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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
24、TROLJ82TEXTSL16FLED1LEDx7FLMI-COMIC9138kHzFILTER856,857Q851,852,455kHzFILTERQ853-855CONTROLIC72REMOTEMI-COMX8RXBUSYTXDATA,D30D10AVRIC54+3.3VAVRJK,Y,M,X20.0V/424.5V/6K,Y,M,XJ5ch SP. OUTPUTDETECTORS1IC67J1J2-20dB ATTK1V-MUTEYCCYYCCYCYV-MUTEYCCY+SE-RLY+POWER-RLYtou-COMtoPOWERSELECTORtoSRAMCODECVOLUME-3
25、dB 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/VR-30805BLOCK DIAGRAMKRF-V7772D(K) COVER1,1( 99.10.29 10:11 AM yW10KRF-V7772D/VR-308
26、06CIRCUIT DESCRIPTION(0 : Pull down, 1 : Pull up)TYPEBANDReception frequencyChannelIFPLL standardTuner swspacefrequencyTSW3TSW2TSW1TSW0K1FM87.5MHz108.0MHz100kHz+10.7MHz25kHz00001700AM530kHz1700kHz10kHz+450kHz10kHzK2FM87.5MHz108.0MHz100kHz+10.7MHz25kHz00111610AM530kHz1610kHz10kHz+450kHz10kHzK4FM87.5M
27、Hz108.0MHz100kHz+10.7MHz25kHz10101700 RBDSAM530kHz1700kHz10kHz+450kHz10kHzE1FM87.5MHz108.0MHz50kHz+10.7MHz25kHz0001AM531kHz1602kHz9kHz+450kHz9kHzE3FM87.5MHz108.0MHz50kHz+10.7MHz25kHzRDSAM531kHz1602kHz9kHz+450kHz9kHz0101FML65.0MHz74.0MHz10kHz+10.7MHz5kHzQ1FMH87.5MHz108.0MHz50kHz+10.7MHz5kHz1011RDSAM5
28、31kHz1602kHz9kHz+450kHz9kHzMK2/E1 is switched with only the setting of DSW1 (X11 : S601).00X1(DSW1 = 0 : K2 type, 1 : E1 type)101112131. The back up item and initializationcondition1-1 Back up POWER ON/OFF: OFF VOLUME LEVEL: -66dB AUDIO INPUT SELECTOR: TUNER VIDEO INPUT SELECTOR: VIDEO1 SPEAKER A:ON
29、 SPEAKER B:OFF CD2/TAPE2 MONITOR: TAPE2 OFF TONE: OFF LOUDNESS: OFF DISPLAY MODE: DEVICE+DGTL/ANLG DIMMER: DIMMER 1 (LIGHTEST) SURROUND MODE: STEREO ROOM SIZE: Med WALL TYPE: Med EFFECT LEVEL: 3 MIDNIGHT MODE: OFF DISTANCE: FL/FR : 10ft: C : 10ft: RS/LS : 5ft: SW : 10ft FRONT SP.: LARGE CENTER SP.:
30、NORMAL SURROUND SP.: NORMAL/WIRED SUB WOOFER: ON SW Re-Mix: OFF INPUT LEVEL: 0dB CH. LEVEL: 0dB TONE BASS: 0dB TONE TREBLE: 0dB TUNING MODE: AUTO PRESET MEMORY:TEST MEMORY FRE-QUENCY (Same value with KR-V999D/1090VR) LAST BAND: FM FM LAST FREQUENCY: 87.5MHz AM LAST FREQUENCY: 531kHz (CH. SP 9kHz): 5
31、30kHz (CH. SP 10kHz) LAST P. ch: - -ch1-2 The initial settingWhile pressing POWER key, plug the AC power cord intoan AC outlet (K,P type) or turn on the AC POWERswitch.3. TEST MODEsetting methodWhile pressing INPUT SELECTOR key, plug the ACpower cord into an AC outlet (K, P type) or turn on theAC PO
32、WER switch. When a set is set up in test modecondition a set becomes the following condition.Automatic POWER ON. All indicator tube (FL) andCLIP INDICATOR LED are lighted. The other LED areflashed.A backup at the thing except ON/OFF of POWER isinitialized.cancel methodThe power supply is turned off.
