Kenwood-KRFX7775D-avr-sm 维修电路原理图.pdf

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1、PHONESTHXDOLBY DIGITALDTSMPEGD.R.I.V.E.HDCD INPUT SELECTOR VOLUME CONTROLDOWNUPAV - AUXS VIDEOVIDEOL - AUDIO - RCLIPINDICATORON/STANDBY REMOTE POWERCD 2 / TAPE 2MONITORSURROUNDBACK96kfsSTANDBYDISCRETE 6.1MATRIX 6.1NEO : 6PRO LOGICDTS-ESOPTICALVIDEO4VIDEO3VIDEO2CD-RMD/TAPE1CD1DVDEXT.CONTROLRS-232CDIG

2、ITAL INCOAXIALDIGITAL OUTVIDEO3 INCOMPONENT VIDEODVDINMONITOROUTMONITOROUTPLAYINPLAYINPLAYINPLAYINRECOUTRECOUTPLAYINS VIDEOVIDEOPRE OUTZONE B PRE OUTRLAUDIORLFRONTRLSURROUNDRLRLSURROUND BACKSUB WOOFERCENTERVIDEORLBAAUDIOVIDEO1VIDEO2VIDEO3VIDEO4DVDFRONTDVD/6CH.INPUTSURROUNDCENTERSUBWOOFERPHONOCD1RECO

3、UTPLAYINMD/TAPE1RECOUTPLAYINCD-RRECOUTPLAYINCD2/TAPE2MONITORCENTERSPEAKER(616)SURROUNDSPEAKERS(616)FRONT SPEAKERS(616)ANTENNAGNDAMFM 75SYSTEMCONTROLSL16 TEXTREMOTEIR OUTLCDIR OUT LCDREMOTEIR RECEIVERINIR RECEIVERINIR REPEATER OUT/DVD CONTROLRF REMOTEANTENNACRLRLABDC12V 20mADC12V 20mAPR/CRPB/CBYPR/CR

4、PB/CBYPR/CRPB/CBYAC 120V 60HzSWITCHED TOTAL90W 0.75A MAX.Front glass (B10-3639-02)Knob *(K29-)Panel *(A60-)Phone jack(E11-0190-05)Knob *(K29-)Indicator (B12-0392-14)Knob *(K29-)Cylindrical receptacle(E56-0026-05)Pin jack(E63-1121-05)Pin jack(E63-1128-05)Retangular receptacle(E58-0033-05)Pin jack *(E

5、63-)Oscillating module(W02-2717-05)Indicator (B12-0391-14)Panel *(A29-)Miniature phone jack *(E11-)Miniature phone jack *(E11-)Lock terminal board *(E70-)AC power cord bushing *(J42-)Pin jack *(E63-)x3Pin jack *(E63-)Pin jack *(E63-)x2AC outlet *(E03-)Screw terminal board(E70-0131-05)Pin jack *(E63-

6、)Screw terminal board(E70-0133-15)Miniature phone jack(E11-0347-05)Pin jack *(E63-)x2Pin jack *(E63-)Pin jack *(E63-)Cylindrical receptacle *(E56-)Pin jack *(E63-)Miniature phone jack(E11-0907-05)Pin jack *(E63-)Pin jack *(E63-)Pin jack *(E63-)70%AUDIO VIDEO SURROUND RECEIVER 2001-5/B51-5723-00 (K/K

7、) 3164* Refer to parts list on page 55. KRF-X7775D/X7775D-SSERVICE MANUALVR-5080/5090Illust is KRF-5090.Pin jack *(E63-)AC power cord *(E30-)Cylindrical receptacle *(E56-)Optic receiving module(W02-2716-05)Cylindrical receptacle *(E56-)Miniature phone jack *(E11-)RadioFans.CN 收音机爱 好者资料库KRF-X7775D/X7

