio:Mono: 70 dBStereo: 65 dBAM Tuner SectionTuning Range:522 kHz 1,620 kHz (9 kHz steps)Usable Sensitivity:55 dB/mTotal Harmonic Distortion:0.8% at 8

6、5 dB/mSignal-to-Noise Ratio:45 dB at 85 dB/mVideo SectionInput Sensitivity/Impedance:1.0 Vp-p/75 ohmsOutput Level/Impedance:1.0 Vp-p/75 ohmsGeneralPower Requirements:230 V AC, 50 Hz Power Consumption:320W AC Outlets:Switched x 1, 100 W max. Dimensions (W x H x D)435 x 165 x 350 mm (17-1/8 x 6-1/2 x

7、13-3/4)Weight (net):12Kg*LINE means CD, TAPE, VCR/VID 1, TV/VID 2, AUX/VID 3 andDVD/CD. Improvements may result in specifications and featureschanging without notice. Illustrations may differ slightly from production models.RadioFans.CN 收音机爱 好者资料库ItemBandAM30%400HzFM100%(40KHz Dev.)400HzTUNER MODULE

8、TUNER MODULE ModulationModulation frequency- 3 -MEASUREMENTS AND ADJUSTMENTSALIGNMENT INSTRUCTIONSEQUIPMENT NEEDEDAM Signal GeneratorFM Signal GeneratorOscilloscopeVTVM(AC,DC)Test loop antenna(AM Adjustment)Dummy antenna(FM Adjustment)IMPORTANT1.Check power-source voltage.2.Set the function switch t

9、o band aligned.3.Keep the signal input as low as possible to adjust accurately.4.Modulation and modulation frequency.ADJUSTMENT POINTKST-M9014MS1(0)-70 FM/AM AUTO STOP LEVEL ADJUSTMENTFM Signal Generator . . . . Connect to FM ANT Jack (FM IN) through the dummy.AM Signal Generator . . . . Connect to

10、AM ANT. Coil the through the Loop antenn a .BANDStepAdjustmentTUNED Display ONTUNED Display OFFS i g n a l G e n e r a t o rA d j u s t f o rAMFM1212999 82dB999 81dB100.10 25dB100.10 24dBTUNED Display ONTUNED Display OFFSVR03SVR03SVR01SVR01- 4 -AM SGAM LOOP ANTENNAAC EVMOSCILLOSOPEKHzOUTOUTPUT60 cmF

11、M SG75 ohmAC EVMOSCILLOSOPEMHzOUTOUTPUTFM ANT.- 5 -TROUBLESHOOTINGProblemProbable CauseRemedyAmplifierWhen listening to the music in stereo,left/right speakers sounds reversed.Low hum or buzzer sound.Sound is only heard from one channel.Sound cuts off during listening to themusic or no sound even th

12、ough power isON.No sound.Low bass response.An unusual hissing noise is heard whenlistening to the broadcast in stereo, but notheard when listening monaurally.Noise is excessive in both stereo andmonaural broadcasts.Sound is distorted and/or the volume levelbecomes low.Excessive distortion in the sou

13、nd of stereobroadcasts.No sound from the Surround speakers.No sound from the center speaker.No sound from the surround back speakerNo suond from the front speaker.Remote control not working.Speakers are connected wrong.Power line of a fluorescent light is installednear this product.One of the input

14、cords is disconnected.The BALANCE control is set to one side.Speaker impedance is less than prescribedfor this unit.A/B Speaker selectors are turned off.Speaker polarity (+/) is reversed.A slight noise may be heard because themethod used for modulation of FM stereobroadcasts is different than that u

15、sed formonaural broadcasts.Poor location and/or direction of theantenna.Transmitting station is too far away.Broadcast signals are being disturbed.Speaker system connections are notcorrect.SURROUND ON/OFF button is set to OFF.Source being played is not recorded orbroadcast in surround sound or stere

