Kenwood KRF-V7771D Service Manual

Also see for KRF-V7771D: Instruction manual Instruction manual Setup Instruction manual Service manual

Contents

7 8BLOCK DIAGRAMKRF-V7771D/V8881D/VR-2080/2090 KRF-V7771D/V8881D/VR-2080/2090(X07)(X25)(X08)(X25)(X07)(X25)(X25)VR-2080RESETSDTMCKMREQMDTSREQMISO/SDA767.STB.RESETDATA INCLKDATA OUT65517SSSCK/SCL MISO/SDAHREQGPI00RESETMOSHREQMISO/SDAHREQGPI00GPI02MOSSSRESETSCK/SCL.AUDIO.PDN.FREQO.AC-3.ERR.FREQ1CDINCSCCLKCDOUTCLKDATADATACLKSTB+To FANSRAMDRAMTUNERToDSPToANALOGPOWERTou-COMToPOWER-RLY+++SE-RLY+++YYCCYV-MUTEYCYCCYYCCYV-MUTECS1(X08)(u-COM STAGE)IC53VR-209027.9V/626.8V/624.5V/6VR-2080KRF-V8881DKRF-V7771D5ch SP. OUTPUTVR-2090VR-2090VR-2090AMPLIFIERAMPLIFIERFAN FRST/SLOWFAN ON/OFFDTSAC-3CONFIGSBUSYSDATARXTXVR-2090TC9163AF-1IC42SYSTEM CONTROL(X08) J17SYSTEM CONTROL(X08) J16(X08) J15SL16 TEXTDATA-IN10DAC/ADCTUNER5(A,B,CS,TR,POWER)29TUNER3438RELAYFANVIDEO SEL.DIGITAL INPUT SEL.WIDE V-MUTEVIDEO SYNCTONE CONT.PROTECTION455kHz FILTERVR-2090 (K,P)(X11) J13 (1/2)IR RECEIVER INREPEATER OUT(X11) J14VR-2090 (K,P)IC86(X08)6FANFAN DRIVER(X07) Q211-215PARALELSIRIAL/OUT LED(X11) D21-24IR LED REMOTE OUT(X11) J13 (2/2)(X08) Q64-66(X08) IC67REMOTEu-COMSENSORTV or LIGHTRELAY CONTROL(X11) J12RDS(X08) IC68(X08) IC69MAIN u-COMDATA-OUTSUB u-COMREMOTE SENSOR(X25) A1KEY MATRIXFL(X25) ED1FL DRIVER(X25) IC61LEDPEAK LEVELLED1.0/1KPRE OUTPRE OUTSPEAKERSFRONT AL,RPHONESCSL,SRFRONT BROOM B SPCSL,SRSWSECOUND ROOM PRE OUTB-MUTESW-MUTES-MUTEA-MUTERELAY BRELAY CSRELAY ARELAY SBUFFERIC31(2/2)BUFFERIC30IC31(1/2)BUFFERK229dB POWER(X25)(X07)29dB POWER(X25)(X07)AMPLIFIER29dB POWER(X25)(X07)K1K1K4K3MUTEQ1-4MUTEQ36MUTEQ33,34Q35MUTESW-MUTEB-MUTEA-MUTE-20dB ATTMUTEQ5,6MUTEMUTEMUTEMUTEQ3,4Q11Q7,8Q12BUFFER AMPIC22IC26IC24(2/2)IC26(1/2)ATT-20dBATT-20dBATT-20dBATTQ1,2Q5,6-20dBQ9Q10IC28IC53(2/2)IC52IC53(1/2)IC51ROOM BIC27IC25(2/2)IC23IC25(1/2)IC21VOLUMEVOLUMEVOLUMEVOLUMEVOLUMEL7,R7L8,R8L4,R4IC44IC43TONEL6,R6L1,R1L3,R3L2,R2(X11)LOW BOOSTIC47,48CONFIG-2IC49INVVIDEOSECOND(B)ROOMD82GND+30V63-65,73IC57,61,AVRAVRIC82AVRIC83 D86D311EXCEPT K.PEXCEPT K.P(X07) T1K5D312 AC OUTLETDRIVERRELAYQ301K6STROKE SWFILFIL-35V AVRQ311D88AVRIC84GND+5.0VTo VIDEO 5To VIDEO 5AVRQ85AVRQ86AVRQ83AVRQ84D81+17VGND-17VDRIVERRELAYQ154D252D251PRE DRIVEGNDPRE DRIVEGNDFINAL TR.FINAL TR.D301-304GND+5.6V(X07) IC31AVRQ13VIDEO 2Q14VIDEO 1Q12Q30Q16 Q31Q15MONITOR OUT1Vp-p/75(S1-VIDEO)PLAYRECAV AUX(FRONT)VIDEO 4VIDEO 3VIDEO 2VIDEO 1(VISUAL)1Vp-p/75(OSD)(SECOND ROOM) IC52(1/2)Q17MONITOR OUT BQ55MONITOR OUTIC52(2/2)IC13TC74HC4051APIC51SN761200NQ51Q52VIDEORECCOMPPLAYVIDEOCOMPVIDEO 1VIDEO 2VIDEO 3VIDEO 4(FRONT)AV AUXVIDEO 1VIDEO 2IC11,12SN761200Nx2Q11ΩΩΩΩΩΩw w w . x i a o y u 1 6 3 . c o mQ Q 3 7 6 3 1 5 1 5 0 992894298T E L 1 3 9 4 2 2 9 6 5 1 3 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299