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1、MINI HiFi COMPONENT SYSTEMRXD-790/V860/V890SERVICE MANUAL(XD-790/V860/V890) 1997-9/B51-5357-00 (K/K) 15863721O.T.E.DUBBINGREC/ARMDOLBY NRREV. MODEA/B0?PUSHOPEN0?PUSHOPEN0674DISCSKIPDISC SELECTORTIME DISP.OPEN/CLOSEDISC1DISC2DISC3DOWNUPCLASSICEQ.OFFEX.BASSSTEREOSRS 3DPRO LOGICDOLBY3 STEREOMODEINPUTDI
2、SPLAYBEST HITSDEMOAUTO POWERSAVEMIC MIX.MIN. MAX.MIC1MIC2PHONESON/STANDBYAUTOENTERBANDPOPROCKM/RRESETMINI HiFi COMPONENT SYSTEMMULTI CONTROL/VOLUMETUNINGFront glass(B10-2391-02)Panel(A60-1245-11)Knob(K29-6864-03)Knob*(K29-)Knob(K29-6759-12)Front glass(B10-2282-12)Cassette lid(A53-2019-12)Knob(K29-68
3、66-02)Lighting board(B19-1563-13)Knob(K29-6863-03)Knob(K29-6832-13)Phone jack(E11-0280-05)Knob(K29-6832-13)Knob (K29-6865-02)Knob(K29-6832-13)Knob (K29-6865-02)Front glass(B10-2283-12)Cassette lid(A53-2020-12)Knob(K29-6861-04)Illustration is RXD-790.* Refer to parts list on page 62.KENWOOD-Corp. cer
4、tifies this equipment conforms to DHHS Reg-ulations No. 21 CFR 1040. 10, Chapter 1, Subchapter J.DANGER : Laser radiation when open and interlock defeated.AVOID DIRECT EXPOSURE TO BEAM.In compliance with Federal Regulations, following are reproduc-tions of labels on, or inside the product relating t
5、o laser productsafety.RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 2RadioFans.CN 收音机爱 好者资料库RXD-790/V860/V8902CONTENTS / ACCESSORIESContentsAccessoriesRemocon configurationSystem configurationCONTENTS / ACCESSORIES . 2EXTERNAL VIEW.3DISASSEMBLY FOR REPAIR.4BLOCK DIAGRAM .5CIRCUIT DESCRIPTION .6ADJUSTME
6、NT.13WIRING DIAGRAM.17PC BOARD . 19SCHEMATIC DIAGRAM . 31EXPLODED VIEW . 59PARTS LIST.62SPECIFICATIONS.75Please confirm that the following accessories are present.FM indoor antenna .(1)(T90-0801-05) Loop antenna .(1) (T90-0820-05)AM loop antenna stand .(1)(J19-3645-05)Speaker cords . (2)(E30-5120-08
7、)Remote control unit .(1)(A70-1160-05) : RXD-790.RC-790(A70-1161-05) : RXD-V860.RC-V860(A70-1162-05) : RXD-V890.RC-V890Speaker stabilizer.(8)(G11-2345-04)Battery cover (A09-0380-08)Batteries (R6/AA) .(2)AC plug adapter. (1)(E03-0115-05)REMOTE CONTROL UNITN.B.SLEEPINPUTDISC SKIPO.T.E.REPEATRANDOMEDIT
8、P. MODEBANDP. CALLCDTUNINGPTYTAPEA/BTA/NEWS/INFO.RDSDISPLAYEX.BASSSRS 3DAUTOVOLUMEEQ.PTYSEARCH1234567890+10MUTEPART NAMEMODEL NAMEA70-1160-05RXD-790A70-1161-05RXD-V860A70-1162-05RXD-V890SYSTEMMAIN UNITSPEAKERSPEAKERXD-790RXD-790LS-N850CRS-N850XD-V860RXD-V860LS-N850XD-V890RXD-V890LS-N850CRS-N850RXD-7
9、90/V860(k) COVER( 97.11.28 3:55 AM yW 3RadioFans.CN 收音机爱 好者资料库RXD-790/V860/V8903EXTERNAL VIEWANTENNAAMFM300FM75GNDRLAUXINPUTRLAUXOUTPUTSUPERWOOFERPRE OUTFRONTSPEAKERS(6-16)SURROUNDSPEAKERS(8-16)CENTERSPEAKER(8-16)+-AC220-240VAC110-120VRL+-+RL+-+Metallic cabinet(A01-3532-01)Lock terminal board(E70-00
10、57-05)Lock terminal board(E70-0054-05)Lock terminal board *(E70-0057-05)Lock terminal board(E20-0476-05)Phono jack(E63-1001-05)Phono jack(E63-0200-05)Slide switch(S62-0001-05)Power cord bushing(J42-0083-05)AC power cord *(E30-)Illustration is RXD-790.* Refer to parts list on page 62.RXD-790/V860(k)