33、2. Condition by the destination or modelKRF-V7772D(K) COVER1,1( 99.10.29 10:11 AM yW11KRF-V7772D/VR-30807CIRCUIT DESCRIPTION(X08)IC16(X08)IC15(X08)IC26(X09)IC5(X08)IC36(X09)IC4(X08)IC42(X08)S91-96(X08)S97(X08)IC71(X08)IC3(X08)IC91(X08)IC51(X09)ED1(X09)K2-5(X05)(X08)J81(X08)IC72(X08)(X08)A91(X08)J84M
34、AIN UCOMPD784214GF-527TACTKEYROTARY-ENCODERFLDRIVERuPD780204DESTYINAFLTION SWLCD REMOTETRANSMIT ICVOLUME ICTC9412VOLUME ICTC9412 VOLUME ICTC9412SELECTOR ICTC9162SELECTOR ICNJU7312ALSELECTOR ICNJU7313ALTONE CONTROL ICTC9184CODECCS4226DSPYSS912SP.RELAYMUTETUNER UNITIR RECEIVERDESTINATIONIRREMOTEIR REC
35、EIVERSYSTEMCONTROLuPD172154. Main microprocessor: uPD784214GF-527(X08: IC71)4-1 Microprocessor periphery block diagramPush keyINPUTSELECTORSPASPBMUTEDISPLAY MODETUNERSTEREOP. CALLUPP. CALLDOWNATTOFF ON FMAUTO/STEREO MANUAL/MONO(DOLBY DIGITAL LED : OFF ON)(Press the key for 2 secs)CD1STEREOTONE (TUNE
36、D)+10 (light on) OFF (light off)ANALOG DIGITALMD/TAPE1STEREOIR RECEIVER A(ON) OFFVIDEO1PRO LOGICVIDEO23STEREODISPLAYVIDEO3STEREOVIDEO4DSPARENA JAZZ CLUBTHEATER STADIUMCATHEDRALAV AUXSTEREOTAPE2OFF ONPHONOSTEREOINPUT LEVEL0dB -3dB -6dBKRF-V7772D(K) COVER1,1( 99.10.29 10:11 AM yW14KRF-V7772D/VR-30808C
37、IRCUIT DESCRIPTIONPin No.NameI/OConnectDescription1-8REM_D0-D7OP.D.LCD REMOTE DATA OUT-79VDD-+5V10-13TSW3-0I-TUNER DESTINATION SWITCH3-014ENC_AI-VOLUME ENCODER INPUT A15ENC_BI-VOLUME ENCODER INPUT B16-IP.D.Not used17T_MUTEOP.U.TUNER MUTE18PLL_CLKOP.D.PLL(LC72131) CLOCK19PLL_DATAOP.D.PLL(LC72131) DAT
38、A20PLL_DOIP.D.PLL(LC72131) DO21PLL_CEOP.D.PLL(LC72131) CE22TEST/VPP-GND23PLL_SDIP.U.PLL(LC72131) SD24PLL_STEREOIP.U.PLL(LC72131) STEREO25-28WIDE_V1-4IP.U.VIDEO1-4 S1 WIDE DETECTOR29WIDE_AUXIP.U.AV AUX S1 WIDE DETECTOR30WIDE_OUTOP.D.MONITOR OUT S1 WIDE INPUT31VIDEO_MUTEOP.D.VIDEO MUTE (mute on:H)32TO
39、NE_STOP.D.TONE(TC9184) STROBE33VOL_STOP.D.VOLUME(TC9412) STROBE34VOL_DATAOP.D.VOLUME(TC9412), TONE(TC9184) DATA35VOL_CLKOP.D.VOLUME(TC9412),TONE(TC9184)CLOCK36CEIP.D.CHIP ENABLE37VDD -+5V38X2-12.5MHz39X1I-12.5MHz40VSS-GND41,42XT2,1-Not used43RESETI-RESET44REM0IP.D.REMOTE CONTROLLER SIGNAL INPUT 0 (F
40、RONT PANEL)45REM1IP.D.REMOTE CONTROLLER SIGNAL INPUT 1 (IR RECEIVER)46CODEC_CSIP.D.CODEC(CS4226) CHIP SELECT47CODEC_ERRIP.D.CODEC(CS4226) ERROR DETECT48CODEC_AC3IP.D.CODEC(CS4226) AC-3(DOLBY DIGITAL, DTS, MPEG DETECT49DSP_DTSIP.D.DSP(YSS912) DTS DETECT50DSP_AC3IP.D.DSP(YSS912) AC-3 DETECT51AVDD-+5V5