8、775D-S/VR-5080/50902CONTENTS / ACCESSORIESCONTENTS / ACCESSORIES . 2DISASSEMBLY FOR REPAIR.3BLOCK DIAGRAM .5ADJUSTMENT.6WIRING DIAGRAM.8PC BOARD . 9SCHEMATIC DIAGRAM . 22EXPLODED VIEW .53PARTS LIST.55SPECIFICATIONS .69ContentsRF REMOTE CONTROL UNITRC-R09102WAY LCD REMOTE CONTROL UNIT+-+-123456789101

9、112+100+100/BatteriesAM Loop Antenna (T90-0852-05)FM Antenna(T90-0855-05)Battery cover(A09-1166-08)Remote control unit(A70-1453-05): RC-R0913.KP1K1P2(A70-1454-05): RC-R0914.M1X1Y1V(A70-1455-05): RC-0915.E1E2AC plug adaptor* Refer to parts list.*. (1)Use to adapt the plug on the power cord to the sha

10、pe of the wall outlet.(Accessory only for regionswhere use is necessary.)(T90-0850-15)U.S.A. onlyAntenna assyAccessoriesManufactured under license from Dolby Laboratories. Dolby , Pro Logic , AC-3 , and the double-D symbol are trademarks of Dolby Laboratories. Confidential Unpub-lished Works. 1992-1

11、997 Dolby Laboratories. All rights reserved.Manufactured under license from Digital Theater Sys-tems, Inc. US Pat. No. 5,451,942 and other world-wide patents issues and pending. DTS and DTS Digital Surround are trademarks of Digital Theater Systems, Inc. 1996 Digital Theater Systems, Inc. All rights

12、 reserved. , HDCD, High Definition Compatible Digital and Pacific Microsonics are either registered trade-marks or trademarks of Pacific Microsonics, Inc. in the United States and/or other countries. HDCD sys-tem manufactured under license from Pacific Micro-sonics, Inc. This product is covered by o

13、ne or more of the following: IN the USA: 5,479,168, 5,638,074, 5,640,161, 5,808,574, 5,838,274, 5,854,600, 5,864,311, 5,872,531, and in Australia: 669114. Other patents pending.TMRadioFans.CN 收音机爱 好者资料库KRF-X7775D/X7775D-S/VR-5080/50903DISASSEMBLY FOR REPAIR2x834561x61CN10X07C/5X25C/11X25B/11CN102CN1

14、6CN103X13A/6CN10110 x2101110 x210 x2789X25B/11X11A/2X05CN1FRAME(A)FRAME(C)FRAME(B)10 x212x212How to Remove the Front Panel 1. How to Remove the Front Panel 1. Remove the screws (1X3) on top of the panel.2. Remove the screws (2X9) located at the the bot-tom of the panel.3. Disconnect the cable (3) an

15、d connectors (4,5)on the X13 A/6.4. Disconnect the connector (6) on the X07 A/5.5. Cut the tie band (7X7) as shown in the figure.6. Remove the screw (8X1) on the X25 F/11.7. Disconnect the connector (9) on the X25G/11.(Except K/P type)8. Remove the hooks (0X2) on the sub panel.9. Remove the front pa

16、nel in the direction of arrow.Disassembling the Rear Panel andHow to Replace the Power Transistor1. Disconnect the CN10 on the X07 C/5.2. Remove all of screws (1X61) and digital caps(2X8) on the rear panel.(The number of screws and caps are vary accord-ing to the models).3. Disconnect the cable CN16

17、 (3) on the X13 A/6.4. Disconnect the flexible cables CN101(4) on theX25 C/11, CN102 (5) and * CN103 (6)on the X25B/11.* (K/P type only).5. Remove the rear panel in the direction of arrow.6. Remove the screw (7), then remove the X25 B/11.7. To remove the tuner unit, disconnect the CN1 (8)and remove