16、o.One or more rear speaker wires is notmaking good contact.SURROUND mode button is not set to DOLBYDIGITAL, DTS, DOLBY PRO LOGICII or 3 STEREO.The surround back speaker cableconnection is incomplete Surround modeis not EX/ES mode.Surround back = NONE has been selectedin SPEAKERS Configuration.Short

17、pins not insert EQ jackWhen speaker A and B is selectedSimultaneously, but speaker B is Notconnection.The batteries are exhausted.The remote control unit is too far from thereceiver or out of the effective range.After checking, if needed, reconnect.Place this product as far away as possiblefrom elec

18、tric devices with interference.Connect the input cords securely.Adjust the BALANCE control.After turning off the power and thenturning it on again, reduce the volume orchange to the correct 8 ohm speakers.Press the A or B speaker selector as applicable.Check all speakers for correct polarity. Try re

19、ducing the treble sound by turningthe treble controls. Try changing the location, height and/ordirection of the antenna. Set the FM mode to monaural bypressing the STEREO/MONO button.(Note that the broadcast will then beheard as monaural sound). If an indoor antenna is being used,change to an outdoo

20、r antenna. Try using an antenna with moreelements.Set the button to the desired surroundmode position.Use surround or stereo source.Check all rear speaker wires for goodconnection.Set the button to Dolby Digital EX, DTS/ES,Dolby Pro LogicII or 3 STEREO.Connect the cable correctly.Set surround mode E

21、X/ES Make thecorrect setting.Insert the short pin Connect the speakerboth A and B.Select speaker A onlyReplace with new batteries.Operate the remote control unit within the effective range.TunerSurround EffectsRemote Control Unit The center and rear speakers only operate when the unit is set on a Su

22、rround Sound mode andthe source material being played is recorded or broadcast in Dolby Digital EX, DTS/ES, Dolby Pro LogicIIsurround sound. Stereo broadcasts or recordings will produce some rear channel effects when played in asurround mode. However, mono sources will not produce any sound from the

23、 rear speakers.- 6 -TC9163AF (FUNCTION/INPUT) : IC51BLOCK DIAGRAMLEVEL SHIFTER212341562783123415627831345678910142811121327262524232221201918171615LATCH CIRCUIT SHIFT REGISTER LEVEL SHIFTERLATCH CIRCUIT L-SR-SVssGNDVDDL-SL-SL-SL-COML-SL-SL-COML-SL-SL-COMSTR-SR-SR-SR-COMR-SR-SR-COMR-SR-SR-COMDATACKTC

24、9164AF (FUNCTION/INPUT) : IC53BLOCK DIAGRAMIC INTERNAL DIAGRAMS- 7 -BLOCK DIAGRAMTC9459F(VOLUME) : IC55 LEVEL SHIFTER212134256374121342563741345678910142811121327262524232221201918171615LATCH CIRCUIT SHIFT REGISTER LEVEL SHIFTERLATCH CIRCUIT L-SR-SVssGNDVDDL-SL-COML-SL-SL-COML-SL-SL-COML-SL-COMSTR-S

25、R-COMR-SR-SR-COMR-SR-SR-COMR-SR-COMDATACKLEVEL SHIFTER212134256374121342563741345678910142811121327262524232221201918171615LATCH CIRCUIT SHIFT REGISTER LEVEL SHIFTERLATCH CIRCUIT L-SR-SVssGNDVDDL-SL-COML-SL-SL-COML-SL-SL-COML-SL-COMSTR-SR-COMR-SR-SR-COMR-SR-SR-COMR-SR-COMDATACKTC9162AF (FUNCTIOIC BL

26、OCK DIAGRAMTC9162AF (FUNCTION/INPUT) : IC54BLOCK DIAGRAM- 8 -M62446FP(VOLUME) : IC56 BLOCK DIAGRAM PIN CONFIGRATIONM62446FP(VOLUME) : IC56 BLOCK DIAGRAM PIN CONFIGRATION- 9 -ModulatorMCLKAINLLRCKSCLKSDTODIFVCOMClock DividerAINRAGNDVADecimationFilterSerial I/OInterfaceVoltage ReferenceCKS1DGNDVDCKS2M

