Kenwood-KRFV7771D-avr-sm2 维修电路原理图.pdf

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1、(E,T type)AUDIO VIDEO SURROUND RECEIVERKRF-V7771D/V7771DESERVICE MANUAL 1999-1/B51-5498-00 (K/K) 1612PHONESINPUT SELECTORVOLUMEMPEGCinema Re-EQDOLBY DIGITALCLIP INDICATORPOWERON/STANDBYABSPEAKERSMUTEDOWNUPDISPLAY MODES VIDEOVL-AUDIO-RCD2 / TAPE2MONITORON OFFAV AUXSYSTEMCONTROLFRONT SPEAKERS(4-16 )CE

2、NTER SPEAKER(4-16 )SURROUND SPEAKERSDIGITAL INVIDEO 2COAXIALVIDEO 3COAXIALVIDEO 4OPTICALCD 1OPTICALSL 16XS 8( SL 16 )( XS 8 )(4-16 )SWITCHED TOTAL90W MAX.LRALRLCRBSL 16TEXTLRRANTENNAAM-FM 75GNDCD1PHONOMD/ TAPE 1RECOUTPLAYINRECOUTPLAYINPLAY INPLAY INCD2 /TAPE 2MONITORMONITOR OUTFRONTFRONTSURROUNDSURR

3、OUNDCENTERCENTER SUBWOOFERSUBWOOFERLLRLRVIDEOS VIDEOPRE OUTVIDEO4 6CH. INPUTAUDIOVIDEO 3VIDEO 4PLAY INVIDEO 2VIDEO 1LRAUDIOPLAY INRECOUT+-6CH2CHVIDEO 4 INPUTKnob(K27-2248-04)AC power cord*(E30-)AC outlet*(E03-)Phono jack (E63-1008-05)Phono jack (E63-1028-05)Lock terminal board(E70-0052-05)Miniature

4、Phone jack (E11-0374-05)Phono jack(E63-1030-05)Panel(A60-1580-12)Knob (K29-6858-12)Knob (K29-6855-03)Led holder(J19-5876-04)Knob (K29-6855-03)Knob (K29-6852-04)Phono jack(E63-0200-05)Phono jack(E63-0136-15)x2Phono jack(E63-0139-15)x2Slide switch(S62-0034-05)Front glass (B10-2418-03)Indicator(B12-032

5、6-04)Front glass (B10-3455-03)Screw terminal board(E70-0095-05)Screw terminal board(E70-0096-05)*Refer to parts list on page52.This manual is available for repair in the Europe and England markets. Please refer to the original manual (B51-5426-00) if need the information in the USA and Canada and ot

6、her markets.Cylindrical receptacle(E56-0011-05)x2Phono jack(E63-0162-05)x2Power cord bushing(J42-0083-05)Miniature phone jack (E11-0360-05)Phono jack (E63-1077-05)Cylindrical receptacle(E56-0012-05)Phone jack(E11-0271-05)Indicator (B12-0333-04)Optical receiving module(W02-1181-05)RadioFans.CN 收音机爱 好

7、者资料库KRF-V7771D/V7771DE2CONTENTS / ACCESSORIES / CAUTIONSCONTENTS / ACCESSORIES / CAUTIONS.2CONTROLS .3DISASSEMBLY FOR REPAIR.5BLOCK DIAGRAM .6CIRCUIT DESCRIPTION.7ADJUSTMENT. 13WIRING DIAGRAM.14PC BOARD .15SCHEMATIC DIAGRAM .23EXPLODED VIEW .51PARTS LIST.52SPECIFICATIONS .67ContentsFM (T90-0836-05)

8、indoor antenna (1)Remote (A70-1269-05)(RC-R0807)Battery cover(A09-1115-08)control unit (1)Loop antenna stand (1)Batteries(R6/AA) (4)AM loop antenna (1) (T90-0833-05)(J19-3645-05)How to reset the microcomputerThe microcomputer may malfunction (impossibility of operation,erroneous display, etc.) when

