Kenwood-KRFV7772D-avr-sm 维修电路原理图.pdf
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1、AUDIO VIDEO SURROUND RECEIVERKRF-V7772DVR-3080SERVICE MANUAL 1999-3/B51-5511-00 (K/K) 1841POWERON/STANDBY CLIP INDICATOR DOLBY DIGITALDTSSPEAKERSABMUTEVOLUMEDOWNUPINPUT SELECTORDISPLAY MODEPHONES S VIDEOV AV AUX L-AUDIO-RCD2/TAPE2MONITORPRE OUTFRONTSURROUNDCENTERSUBWOOFERAMGNDFM75ANTENNAAUDIOPHONOCD
2、1MD/TAPE1RECOUTPLAYINVIDEO1RECOUTPLAYINVIDEO2PLAYINVIDEO3PLAYINVIDEO4PLAYINCD2/TAPE2MONITORRECOUTPLAYINFRONT SPEAKERS(6-16)SURROUND SPEAKERS(6-16)CENTER SPEAKER(6-16) SWITCHEDTOTAL 100W MAX.S VIDEOVIDEOMONITOROUTVIDEO1RECOUTPLAYINVIDEO2PLAYINVIDEO3PLAYINVIDEO4PLAYINDIGITAL INSL16TEXTSYSTEMCONTROLVID
3、EO2OPTICALOPTICAL COAXIALCOAXIALVIDEO3 VIDEO4CD1IR RECEIVERINDC12V 15mAIR REPEATEROUTIR OUTLCDREMOTESL16 XS8Panel *(A60-)Panel escutcheon(B01-0533-21)Knob (K29-6855-03)Indicator (B12-0333-04)Knob (K29-6855-03)Front glass (B10-2418-03)Indicator(B12-0326-04)Front glass (B10-2451-03)Cylindrical recepta
4、cle(E56-0012-05)Foot(J02-1405-03)Phone jack(E11-0271-05)Knob(K29-6858-12)Indicator (B12-0331-04)Knob(K29-6858-12)Knob (K29-6852-04)AC power cord*(E30-)Slide switch(S31-2132-05)Phono jack (E63-1028-05)Cylindrical receptacle(E56-0011-05)Phono jack (E63-0162-05)Phono jack(E63-0141-15)x2Screw terminal b
5、oard(E70-0096-05)*Refer to parts list on page37.Power cord bushing(J42-0083-05)Phono jack (E63-1084-05)Screw terminal board(E70-0095-05)Miniature phone jack (E11-0360-05)Miniature Phone jack (E11-0291-05)Optical receiving module(W02-1181-05)Lock terminal board(E70-0052-05)AC outlet *(E03-)Miniature
6、Phone jack (E11-0389-05)Phono jack(E63-0139-15)Miniature Phone jack (E11-0293-05)Phono jack(E63-1030-05)KRF-V7772D(K) COVER1,1( 99.10.29 10:11 AM yW 2RadioFans.CN 收音机爱 好者资料库PowerPad(A70-1191-05) : RC-R0907Battery cover(A09-1115-08)RemoteENTERVOLUMECONFIRMMUTEON/STANDBYBatteriesAM Loop Antenna (T90-0
7、833-05)AC (E03-0115-05)plug adapterFM (T90-0841-05)AntennaUse to adapt the plug onthepower cord to the shape of thewall outlet.(Present only for regions whereuse is necessary.)AM Antenna BaseKRF-V7772D/VR-30802CONTENTS / ACCESSORIESCONTENTS/ACCESSORIES/CAUTIONS.2CONTROLS .3DISASSEMBLY FOR REPAIR.4BL
8、OCK DIAGRAM .5CIRCUIT DESCRIPTION.6ADJUSTMENT.12WIRING DIAGRAM.13PC BOARD .14SCHEMATIC DIAGRAM .19EXPLODED VIEW .36PARTS LIST.37SPECIFICATIONS .49ContentsAccessoriesRESETResetting ReceiverPowerPadIf you want to reconfigure PowerPad, you can resetit. You do not need to do this unless you experiencea
9、problem.1. Open the cover and remove the batteries, 2. Use a pen or other thin-tipped object to pressthe blue button in the center of the battery case:OPEN3. Reinstall the batteries and follow the instruc-tions in this chapter to set up PowerPad again.If none of the above solutions work, reset the m
10、icro-processor:(For USA and Canada)1. Turn the receiver off.2. Unplug the receiver.3. Plug it back in while pressing and holding the Power button (you may need someone else to help you do this)4. Continue to hold the Power button for more than 1 second.(For Other Countries)1. Turn the receiver off.