18、a screw (9).8. Remove the screws (0X9) on the frames (A/B/C),push rivet (-) and PC support (=x2)on the X11A/2.HOOKX13(A/6)CN3CN2CN1AC CONNECTOR(EXCEPT K/P)X25(F/11)X25(G/11)X07(A/5)CN8453x31x52x77x4286910 x2KRF-X7775D/X7775D-S/VR-5080/50904DISASSEMBLY FOR REPAIR9. To remove the frame A rearward, cut

19、 the tie bands(X4) on the frames.10. Remove a screw (!), then remove a thermostat.11. Remove the screws (X8), then remove a frame (D),and X07 B/5. 12. To remove a power amplifier unit (X07 A/5), removethe screws (#x4), and a PC support ($x2).13. Set up the X07 A/5 in the direction of arrow as showni

20、n the figure.14. Replace the defective transistor.15x215x215x315X07B/5FRAME(A)FRAME(D)X07A/5X07A/51616161617x21413x4KRF-X7775D/X7775D-S/VR-5080/50905BLOCK DIAGRAMREC OUT SWTAPE2REC BUFFEROUTPUT MUTEONDIG REC200mV36mV200mV200mVINPUT SEL.ZONE ABUFFERDIG REC OUT(0dB or +6dB)OPTICAL OUTCOAXIAL OUTCOAXIA

21、LOPTICALDIGITALINPUT SEL.OPTICALCOAXIALCOAXIALOPTICALOPTICALCOAXIALCOAXIALOPTICALOPTICALCOAXIALCOAXIALOPTICALVIDEO2VIDEO3DVD(6ch IN)VIDEO4CD-RMD/TAPE1CDAV AUX IN200mVINPUT SEL.ZONE BCD2TAPE2 MON12.5mV(38dB)BUFFERLINE(0.-3.-6dB)OFF -3dBON -6dBBUFFERINPUT ATTBUFFER(-6dB)200mVMAX:1.0VrmsFL.FRSUBCENTERS

22、L.SRSBL.SBR(0dB)50kHz LPF1kHz LPF(0dB)(0dB)(0dB)(0dB)50kHz LPF50kHz LPF50kHz LPFSW ONDIGSW OFFDIGANACONFIG-2FILTERONANA TONE OFFTONE(0dB)TONEOFFATT OFFZONE BLINE BUFFERBUFFERBUFFERBUFFER(+15dB)SUB6ch INCENTER6ch IN6ch INSL SR6ch INPUT SEL.SP BCENTERSL.SRSBL,SBRSUB(4.7dB or 14.7dB)(14.5dB)(5.2dB or 1

23、5.2dB)(5.2dB or 15.2dB)(5.2dB or 15.2dB)(5.2dB or 15.2dB)A-10dB GAIN CONT.ZONE BZONE BB SOURCEAMPLIFIER(29dB)AMPLIFIERAMPLIFIER(29dB)(29dB)F/C/SW-MUTESP B/S-MUTEPRE S-MUTEPRE ZB-MUTESUB-MUTERELAY CSRELAY ARELAY BOUTPUT MUTEK5K1K3K4K2YPB/CBPR/CRPB/CBPR/CRY6dB AMP6dB AMP75ohm DRIV.B SOURCEPALNTSC75ohm

24、 DRIV6dB 75ohm DRIV6dB AMP75ohm DRIVNONECRAMPNONECRAMPL601(K/P/J)L603(OTHERS)OUTPUT MUTEL601(K/P/J)L602(OTHERS)AC INRELAY POWERFAST OFFATT ONVIDEO2 RECVIDEO1 RECCD-R RECMD/TAPE1 RECMUTEQ11,12MUTEQ1,2IC4CD2/TAPE2 RECCENTERSUBSL.SRL.RDVD6ch INIC32VIDEO4 INCD1 INCD2/TAPE2 MONICD-R INMD/TAPE1 INIC22VIDE