27、odulatorDecimationFilterPDNCKS0AK5381 (A/D CONVERTER) : IC57PIN / FUNCTIONNo. Pin Name I/O Function1AINRIRch Analog Input Pin2AINLILch Analog Input Pin3CKS1IMode Select 1 Pin4VCOMOCommon Voltage Output Pin, VA/2 Bias voltage of ADC input.5AGND-Analog Ground Pin6 VA - Analog Power Supply Pin, 4.5 5.5

28、V7VD-Digital Power Supply Pin, 2.7 5.5V(fs=4k 48kHz), 3.0 5.5V(fs=48k 96kHz)8DGND-Digital Ground Pin9SDTOOAudio Serial Data Output Pin “L” Output at Power-down mode.10LRCKI/OOutput Channel Clock Pin “L” Output in Master Mode at Power-down mode.11MCLKIMaster Clock Input Pin12SCLKI/OAudio Serial Data

29、Clock Pin “L” Output in Master Mode at Power-down mode.13PDNIPower Down Mode Pin “H”: Power up, “L”: Power down14DIFIAudio Interface Format Pin “H” : 24bit I2S Compatible, “L” : 24bit MSB justified15CKS2IMode Select 2 Pin16CKS0IMode Select 0 PinNote: All digital input pins should not be left floatin

30、g.- 10 - SCF DAC DATT DZF LOUT1+ LOUT1- SCF DAC DATT ROUT1+ ROUT1- SCF DAC DATT LOUT2+ LOUT2- SCF DAC DATT ROUT2+ ROUT2- SCF DAC DATT LOUT3+ LOUT3- SCF DAC DATT ROUT3+ ROUT3- Audio I/F Control Register AK4358 MCLK LRCK BICK DCLK DSDL1 DSDR1 3-wire or I2C SDTI1 SDTI2 SDTI3 DSDL2 DSDR2 DSDL3 DSDR3 PCM

31、 DSD SCF DAC DATT LOUT4+ LOUT4- SCF DAC DATT ROUT4+ ROUT4- DSDL4 DSDR4 SDTI4 AK4358 (D/A CONVERTER) : IC58 LOUT1-ROUT1+ 1 2 3 4 5 6 7 8 9 MCLK10 DVDDROUT1- LOUT2+ ROUT2- LOUT3+ LOUT3- ROUT3+ ROUT3- LOUT4+ SDTI413 SDTI114 SDTI215 SDTI316 LRCK17 18 CCLK/SCL19 CDTI/SDA20 CSN/CAD121 DCLK22 DSDL423 36353

32、43332313029282726AVSS AVDD VREFH ROUT4- DIF0 DSDR3 DSDL3 DSDR2 DSDL2 DSDR1 AK4358VQ Top View I2CLOUT2- ROUT2+ LOUT4- DSDR424 11 DVSS12 25DSDL1 TBD PIN LAYOUT (To be determined)- 11 - PIN DESCRIPTION PIN DESCRIPTIONNo.Pin NameI/OFunction1LOUT1-ODAC 1 Lch Negative Analog Output Pin2LOUT1+ODAC 1 Lch Po

33、sitive Analog Output Pin3DZF3OZero Input Detect 3 Pin4DZF2OZero Input Detect 2 Pin5DZF1OZero Input Detect 1 Pin6CAD0IChip Address 0 Pin7ACKSNIAuto Setting Mode Disable Pin(Pull-down Pin)L:Auto Setting Mode, H:Manual Setting Mode8PDNIPower-Down Mode PinWhen atL,the AK4358 is in the power-down mode an

34、d is held inreset.9BICKIAudio Serial Data Clock Pin10MCLKIMaster Clock Input Pin An external TTL clock should be input on this pin.11DVDD-Digital Power Supply Pin. +4.75+5.25V12DVSS-Digital Ground Pin13SDTI4IDAC4 Audio Serial Data Input Pin14SDTI1IDAC1 Audio Serial Data Input Pin15SDTI2IDAC2 Audio S