11、(The Power button is OFF position.)2. Press ON/STANDBY button while pressing and holding the Power button.3. Continue to hold the Power button for more than 1 second.KRF-V7772D(K) COVER1,1( 99.10.29 10:11 AM yW 3RadioFans.CN 收音机爱 好者资料库KRF-V7772D/VR-30803CONTROLSPOWERON/STANDBY CLIP INDICATOR DOLBY D
12、IGITALDTSSPEAKERSABMUTEVOLUMEDOWNUPINPUT SELECTORDISPLAY MODEPHONES S VIDEOV AV AUX L-AUDIO-RCD2/TAPE2MONITORPOWERON/STANDBYON OFF9.Volume control knob10. Display Mode button 11. Input selector button12. AV AUX S VIDEO jack13. AV AUX composite video jack14. AV AUX audio jacks15. CD2/Tape 2 Monitor i
13、ndicator light1.Power On/Standby button2.Power indicator light3.Display panel4.Speaker selector buttons 5.Headphone jack6.Mute button 7.IR indicator8.IR transmittersExcept for USAand CanadaENTERVOLUMECONFIRMMUTEON/STANDBY1.LCD display screen 2.Joystick 3.Enter button 4.Volume up button 5.Volume down
14、 button 6.Confirm button7.Mute button 8.On/Standby buttonKRF-V7772D(K) COVER1,1( 99.10.29 10:11 AM yW 6663449933211121435x29x58x23x2713131314141510KRF-V7772D/VR-30804DISASSEMBLY FOR REPAIR1456x23x42X09-x3HOOKHOOK146666x232x22x7X08-X08-11444665B sideRemove the escutcheon (operationpanel)1. Remove the
15、 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 the front panel(=) from the subpanel.4. Remove the 2 under e
16、scutcheon sides() by screw driver and the 2 hooks(!) thenremove the escutcheon().Check the audio PCB(X09)1. Remove the 9 screws (1,2,3).2. Remove the 4 hooks(4,5) and remove theaudio PCB(X09),then stand the set with leftside downward.3. Connect between the chassis of the set andthe rear panel with a
17、n alligator clip lead wire(6).Check the B side of the DSP PCB(X08)1. Remove the 11 screws(1,2).2. Remove the X08(C/10)(J/10) (3), thenremove the X08(A/10) (4).3. Solder the pin 1(-17V), the pin 4 (+17V) andthe pin 6(GND) between CN1 on theX08(A/10) and CN2 on the X08(I/10) with 3lead wires (5).4. Co
18、nnect between the each GND of J1, J62,J61, J2 on the X08(A/10)and the rear panelwith 4 alligator clip lead wires (6).Fig. 2Fig. 1Fig. 3KRF-V7772D(K) COVER1,1( 99.10.29 10:11 AM yW 7VIDEO 1AV AUX(FRONT)VIDEO 4VIDEO 3VIDEO 2VIDEO 1COMPVIDEOPLAYCOMPRECVIDEOQ611,612BA7626FIC61Q621,622OUTQ623(OSD)1Vp-p/7