9、the power cord is unplugged andplugged in again while the unit is in ON mode or due to otherexternal causes. In this case, execute the procedure on the right toreset the microcomputer and return the unit to the normal condi-tion.?Resetting the microcomputer clears the memory you entered andreturns i

10、t to the initial condition when the unit left the factory.1With the power cord plugged in, turn the POWER key toOFF.2While holding down the (ON/STANDBY) key, pressthe POWER key.Please note that the following items will be deleted fromthis units memory if the power cord is disconnectedfrom the AC out

11、let for approximately three days.Memory backup function?The frequency setting is cleared and 87.5 MHz is selected.?The preset station memory is cleared.?The surround setting is cleared and reset to the initial condition.?The input selection is cleared and the “Tuner” input is selected.?The volume se

12、tting is cleared and the volume is set to “-66 dB”.?The receiving band setting is cleared and the “FM” band isselected.AccessoriesCautionsRadioFans.CN 收音机爱 好者资料库KRF-V7771D/V7771DE3CONTROLSPHONESINPUT SELECTORVOLUMEMPEGCinema Re-EQDOLBY DIGITALCLIP INDICATORPOWERON/STANDBYABSPEAKERSMUTEDOWNUPDISPLAY

13、MODES VIDEOVL-AUDIO-RCD2 / TAPE2MONITORON OFFAV AUX2 37546 #%$&9801ST.ST.TUNEDMUTETUNEDMUTE!Standby mode1POWER keyPress to switch the main power ON and OFF.2ON/STANDBY ()keyPress to switch the power mode betweenSTANDBY and ON.3Standby indicatorLights in standby mode.4Remote sensorReceives signals tr

14、ansmitted from the re-mote control unit.5PHONES jackUse for listening to audio through headphones.6SPEAKERS keysPress each key to switch the SPEAKERS A orSPEAKERS B ON and OFF.7IndicatorsCLIP INDICATOR :Lights when the input is clipped duringanalog to digital signal conversion.DOLBY DIGITAL :Lights

15、when Dolby Digital is activated.Stereo indicatorMUTE indicatorTUNED indicatorMulti-mode displayWhile the standby indicator of the unit is lit, a small amount of current is flowing into the units internal circuitry to back up the memory. Thiscondition is referred to as the standby mode of the unit. W

16、hile the unit is in the standby mode, it can be turned ON from the remote control unit.DisplayMPEG :Lights when the MPEG is activated.Cinema Re-EQ :Lights when the Re-EQ is activated.8MUTE keyPress to mute the audio temporarily.9Remote transmitterSends signals to the remote control unit.0Communicati

17、on indicatorLights when signal is input from or output tothe remote control unit.!VOLUME control knobRotate to adjust the volume.S VIDEO input jack (AV AUX)Connect the S VIDEO output jack of an AVcomponent.#VIDEO input jack (AV AUX)Connect the composite video output (RCA)jack of an AV component.$AUD

18、IO (L, R) input jacks (AV AUX)Connect the audio output (RCA) jacks of an AVcomponent.%CD2/TAPE2 MONITOR indicatorLights when the CD2/Tape2 (Monitor) input isused.DISPLAY MODE keyPress to switch the display on the receiver.Press for more than 2 seconds to switch therecording mode.&INPUT SELECTOR keyP

19、ress to switch the input as shown below.TUNERCD1MD/Tape1VIDEO1VIDEO2VIDEO3VIDEO4AV AUXPHONOKRF-V7771D/V7771DE4CONTROLSPerform “Model Type Setup”of the remote control beforeusing it.The following menu display ap-pears after the batteries areloaded for the first time.ON/STANDBYMUTEVOLUMEENTERSetup Sur

20、roundSP LevelSP DistanceSP SelectionTunerCD1Video2Video3Video4Video1TV1PhonoTV2CD2MD/Tape1CD2/Tape2InputDigitalInputAnalogAV AUXMacroRemoteModeMainMenuCONFIRM1234567890NoteNoteNote1Segment screenThe fixed icons are displayed in this area.?Main Menu icon : Select to display the Main Menu screen.?Phon