35、erial Data Input Pin16SDTI3IDAC3 Audio Serial Data Input Pin17LRCKIL/R Clock Pin18I2CIControl Mode Select Pin L:3-wire Serial, H:IC Bus19CCLK/SCLIControl Data Clock Pin I2C=L:CCLK(3-wire Serial),I2C=H:SCL(IC Bus)20CDTI/SDAI/OControl Data Input Pin I2C=L:CDTI(3-wire Serial),I2C=H:SDA(IC Bus)21CSN/CAD

36、1IChip Select Pin I2C=L:Csn(3-wire Serial),I2C=H:CAD1(IC Bus)22DCLKIDSD Clock Pin23DSDL4IDAC4 DSD Lch Data Input Pin24DSDR4IDAC4 DSD Rch Data Input Pin25DSDL1IDAC1 DSD Lch Data Input Pin26DSDR1IDAC1 DSD Rch Data Input Pin27DSDL2IDAC2 DSD Lch Data Input Pin28DSDR2IDAC2 DSD Rch Data Input Pin29DSDL3ID

37、AC3 DSD Lch Data Input Pin30DSDR3IDAC3 DSD Rch Data Input Pin31DIF0IAudio Data Interface Format 0 Pin32ROUT4-ODAC4 Rch Negative Analog Output Pin33ROUT4+ODAC5 Rch Positive Analog Output Pin34VREFHIPositive Voltage Reference Input Pin35A VDD-Analog Power Supply Pin. +4.75+5.25V36A VSS-Analog Ground P

38、in37LOUT4-ODAC4 Lch Negative Analog Output Pin38LOUT4+ODAC4 Lch Positive Analog Output Pin39ROUT3-ODAC3 Rch Negative Analog Output Pin40ROUT3+ODAC3 Rch Positive Analog Output Pin41LOUT3-ODAC3 Lch Negative Analog Output Pin42LOUT3+ODAC3 Lch Positive Analog Output Pin43ROUT2-ODAC2 Rch Negative Analog

39、Output Pin44ROUT2+ODAC2 Rch Positive Analog Output Pin45LOUT2-ODAC2 Lch Negative Analog Output Pin46LOUT2+ODAC2 Lch Positive Analog Output Pin47ROUT1-ODAC1 Rch Negative Analog Output Pin48ROUT1+ODAC1 Rch Positive Analog Output Pin- 12 -PIN ASSIGNMENT.(CS493264)(TOP VIEW)BlOCK DIAGRAM(CS493264)VD1DGN

40、D1AUDATA3, XMT958WR,DS,EMWR,GPIO10RD,R/W,EMOE,GPIO11A1,SCDINA0,SCCLKDATA7,EMAD7,GPIO7CS493XXX-CLG44-pin PLCCTop ViewDATA6,EMAD6,GPIO6DATA5,EMAD5,GPIO5DATA4,EMAD4,GPIO4DATA3,EMAD3,GPIO3DATA2,EMAD2,GPIO2DATA1,EMAD1,GPIO1DATA0,EMAD0,GPIO0VD2DGND2CSSCDIO,SCDOUT,PSEL,GPIO9ABOOT,INTREQEXTMEM,GPIO8SDATAN1M

41、CLKSCLKLRCLKAUDATA0AUDATA1AUDATA2DC789101112131415161718 19 20 21 22 23 24 25 26 27 28654321 44 43 42 41 403938373635343332313029DDRESETAGNDFILT2CLKSELCLKINCMPREQ,LRCLKN2VAFILT1CMPDAT,SCLKN2,RCV958CMPCLK,SCLKN2LRCLKN1VD3SCLKN1,STCCLK2DGND3AUDIO DSP (CS493264 - CLG) : IC59CMPDATSDATAN2CMPCLKSCLKN2CMP

