Kenwood-VR-3080-Service-Manual电路原理图.pdf
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1、AUDIO VIDEO SURROUND RECEIVERKRF-V7772DVR-3080SERVICE MANUAL1999-3/B51-5511-00 (K/K) 1841POWERON/STANDBYCLIP INDICATORDOLBY DIGITALDTSSPEAKERSABMUTEVOLUMEDOWNUPINPUT SELECTORDISPLAY MODEPHONES S VIDEOV AV AUX L-AUDIO-RCD2/TAPE2MONITORPRE OUTFRONTSURROUNDCENTERSUBWOOFERAMGNDFM75ANTENNAAUDIOPHONOCD1MD
2、/TAPE1RECOUTPLAYINVIDEO1RECOUTPLAYINVIDEO2PLAYINVIDEO3PLAYINVIDEO4PLAYINCD2/TAPE2MONITORRECOUTPLAYINFRONT SPEAKERS(6-16)SURROUND SPEAKERS(6-16)CENTERSPEAKER(6-16) SWITCHEDTOTAL 100W MAX.S VIDEOVIDEOMONITOROUTVIDEO1RECOUTPLAYINVIDEO2PLAYINVIDEO3PLAYINVIDEO4PLAYINDIGITAL INSL16TEXTSYSTEMCONTROLVIDEO2O
3、PTICALOPTICALCOAXIALCOAXIALVIDEO3VIDEO4CD1IR RECEIVERINDC12V 15mAIR REPEATEROUTIR OUTLCDREMOTESL16XS8Panel *(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 receptacle(E56
4、-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 board(E7
5、0-0096-05)*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 Phone j
6、ack (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 yW2PowerPad(A70-1191-05) : RC-R0907Battery cover(A09-1115-08)RemoteENTERVOLUMECONFIRMMUTEON/STANDBYBatteriesAM Loop Antenna (T90-0833-05)AC (E03-0115-05)plug ada
7、pterFM (T90-0841-05)AntennaUse to adapt the plug onthepower cord to the shape of thewall outlet.(Present only for regions whereuse is necessary.)AM AntennaBaseKRF-V7772D/VR-30802CONTENTS / ACCESSORIESCONTENTS/ACCESSORIES/CAUTIONS.2CONTROLS.3DISASSEMBLY FOR REPAIR.4BLOCK DIAGRAM.5CIRCUIT DESCRIPTION.
8、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 problem.1.Open the cover and remove th
9、e 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 micro-processor:(For USAand Canada)1. Turn
10、 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. (The Power button is OFFposition.)2. Press
11、 ON/STANDBYbutton 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 yW3KRF-V7772D/VR-30803CONTROLSPOWERON/STANDBYCLIP INDICATORDOLBY DIGITALDTSSPEAKERSABMUTEVOLUMEDOWNUPINPUT SELECTORDISPLAY MODEPHONES S
12、VIDEOV AVAUX L-AUDIO-RCD2/TAPE2MONITORPOWERON/STANDBYON OFF9.Volume control knob10.Display Mode button 11.Input selector button12.AVAUX S VIDEO jack13.AVAUX composite video jack14.AVAUX audio jacks15.CD2/Tape 2 Monitor indicator light1.Power On/Standby button2.Power indicator light3.Display panel4.S
13、peaker 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 button 6.Confirm button7.Mute button 8.On/Standby buttonKRF-V7772D(K) COVER1,1(
14、 99.10.29 10:11 AM yW6663449933211121435x29x58x23x2713131314141510KRF-V7772D/VR-30804DISASSEMBLY FOR REPAIR1456x23x42X09-x3HOOKHOOK146666x232x22x7X08-X08-1 1444665B sideRemove the escutcheon (operationpanel)1. Remove the knob(1), the nut (2), the 11screws(3, 4, 5) and 2 hooks (6), thenremove the fro
15、nt 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 escutcheon sides() byscrew driver and the 2 hooks(!) thenremove the escutcheon().C
16、heck 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 an alligator clip lead wire(6).Check the B side of the DSP PCB(X08)1.Remove the 11 scr
17、ews(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.Connect between the each GND of J1, J62,J61, J2 on the X08(A/10)and the rear panelwith 4 al
18、ligator clip lead wires (6).Fig. 2 Fig. 1Fig. 3KRF-V7772D(K) COVER1,1( 99.10.29 10:11 AM yW7VIDEO 1AV AUX(FRONT)VIDEO 4VIDEO 3VIDEO 2VIDEO 1COMPVIDEOPLAYCOMPRECVIDEOQ611,612BA7626FIC61Q621,622OUTQ623(OSD)1Vp-p/75(VISUAL)VIDEO 1VIDEO 2VIDEO 3VIDEO 4(FRONT)AV AUXRECPLAY(S1-VIDEO)1Vp-p/75MONITOR OUTQ64
19、3Q653,Q655Q642Q641VIDEO 1Q651,652BA7626FIC65,66CD1VIDEO1VIDEO2VIDEO3VIDEO4MD/TAPE1TAPE2VIDEO1VIDEO3VIDEO2VIDEO4AVRIC8+5.7VGNDD17-20FINAL TR.FINAL TR.GNDPRE DRIVEGNDPRE DRIVED2D1Q100RELAYDRIVER-17VGND+17VD3-6Q2AVRQ1+5.0VGNDQ16AVRD13-16Q7AVR-35VFILFILSTROKE SWQ8RELAYDRIVERAC OUTLETD9K6T1AVRIC5CD1L3,R3
20、L2,R2L1,R1L8,R8L7,R7L6,R6L5,R5L5,R5MONITORL6,R6MD/TAPE1L4,R4L3,R3IC2BUFFERREC OUTL1,R1 L8,R8L7,R7INL2,R2LINEBUFFERIC3TUNER2.5mV/PHONOIC6IC5IC4IC1EQ(ANALOG)INPUT ATTIC1BUFFERDACDIRIC3 21kHz LPF21kHz LPF21kHz LPF21kHz LPFIC11IC21IC31(1/2)IC31(2/2)SUBCENTERLS,RS,FL,FRCONFIG-2IC12,13FILLTERTONE OFFL7,R7
21、L6,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-MUTEMUTEQ253-256Q353,355MUTEQ354,356MUTEMUTEK5K4K2POWERAMPLIFIERPOWERPOWERK3RELAYARELAYCSRELAYBA-M
22、UTE S-MUTESW-MUTEFRONTSWL,RFRONT BCLS,RSPHONESL,RFRONT ASPEAKERSPRE OUT1.0V/1Ku-COMIC71CONTROLREMOTEA91PROTECTIONS1 DETECTORV MUTESP.RELAYSW MUTES MUTEA MUTE200mV/47K200mV/2.2KINOUTOTHERIC15AMPLIFIERAMPLIFIERDIGITALPHONES1.3Vrms/32S1CD2/TAPE2PLAYINAV AUX IN(FRONT)RECOUTCOAXIALINOPTICALIN(2/2)IC32L,R
23、+5.7VIC62AVR4.7KPHONOQ153-1561.1Vrms/32A2A1L4,R4MONITORQ3,4Q1,2654IC37CLS,RSA/CCONVERTERCS4226DSPSRAMIC51IC52X51IC56,57-6dBATTIC32(1/2)L4,R4TUNER 8AUDIO SEL. 3DPS 10DIR DAC,ADC 9TONE.VOL. 320dB ATT36 (J TYPE)OUTIR REPEATERJ85INIR RECIEVERJ84OUTIR RECIEVERJ83IR LEDREMOTE OUTD571-574SYSTEMJ81SYSTEMCON
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