25、O3 INVIDEO1 INVIDEO2 INFM AMTUNERIC1EQPHONO INIC28IC8.9ADCIC7DIRIC6DSPEP ROMSDRAMSDRAMDACIC31X08IC32X08IC33X08IC34DACDACDACIC11X08IC17IC14X08X08IC20IC12,13IC18,19IC21,22IC15,16IC18,19TONEIC34IC23IC5IC26IC27 (2/2)IC27 (1/2)IC24FL.FRVOLUMEVOLUMECENTERSBL.SBRVOLUMEVOLUMESL.SRSUB WVOLUMEVOLUMEZONE BIC8I

26、C10IC12IC35IC10IC6IC9IC11IC36IC13IC7IC11Q1,2Q101Q51,52Q301-320MUTEPHONESL.RSL.SRCSL.SRCL.RZONE B-SPEAKERSZONE BSWSBL.SBRB-SPEAKERSA-SPEAKERSPRE OUT1VIC23IC24VIDEO3DVDCOMPONENTYCbCrMONITOR OUTX13,IC701-703 or X35,IC1-3AV AUXVIDEO4 VIDEO2VIDEO3VIDEO1IC22IC21DVD/6chDECODER4.43MHz3.58MHzIC5X35MUTEMUTEMU

27、TEMUTEMUTEMUTEMUTEMUTEMUTEMONITORZONE BMUTEMUTEMUTEMONITORZONE AVIDEO2 RECVIDEO1 RECOUTCOMPOSITESEPARATE CDVD/6chVIDEO1VIDEO3VIDEO2VIDEO4 AV AUXIC602VIDEO1 RECVIDEO2 RECMONITORMUTEMUTEMUTEC OUTAV AUXDVD/6chVIDEO4 VIDEO2VIDEO3VIDEO1SEPARATE YIC601Y OUTVIDEO2 RECVIDEO1 RECMUTEMUTEIC604IC606BPFIC603IC6

28、05MUTETRAPMONITORSYSTEM CONTROLSL16 TEXTTV POWER SENSORRELAY COMTROLRS232CRDSTUNERTONE ON/OFFDIG.ANA.SEL.INPUT ATTREC OUT SWANALOG SWZONE A SEL.ZONE B SEL.SUB-MUTEMUTE CONTROLPRE S.SBPRE ZONE BSP SL.SR/BFL.FR.C.SWOUTPUTTONE CONTROLVOLUME CONTROLRELAY ARELAY POWERRELAY BRELAY CSSP RELAY CONT.FLFL DRI

29、VERMAIN u-COMSUB u-CONLED DISPLAYKEY MATRIXRF/IR RECEIVERDOOR MOTOR CONT.FAN DRIVEIR IN/OUT Bu-COMIR IN/OUT AI/V PROTECT DET.THERMAL SENSOROUT POWER DET.IR TRANSMITEP-ROMDACDSP UNITDIRDSPADCVIDEO SELECTORDIG.INPUT SEL.X25,ED1X25,1ICX13,IC3X08,IC43for VIDEO UNIT+6V 1st AVR+6V 1st AVRfor DSP UNITTONE

30、CONTROLVOLUMEANALOG SWfor POWER AMP60V SUPPLY-35V AVRfor FL V-LOADFL FILAMENT-15V 1st AVRfor u-COM+30V forRELAYS & FANBACK UP5.6V AVRIR RECEIVERTHERMAL SENSORu-CON CONTROLX13,Q41X13,Q45X13,Q33,34X07,D100X07,Q407X13,D71X13,Q51X13,IC1POWER SUPPLYOP AMP17V AVRSUB TRANSMAIN TRANSAUDIO SECTIONVIDEO SECTI

31、ON(X08-) , (X25- )(X25- )(X08- )(X07- )(X25- )(X11- )(X13- ) / (X35- )(X11- )(X13- )VR-5080/5090/5700/5900KRF-X7775D/X7775D-S/X9995D/X9995D-SKRF-X7775D/X7775D-S/VR-5080/50906CIRCUIT DESCRIPTION0 : Pull down,1:Pull upSET TYPETYPEBANDRECEIVING FREQUENCY RANGECHANNELSPACEIFPLLK, P, RK11700FM87.5MHz-108