21、o icon?CD 1 icon?Tuner icon?MD/Tape 1 icon?CD 2/Tape 2 icon?Video 1 icon?Video 2 icon?Video 3 icon?Video 4 icon?AV AUX icon?TV 1 icon?TV 2 icon?Macro icon : Select to control macro operation.?Input Digital icon : Select to play a digital input.?Input Analog icon : Select to play an analog input.?Rem

22、ote Mode icon : Select to switch the remote control operation mode without changing the selected input.Select to switch input and control the se-lected input. ( Phono and AV AUX : Inputselection only ) Select to control TV.2Menu screenControl key icons and control levels are displayed in this area.3

23、Communication status displayShows the communication status.4Joy stickThis key is used to select an icon. This key can be controlled in4 directions.5ENTER keyPress to enter the selection of an icon.6VOLUME (up, down) keyPress to control the volume.7CONFIRM keyPress to confirm the currently selected i

24、tems.8MUTE keyPress to mute the audio temporarily.9(ON/STANDBY) keyPress to turn the receiver and the components connected to itthrough system cords between ON and STANDBY modes.0Return ( )iconSelect to return to the previous menu screen.Model Type SetupModel 2Model 1KRF-V7771D/V7771DE5DISASSEMBLY F

25、OR REPAIR663449933211121435x29x58x23x271313131414151012221x32x322x2x52x22333313x29Remove the bottom plate.Make use of the changing final transistor etc.1. Remove the 19 screws (1, 2) and PCB support, thenremove the bottom plate.Check the vertical PCB1. (Exist bottom plate) Remove the hook of rearpan

26、el(1).2. Remove the 29(Exist bottom plate: 34)screws(2), then remove the rear panel.3. Connect the GND of the phono terminal, theGND of antenna shield board,the GND ofcoax., the GND of system control shieldboard, the GND of SP terminal shield boardand the chassis with 5 wires connected alli-gator ch

27、ips(3).Remove the escutcheon (operationpanel)1. Remove the knob(1), the nut (2), the 11screws(3, 4, 5) and 2 hooks (6), thenremove the front panel assy.2. Remove the lead wire(7), the 2 screws(8 :except K,P type) and 7 screws(9) thenremove the PCB.3. Remove the under front glass(0, -), thenremove th

28、e front panel(=) from the subpanel.4. Remove the 2 under escutcheon sides() by screw driver and the 2 hooks(!) thenremove the escutcheon().Fig. 3Fig. 1Fig. 2VIDEO 1AV AUX(FRONT)VIDEO 4VIDEO 3VIDEO 2VIDEO 1COMPVIDEOPLAYCOMPRECVIDEOQ52SN761200NIC51IC52(2/2)OUTQ55(OSD)1Vp-p/75(VISUAL)VIDEO 1VIDEO 2VIDE

29、O 3VIDEO 4(FRONT)AV AUXRECPLAY(S1-VIDEO)1Vp-p/75MONITOR OUTQ15Q31Q16Q30Q12VIDEO 1Q14SN761200Nx2IC11,12CD1VIDEO1VIDEO2VIDEO3VIDEO4MD/TAPE1VIDEO1VIDEO2TAPE2VIDEO3VIDEO2VIDEO4AVRIC31+5.6VGNDD301-304FINAL TR.FINAL TR.GNDPRE DRIVEGNDPRE DRIVED251D252Q154RELAYDRIVER-17VGND+17VD81Q84AVRQ83AVRQ86AVRQ85AVRTo