41、2AVREF0-GND53DATA_DETIP.D.DIR DATA DETECT54CODEC_FREQ1IP.D.CODEC(CS4226) CHANNEL STATUS FREQ. BIT 155CODEC_FREQ0IP.D.CODEC(CS4226) CHANNEL STATUS FREQ. BIT 056,57Not usedI-GND58CODEC_AUDIOIP.D.CODEC(CS4226) non AUDIO DETECT59DSP_NPCMIP.D.DSP(YSS912) non PCM DETECT60DSP_SENCIP.D.DSP(YSS912) SURROUND
42、ENCODE DETECT61AVSS-GND62DSP_CS_AOP.D.DSP(YSS912) CHIP SELECT63DSP_CS_BOP.D.DSP(YSS912) SUB DSP CHIP SELECT64AVREF1-+5V65DSP_SIIP.D.DSP(YSS912), CODEC(CS4226)DATA IN4-2 Pin descriptionKRF-V7772D(K) COVER1,1( 99.10.29 10:11 AM yW15KRF-V7772D/VR-30809CIRCUIT DESCRIPTIONPin No.NameI/OConnectDescription
43、66DSP_SOOP.D.DSP(YSS912), CODEC(CS4226)DATA OUT 67DSP_SCKOP.D.DSP(YSS912), CODEC(CS4226)CLOCK68TEXT_RXIP.D.CD TEXT UART COMMUNICATION DATA IN69TEXT_TXOP.D.CD TEXT UART COMMUNICATION DATA OUT70DSP_ICOP.D.DSP(YSS912) INITIAL CLEAR71FL_RSTOP.D.FL DRIVER(uPD780204) RESET72FL_STBOP.D.FL DRIVER(uPD780204)
44、 STROBE73FL_DIIP.D.FL DRIVER(uPD780204) DATA IN74FL_DOOP.D.FL DRIVER(uPD780204) DATA OUT75FL_CLKOP.D.FL DRIVER(uPD780204) CLOCK768/16I/O-SERIAL XS8/SL16 CHANGEOVER(SL16:L)77S_DATAI/OP.D.SERIAL DATA78S_BUSYIP.D.SERIAL BUSY79SW_MUTEOP.D.SUBWOOFER MUTE80ATT-20dBOP.D.20dB AMP CHANGEOVER (AMP on:H)81SUR_
45、MUTEOP.D.SURROUND ch MUTE82MAIN_MUTEOP.D.MAIN MUTE83,84SP_A,BOP.D.SPEAKER A,B RELAY85SP_CSOP.D.CENTER,SURROUND SPEAKER RELAY86POWEROP.D.POWER RELAY87SECONDOP.D.POWER RELAY 288I_PROTIP.D.PROTECTION CURRENT DETECT89V_PROTIP.D.PROTECTION VOLTAGE DETECT90IR_RCVI-IR RECEIVER DISTINCTION(IR RECEIVER EXIST
46、:H)91SEL_CLKOP.D.SELECTOR(NJU7312,NJU7313,TC9162) CLOCK92SEL_DATAOP.D.SELECTOR(NJU7312,NJU7313,TC9162) DATA93SEL_STOP.D.SELECTOR(NJU7312,NJU7313,TC9162) STROBE94IN_ATT3OP.D.INPUT ATTENUATOR -3dB95IN_ATT6OP.D.INPUT ATTENUATOR -6dB96TAPE2_LEDOP.D.TAPE2 LED97REM_RWRIP.D.LCD REMOTE RWR98REM_ENBIP.D.LCD
47、REMOTE ENABLE99REM_REQOP.D.LCD REMOTE REQUEST100VSS-GNDKRF-V7772D(K) COVER1,1( 99.10.29 10:11 AM yW18TC9162AF(X08:IC15)(1:H , 0:L)PINNo.(L ch)235689PINNo.(R ch)272624232120SWNo. (L.R ch)L1,R1L2,R2L3,R3L4,R4L5,R5L6,R6TONE on10TONE off01SPEAKERS B on10SPEAKERS B off01ANALOGTHROUGH10D/AOUT(LOW BOOSTon *1)01D/AOUT(LOW BOOSToff)001118L7,R7001*1: SW offNJU7313AL(X09:IC4),NJU7312AL(X09:IC5)(
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