32、.0MHz100kHz+10.7MHz25kHzAM530kHz-1700kHz10kHz+450kHz10kHzY, M, I,C, VK21610FM87.5MHz-108.0MHz100kHz+10.7MHz25kHzAM530kHz-1610kHz10kHz+450kHz10kHzK, PK41700RBDSFM87.5MHz-108.0MHz100kHz+10.7MHz25kHzAM530kHz-1700kHz10kHz+450kHz10kHzY, M, I, C, V, E, X, HE1FM87.5MHz-108.0MHz50kHz+10.7MHz25kHzAM531kHz-16

33、02kHz9kHz+450kHz9kHzE, TE3RDSFM87.5MHz-108.0MHz50kHz+10.7MHz25kHzAM531kHz-1602kHz9kHz+450kHz9kHz1. Initialization1-1 The Initial Setting Insert the power cord to AC wall outlet by pressing the ON/STANDBY key.2. Destination List of Tuner3. Conditions according to the models or destination3-1 Distinct

34、ion of Destination: u-com (X13,IC3) Port 54TypeVoltage : Max 5.0VK200.52K11.612.49K4(RBDS)2.513.39E3(RDS)3.414.45E14.475.00ModelsVoltage : Max 5.0VVR-5080NO00.37VR-5090YES0.391.10VR-5700YES1.121.84VR-5900-SYES1.862.49KRF-X9995D/D-SYES2.513.14KRF-X7775D/D-SYES3.163.88KRF-X9995D-S(M/X TYPE)NO3.904.61K

35、RF-X7775D-S(M/X/V TYPE)NO4.635.003-2 Distinction of Models : u-com (X13,IC3) Port 53 Switching of RF or Front IR and Rear IR Receiver Terminal.P.chK1K2K4E1E31FM 98.3MFM 98.3MFM 98.3MFM 98.3MFM 98.3M2FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M3FM 89.1MFM 89.1MFM 89.1MFM 89.1MFM 89.1M4FM 108.0MFM 108.0MF

36、M 108.0MFM 108.0MFM 108.0M5FM 90.0MFM 90.0MFM 90.0MFM 90.0MFM 90.0M6FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M7FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M8AM 1610KFM 87.5MAM 1610KFM 87.5MFM 87.5M9AM 1700KAM 1610KAM 1700KAM 1602KAM 1602K10AM 1000KAM 1000KAM 1000KAM 999KAM 999K11AM 630KAM 630KAM 630KAM 630

37、KAM 630K12AM 1440KAM 1440KAM 1440KAM 1440KAM 1440K13FM 106.0MFM 106.0MFM 106.0MFM 106.0MFM 106.0M14AM 530KAM 530KAM 530KAM 531KAM 531K15FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M16FM 98.0MFM 98.0MFM 98.0MFM 98.0MFM 98.0M17FM 98.5MFM 98.5MFM 98.5MFM 98.5MFM 98.5M18FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.

38、5M19AM 990KAM 990KAM 990KAM 990KAM 990K20FM 97.4MFM 97.4MFM 97.4MFM 97.7MFM 97.7M4. Tuner Preset MemoryP.chK1K2K4E1E321AM 530KAM 530KAM 530KAM 531KAM 531K22FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M23FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M24FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M25FM 87.5MFM 87.5MFM

39、 87.5MFM 87.5MFM 87.5M26FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M27FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M28FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M29FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M30FM 106.0MFM 106.0MFM 106.0MFM 106.0MFM 106.0M31FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M32FM 87.5MFM 87.5MFM

40、87.5MFM 87.5MFM 87.5M33FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M34FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M35FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M36FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M37FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M38FM 87.5MFM 87.5MFM 87.5MFM 87.5MFM 87.5M39FM 108.0MFM 108.0MFM 108.