30、 VIDEOTo VIDEO+5.0VGNDIC84AVRD88Q311AVR-35VFILFILSTROKE SWK6Q301RELAYDRIVERAC OUTLETD312K5T1D86IC83AVRIC82AVRAVRIC6,33-35+30VGNDD82CD1L8R7R8L7L6,L7L3,L5L2,L4L1,R8L1MONITORL4MD/TAPE1L2R1,R7R2,R4R3,R5L8,R6R2R4R1R3L3IC3BUFFERREC OUTL7,R7L5,R5L3,R3R5INL4,R4LINEBUFFERIC21(1/2)TUNER2.5mV/PHONOIC27IC1(2/2)

31、, IC2(2/2)IC4IC1(1/2), IC2(1/2)IC23IC1EQ(ANALOG)L2,R2L1,R1INPUT ATTIC21(2/2)IC49BUFFERBUFFERDOLBY DIG.PROLOGICCONVERTERFORMAT5VCS4226DIR AD/DAIC25IC30IC31IC2821kHz LPF21kHz LPF21kHz LPF21kHz LPFIC50IC52(2/2)IC54IC52(1/2)SUBCENTERLS,RS,FL,FRINVIC49CONFIG-2IC47,48LOW BOOSTDIRECTL2,R2L3,R3L1,R1L6,R6TON

32、EIC43IC44L4,R4L8,R8L7,R7VOLUMEVOLUMEVOLUMEVOLUMEIC21IC25(1/2)IC23IC25(2/2)IC51(1/2)IC53IC52(2/2)IC53Q10Q9-20dBQ5,6Q1,2ATT-20dBATT-20dBATT-20dBATT(1/2)IC26(2/2)IC24IC26IC22AMPBUFFERQ12Q7,8Q11Q3,4MUTEMUTEMUTEMUTE-20dB ATTA-MUTESW-MUTEMUTEQ35,4745,46MUTEQ36,48MUTE43,44MUTEK3K4K1(X25)(X07)29dB POWERAMPL

33、IFIER(X25)(X07)29dB POWER(X25)(X07)29dB POWERK2BUFFERIC31(1/2)IC30BUFFERIC31(2/2)BUFFERRELAY ARELAY CSRELAY BA-MUTES-MUTESW-MUTEFRONTSWSL,SRCL,RFRONT BSL,SRCPHONESL,RFRONT ASPEAKERSPRE OUTPRE OUT1.0V/500LEDPEAK LEVELLED(X25) IC61FL DRIVER(X25) ED1FLKEY MATRIX(X25) A1REMOTE SENSORSUB u-COMDATA-OUTMAI

34、N u-COM(X08) IC3(X08) IC1RDSu-COMREMOTE(X08) IC4(X11) D21-24IR LED REMOTE OUTSIRIAL/PARALEL(X07) Q211-215FAN DRIVERFAN7(X08)IC5PROTECTIONTONE CONT.VIDEO SYNCWIDE V-MUTEDIGITAL INPUT SEL.VIDEO SEL.FANRELAY8443TUNER925(A,B,CS,TR,POWER)TUNERDAC/ADC10DATA-INSL16 TEXT(X08) J1(X08) J2SYSTEM CONTROL(X08) J

35、3SYSTEM CONTROL200mV/47K200mV/220INOUTOTHERTC9164AF-2TC9163AF-2MAX:1.0VrmsIC42TC9163AF-1TXRXSDATASBUSYCONFIGD/A,A/DRe-EQFAN ON/OFFFAN FRST/SLOWAMPLIFIERAMPLIFIERDIGITAL5ch SP. OUTPUTKRF-V7771D(E,T)IC53(X25)S1CD2/TAPE2PLAYINSWLS.RSC6chINPUTVIDEO4AV AUX IN(FRONT)RECOUTCOAXIALINOPTICALINIC26(AC3) MPEG3

36、.3VCOMFIG.Re-EQIC22ROMIC291MDRAMIC21Q49,50MUTEQ48MUTEQ47MUTEQ45,46MUTEIC51(2/2)IC55(1/2)IC53IC53L8L3,R1L6L1,R3L5L7(1/2)IC19IC20IC19(2/2)L,RIC29BUFFERDIR+3.3VIC37AVR4.7KPHONOQ31,32,20.0V/4A2A1L5IC18Q33,34,MONITORSUB MUTEV-MUTEYCCYYCCYCYV-MUTEYCCY+SE-RLY+POWER-RLYTou-COMToPOWERANALOGToSUB-uCOMDSPTUNER