19、5(VISUAL)VIDEO 1VIDEO 2VIDEO 3VIDEO 4(FRONT)AV AUXRECPLAY(S1-VIDEO)1Vp-p/75MONITOR OUTQ643Q653,Q655Q642Q641VIDEO 1Q651,652BA7626FIC65,66CD1VIDEO1VIDEO2VIDEO3VIDEO4MD/TAPE1TAPE2VIDEO1VIDEO3VIDEO2VIDEO4AVRIC8+5.7VGNDD17-20FINAL TR.FINAL TR.GNDPRE DRIVEGNDPRE DRIVED2D1Q100RELAYDRIVER-17VGND+17VD3-6Q2AV
20、RQ1+5.0VGNDQ16AVRD13-16Q7AVR-35VFILFILSTROKE SWQ8RELAYDRIVERAC OUTLETD9K6T1AVRIC5CD1L3,R3L2,R2L1,R1L8,R8L7,R7L6,R6L5,R5L5,R5MONITORL6,R6MD/TAPE1L4,R4L3,R3IC2BUFFERREC OUTL1,R1L8,R8L7,R7INL2,R2LINEBUFFERIC3TUNER2.5mV/PHONOIC6IC5IC4IC1EQ(ANALOG)INPUT ATTIC1BUFFERDACDIRIC321kHz LPF21kHz LPF21kHz LPF21k
21、Hz LPFIC11IC21IC31(1/2)IC31(2/2)SUBCENTERLS,RS,FL,FRCONFIG-2IC12,13FILLTERTONE OFFL7,R7L6,R6L5,R5L2,R2TONEIC41IC42L1,R1L8,R8L3,R3VOLUMEVOLUMEVOLUMEVOLUMEIC16IC26IC36(1/2)IC36(2/2)Q352Q251,252-20dBQ351Q151,152ATT-20dBATT-20dBATT-20dBATTIC37(2/2)(1/2)IC27IC17AMPQ15Q13,14Q11,12MUTEMUTEMUTEA-MUTEMUTEQ25
22、3-256Q353,355MUTEQ354,356MUTEMUTEK5K4K2POWERAMPLIFIERPOWERPOWERK3RELAY ARELAY CSRELAY BA-MUTES-MUTESW-MUTEFRONTSWL,RFRONT BCLS,RSPHONESL,RFRONT ASPEAKERSPRE OUT1.0V/1Ku-COMIC71CONTROLREMOTEA91PROTECTIONS1 DETECTORV MUTESP.RELAYSW MUTES MUTEA MUTE200mV/47K200mV/2.2KINOUTOTHERIC15AMPLIFIERAMPLIFIERDIG
23、ITALPHONES1.3Vrms/32S1CD2/TAPE2PLAYINAV AUX IN(FRONT)RECOUTCOAXIALINOPTICALIN(2/2)IC32L,R+5.7VIC62AVR4.7KPHONOQ153-1561.1Vrms/32A2A1L4,R4MONITORQ3,4Q1,2654IC37CLS,RSA/CCONVERTERCS4226DSPSRAMIC51IC52X51IC56,57-6dBATTIC32(1/2)L4,R4TUNER8AUDIO SEL.3DPS10DIR DAC,ADC9TONE.VOL.320dB ATT36 (J TYPE)OUTIR RE
24、PEATERJ85INIR RECIEVERJ84OUTIR RECIEVERJ83IR LEDREMOTE OUTD571-574SYSTEMJ81SYSTEMCONTROLJ82TEXTSL16FLED1LEDx7FLMI-COMIC9138kHzFILTER856,857Q851,852,455kHzFILTERQ853-855CONTROLIC72REMOTEMI-COMX8RXBUSYTXDATA,D30D10AVRIC54+3.3VAVRJK,Y,M,X20.0V/424.5V/6K,Y,M,XJ5ch SP. OUTPUTDETECTORS1IC67J1J2-20dB ATTK1
25、V-MUTEYCCYYCCYCYV-MUTEYCCY+SE-RLY+POWER-RLYtou-COMtoPOWERSELECTORtoSRAMCODECVOLUME-3dB ATT-6dB ATT-144R141STRSTCKDIDO51tou-COMFLTONETUNERPRE AMPto DSPtotoVIDEOSELECTORu-COMEACHINPUTC-TERMMNALVR-3080(X09)(X08)(X09)(X09)KRF-V7772D(X08)(X05)(X08)(X08)(J TYPE)(X08)(SIGNAL STAGE)(u-COM STAGE)KRF-V7772D/V
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