41、0MFM 108.0MFM 108.0M40AM 1000KAM 1000KAM 1000KAM 945KAM 945KKRF-X7775D/X7775D-S/VR-5080/50907CIRCUIT DESCRIPTION5.Test Mode5-1 Setting Method of the Test ModeTurn on the power supply while pressing the INPUT SELECTOR DOWN key, to make a set in test mode.5-2 Canceling the Test ModeThe system is initi

42、alized and the test mode is cancelled if unplug the AC power cord from an AC power wall outlet.5-3 Contents of the Test Mode The following operation is available when the FL is all lighting up mode only.KeyOperationDisplaySOUNDSet up the RF frequency to428MHz.RF BANDLISTEN MODESet up the RF frequenc

43、y to422MHz.RF BANDTHXIndicated the tuner destination in the FL.EX. TYPE E1MEMORYChanged the dimmer off/1/2 cyclically.ALL FL Light ON6. Main Microcomputer: uPD784217A516 (X13, IC3)6-1 Main Microcomputer Periphery block diagramX13,IC6X11(IC2/21) LCD Remote Cont. Selector IC Transmitter IC Protection

44、NJU7312AM uPD17215GFX11(IC3/22/24) Selector IC X13,IC5 NJU7313AM SerialParallel FanX07,K6X11,IC23 TC74HC164AF PWR Relay Selector ICX07,K1k4 NJU7311AM SP. RelayX11,IC6 Vol. IC97991,294,9588 TC9459N7882 Mute CircuitX11,IC8X08,IC43 Vol. ICSub u-Com TC9459N 73,74 uPD784224K507X11,IC10 Vol. IC TC9459N 65

45、,66TEXTUARTX11,IC12X13, IC3X25,ED1 Vol. ICX25,J201 FL TC9459N Main Microcomputer36X11,IC35X25,IC1 Vol. IC uPD784217A516 37FL Driver TC9459N uPD780204X11,IC34Power/Input Tone Cont. IC 48,60Down KeyX25 TC9184APPanel Key Model Type5354 DestinationX05-513X, IC2 SW Tuner Unit2580 LC72131 58,59 PanelKRF-X

46、9995DX05-510X, IC225,26,30 REM2 DoorVR-5900 only PLL for Remote93 8,1050ControlLV2105VExcept KRF-X9995D and RotaryVideoX13(IC502,504,505) KRF-X7775D Encoder Selector IC(IC603,604,701703)X25,S19X25,IC401 Relay Cont.RF/IR IN IR ReceiverSWITCH IR SEL.Except KRF-X7775D (M/X/V TYPE) andKRF-X9995D/KRF-X99

47、95D (M/X TYPE)VR-5900 only SL16KRF-X7775D/X7775D-S/VR-5080/50908CIRCUIT DESCRIPTIONPort No.Port NameI/OFunction1REM DAOIR transmitter IC(X13,IC5) control data output.2REM CKOIR transmitter IC(X13,IC5) control clock output.3FL CLKOClock output to FL driver.4FL DINIData input from FL driver.5FL DOUTOD

48、ata output to FL driver.6FL STBOStrobe output to FL driver.7FL RSTOReset output to FL driver.8ENC BIInput port of volume encoder.9VDD-+5V power supply.10ENC AIInput port of volume encoder.11SEL CLKOClock output to selector IC.12SEL DATAOData output to selector IC.1315SEL STB13OStrobe (13) output to

49、selector IC.16TONE CLKOClock output to tone control / selector IC.17TONE DATAOData output to tone control / selector IC.18TONE STBOStrobe output to tone control IC.19VOL CLKOClock output to volume IC.20VOL DATAOData output to volume IC.21VOL STB2OStrobe 2 output to volume IC.22TEST/VPP-Connected to

50、GND.23STEREOITuner stereo signal detection port.24SDITuner SD signal detection port.Clock output to PLL (LC72131) IC.25RF PLL CLKO Clock output to PLL IC (LV2105V) for RF remote controller. Except KRF-X7775D/9995DData output to PLL(LC72131) IC.26RF PLL DATAO Data output to PLL IC (LV2105V) for RF re