37、MPEG ROMDOLBY DIG.To FAN+STBCLKDATADATACLKCDOUTCCLK CS CDIN .FREQ1.ERR.AC-3.FREQO.PDN.AUDIOSCK/SCLRESETSSMOSGPI02GPI00HREQMISO/SDAHREQMOSRESETGPI00HREQMISO/SDASCK/SCLSS75156DATA OUTCLKDATA IN.RESET.STB1365MISO/SDASREQMDTMREQMCKSDTRESETKRF-V7771D(E,T)(X25)(X11)(X11)(X08)(X25)(X25)(X07)(X25)(X25)(X07)

38、KRF-V7771DE(E2)(X08-)(X08)(SIGNAL STAGE)(u-COM STAGE)KRF-V7771D/V7771DE6BLOCK DIAGRAM7KRF-V7771D/V7771DECIRCUIT DESCRIPTION(0 : Pull down, 1 : Pull up)TYPEBANDReception frequencyChannelIFPLL standardDiode swspace frequencyDSW3DSW2DSW1DSW0K1FM87.5MHz108.0MHz100kHz+10.7MHz25kHz00001700AM530kHz1700kHz1

39、0kHz+450kHz10kHzK2FM87.5MHz108.0MHz100kHz+10.7MHz25kHz00011610AM530kHz1610kHz10kHz+450kHz10kHzK4FM87.5MHz108.0MHz100kHz+10.7MHz25kHz10101700 RBDSAM530kHz1700kHz10kHz+450kHz10kHzE1FM87.5MHz108.0MHz50kHz+10.7MHz25kHz0011AM531kHz1602kHz9kHz+450kHz9kHzE3FM87.5MHz108.0MHz50kHz+10.7MHz25kHzRDSAM531kHz1602

40、kHz9kHz+450kHz9kHz0101FM L65.0MHz74.0MHz10kHz+10.7MHz5kHzQ1FM H87.5MHz108.0MHz50kHz+10.7MHz5kHz1011RDSAM531kHz1602kHz9kHz+450kHz9kHzMK2/E1 is switched with only the setting of DSW1 (X11 : S601).00X1(DSW1 = 0 : K2 type, 1 : E1 type)777675741. The back up item and initializationcondition1-1 Back up PO

41、WER ON/OFF: OFF VOLUME LEVEL: -66dB AUDIO INPUT SELECTOR: TUNER VIDEO INPUT SELECTOR: VIDEO1 SPEAKER A: ON SPEAKER B: OFF CD2/TAPE2 MONITOR: TAPE2 OFF TONE: OFF LOUDNESS: OFF DISPLAY MODE: DEVICE+DGTL/ANLG RDS DISPLAY MODE: FREQUENCY DIMMER: DIMMER 1 (LIGHTEST) SURROUND MODE: STEREO Re-EQ: OFF DSP M

42、ODE: ARENA WALL TYPE: Med EFFECT LEVEL: 3 MIDNIGHT MODE: OFF DISTANCE: FL/FR : 10ft (3m): C : 10ft (3m): RS/LS : 5ft (1.5m): SW : 10ft (3m) FRONT SP.: LARGE CENTER SP.: NORMAL SURROUND SP.: NORMAL/WIRED SUB WOOFER: ON SW Re-Mix: OFF INPUT LEVEL: 0dB CH. LEVEL: 0dB BASS PEAK LEVEL: OFF TONE BASS: 0dB