42、REQLRCLKN2SCLKN1STCCLK2LRCLKN1SDATAN1CLKINCLKSELFILTDFILTSVAAGNDDGND(3:1)VD(3:1)XMT95AUDALRCLKSCLKMCLKDCDDEXTMEM.GPIO8A800TINTERQA1,SCDINA0,SCCLKCSSTCParallel or Serial Host InterfaceRESETSCDIO,SCDOUT,PSEL,GPIO9WR,DR,EMWR,GPIO10RD,R/W,EMOE,GPIO11DATA7:0,EMAD7:0,GPIO7:0CompressedData InputInterfaceRA

43、MProgramMemoryROMProgramMemoryRAMDataMemoryRAMOutputBufferOutputFormatterROMDataMemoryPLLClock ManagerRAM InputBuffer24-BitDSP ProcessingDigitalAudioInputInterfaceFramerShifterInputBufferController- 13 -PIN No.Pin NameI/OFunction1,12,23+VD1-Digital Power supply. Normally +2.5v2,13,24DGND-Digital Gro

44、und3AUD3OSPDIF transmitter output/Digital audio output(N.C)4WRIHost write strobe pin(connected to GND with an external resistor)5RDIHost parallel output enable pin(pulled up with an external resistor)6 CS_DA I SPI Serial data input pin7CS_CKISerial control clock input pin8EMAD7I/O9EMAD6I/O10EMAD5I/O

45、11EMAD4I/OSerial data IN/OUTPUT pins(pulled up with an external resistor)14EMAD3I/O15EMAD2I/O16EMAD1I/O17EMAD0I/O18CS_CEIHost parallel chip select pin19SCDIO(AK_DOUT)OSerial control port data ouput pin20INTREQOControl port interrupt request output pin21EXTMEMI/OExternal Memory Chip Selector(pulled u

46、p with an external resistor)22SDATAN1(SDI)IPCM audio data input number 1 pin25SCLKN1(BICK)IPCM audio input bit clock pin26LRCLKN1(LRCK)IPCM audio input sample rate clock pin27CMPDAT(SDI)IPCM audio data input number 2 pin28CMPCLK(BICK)IPCM audio input bit clock pin29CREQ(LRCK)IPCM audio input sample

47、rate clock pin30CLKIN(XIN)IMaster clock input(used external clock)31CLKSEL(GND)IDSP clock mode select pin: connect the GND32FILT1Connects to an external filter for the on-chip phase-locked loop33FILT1Connects to an external filter for the on-chip phase-locked loop34+2.5V-Analog Power supply for cloc

48、k generator . Normally +2.5V35AGND-Analog ground supply for clock generator PLL.36RESET(CS_RST)IMaster reset input pin37DBDATA-Reserved pin and should be pulled up with an external resistor.38DBCLK-Reserved pin and should be pulled up with an external resistor.39AUD2(SDO2)OPCM multi-format digital-a

49、udio data ouput2 pin40AUD1(SDO1)OPCM multi-format digital-audio data ouput1 pin41AUD0(SDO0)OPCM multi-format digital-audio data ouput0 pin42LRCLKIAudio output sample rate clock pin43SCLK(BICK)IAudio ouput bit clock pin44MCLKIAudio master clock output pinPIN DESCRIPTION.(CS493264)- 14 -TC74HCU04(INVE

50、RTER) : IC60 - 15 -IPS0/RX4RX31AVSS482DIF0/RX53TEST24DIF1/RX65AVSS6DIF2/RX77IPS1/IIC8P/SN9XTL010XTL1AVSS47RX2464544AVSS43RX042AVSS41VCOM40R39AVDD38TVDD13NC14TX015TX116BOUT1718UOUT19VOUT20DVDD21DVSS22MCKO1233635343332313029282726INT0OCKS0/CSN/CAD0OCKS1/CCLK/SCLCM1/CDTI/SDACM0/CDTO/CAD1PDNXTIXTODAUXMC