43、 TONE TREBLE: 0dB TUNING MODE: AUTO PRESET MEMORY: TEST MEMORYFREQUENCY (Same value with KR-V999D/1090VR) LAST BAND: FM FM LAST FREQUENCY: 87.5MHz AM LAST FREQUENCY: 531kHz (CH. SP 9kHz): 530kHz (CH. SP 10kHz) LAST P. ch: - -ch PTY SELECT MODE: OFF PTY SEARCH MODE: OFF TP SEARCH MODE: OFF RDS DISPLA

44、Y MODE: FREQUENCY MODE1-2 The initial settingWhile pressing POWER key, plug the AC power cord intoan AC outlet (K,P type) or turn on the AC POWERswitch.2. Condition by the destination or model3. TEST MODEsetting methodWhile pressing INPUT SELECTOR key, plug the ACpower cord into an AC outlet (K, P t

45、ype) or turn on theAC POWER switch with condition VIDEO4 SW(2ch) onthe rear panel. When a set is set up in test modecondition a set becomes the following condition.Automatic POWER ON. All indicator tube (FL) and CLIPINDICATOR LED are lighted. The other LED are flashed.A backup at the thing except ON

46、/OFF of POWER isinitialized.cancel methodThe power supply is turned off.?8KRF-V7771D/V7771DECIRCUIT DESCRIPTION(X25) IC53MAIN u-COMuPD78078GF-086V-SEL CONT.FAN-MNJU3713DSEL_DATA, SEL_CLK,VIDEO_STB(X11) IC1,2,4,42(X25) IC23SEL IC1/2TC91629164SEL_DATA, SEL_CLK,SEL_STB1, SEL_STB2(X11) IC21,23,25VOLUME

47、ICTC9412/9413APVOL_DATA, VOL_CLK,VOL_CE1(X11) IC44TONE ICTC9184APVOL_DATA, VOL_CLK,VOL_CE2(X25) A1REMOCONREMOCON_IN1 (FRONT PANEL)(X08)IC1TUNER/RDSTDA7479DRDS_DAT, RDS_CLK,RDS_SLEVEL, T_MUTE,SD, STEREO(X11)IC602TUNER PLL ICLC72131PLL_CLK, PLL_DATA,PLL_CE, PLL_DOMEGA CHANGER(CD-0000M)UART_RXD, UART_T

48、XD,(X08) IC5SUB u-COMuPD78056GCSUB_RESET, SDT, MOT,MCK, MREQ, SREQ(X25) IC61FL DRIVERuPD780204FL_DOUT, FL_DIN,FL_CLK, FL_STB,DPU_RSTSERIALSDATA, SBUSY(X07) K16(X25) K1RELAYRELAY_A, RELAY_B,RELAY_CS, RELAY_TR,RELAY_POWER, EXT_OUTRELAY_MULTIDESTINATION999_888, 8_16, TSW_B,TSW_1, TSW_2,TSW_3 (CH, SP)(X

49、11) S1ENCODERENC_VOL1, ENC_VOL2(X08) IC4REMOCON COMMUNICATION ICSMK_REQ, SMK_ENB, SMK_RWR, SMK_D0,SMK_D1, SMK_D2, SMK_D3, SMK_D4, SMK_D5,SMK_D6, SMK_D7MUTEMUTE_A, MUTE_B,SW_MUTE, -20dB_ATT,VIDEO_MUTE, SCH_MUTE(X25) IC 90(X08) IC3PERFECT MACROPOWER DETECTTU_PDET, U_PDET,USEL_CTLA, USEL_CTLBUSEL_TRPus

50、h keyINPUT SELECTORSP ASP BMUTEDISPLAY MODETUNERSTEREOP. CALLUPP. CALLDOWNATTOFF ON FMAUTO/STEREO MANUAL/MONO(DOLBY DIGITAL LED : OFF ON)CD1STEREOTONE (TUNED)+10 (light on) OFF (light off)MD/TAPE1STEREOVIDEO1PRO LOGICVIDEO23 STEREOFLDISPLAYVIDEO3PRO LOGIC+Re-EQVIDEO4DSPARENA JAZZ CLUBTHEATERAV AUXST