11、COVER( 97.11.28 3:55 AM yW 6RXD-790/V860/V8904DISASSEMBLY FOR REPAIR# Remove main PCBs, then connect betweenPCB GND and chassis with alligator clip.1. How to remove the main PCB.(1) Remove the 4 screws 1.(2) Remove the 9 screws 2.(3) Lay the rear panel with left side downward on thesmall box .2. How
12、 to remove the front panel.(1) Remove the 3 screws 1.(2) Remove the 5 screws 2.# Remove the deck mechanism only with the fixedframe on the panel.3. How to remove CD mechanism(After remove the front panel)(3) Remove the 5 screws 3, then remove CD mecha-nism(4) with the laid set.(4) Assemble the front
13、 panel then check (+) position.# Connect between video out terminal GND and unitchassis with alligator clip.A111A22222x2x4x3122222x2453x233RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 7(X08)(X09)RXD-790/V860/V890(X32)(X09)(X14)T25-0050(CDM-27)MECHA. A,B(X28)(X05-466) (K,M,X)(X05-475) (V)SUR.20V/8C chS
14、 ch20V/8(X05) (X08)AUDIO OUTOTHER CH24.5V/617.2V/6FRONT2ch5V9VRFD.P.S.SHIGH SPEEDREC SIGNALXLONMDPSPOBL,RLED A,BSOL-MOTOR-MOTOR BMOTOR AP.H A,BVR5,6A PBB R/PIC DATA1E STBIC DATAIC CLKRM:ON/OFFP/RNR:ON/OFFBIAS:ON/OFFB:120/70A:120/70A/BBIAS SW580mV0dBSPB OUTREC INPASSDCLRECPBVR3,4REC OUTBIAS TRAPB PB
15、AMPLEVELVR7,8APBIC2A PB AMP-22dBS60mVB ERASESRCOFFONTAPETUNERCDAUXAM:180mV/3.3kFM:600mV/3.3kTUNER OUTPUTIC4BA3126N70u120uBABPBLEVELVR1,2IC3RXD-790/V890PRE OUTRXD-790/V890RXD-790/V890RXD-V860/V890RchSEL/751Vp-p2V/1kCSSIC10IC7SUR. 2ch200mV/1.1kAUX OUTAUX OUTMUTEATTATTMUTEPAL/NTSCEHPASISMECHA.A,BMUTEAT
16、TIC3(1/2)IC6(1/2)IC6(2/2)IC3(2/2)OUTVIDEOIC5IC4IC8(AC10V)Q13,14D12AVR(W02)CDVIDEOIC7P/CEXPANDERSERE PARA.IC9DACPCMIC14IC10u-COMVIDEO-CDIC5IC2IC1DOLBYLOGICPROE-VOLQ1Q9Q2Q10-+CENTER SPQ1,2Q3,4IC3EXPANDERAVRQ61AVRQ60,63Q56AVRAVRMUTEQ7-10Q10,11IC1 HA12209FMSIC2IC1MAINu-COMA1ED1SENSORREMOTEFL DISPLAYSPEA
17、NAPOWER SUPPLYFINALTR-12VD28D25,26D20-30V12V5.6VIC9ACAMPMAINQ5-16SP.OUTPUTWOOFERSUPERPHONESSURROUNDSP.+-RLSP.MAINRL+-+IC5N.BGE.CANCELVOICEVOL.ELECTRICIC2-4SRS5Vu-COMMOTOR12VDSP5.6VSW1-SW5P/CIC6CONTROLDSP POWERDRIVER MUTERESETIC2CXD2500BQDSP/DACIC1RF AMP/SERVOCXA1782BQLA6537IC9LD SWCONTROLNJU3713DS/P
18、ROTARY MOTOR SPEED CONTROLL.MDRIVERLOADINGROTARYDRIVERR.MTRAVERSE UNITD40-1500STARTLIMIT SWFOCUSTRACKINGCONTROLDRIVER GAINIC34ch BTL DRIVERD.MDRIVERDISC MOTORDRIVERFEED MOTORF.MCOILDRIVERTRACKING COILCOILFOCUS COILDRIVERLDSWQ5LDFECBAIC5BA10393Q3,4Q1,2IC6NJU3714DMS MAIN+5VOUTL1MPXL.P.F.CHANNELOTHERDO
19、LBYQ5CONTROLBIASBEAT CANCELQ7,8OSCBIASAUX INAUX IN200mV/47kMIC1,21.6mV/2.2kMICINPUTSEL.IC1VR1IC8IC7MICECHOMIXINGIC6(2/2)MIC AMPIC6(1/2)BLOCKTUNERRXD-790 (X32) : Refer on page5 (X32) of RXD-500/700 servi manual (B51-5300-05)RXD-V860 (X092) : Refer on page5 (X09) of RXD-500/700 servi manual (B51-5300-
20、05)(X08) : Except RXD-V860RXD-790/V860/V8905BLOCK DIAGRAMRXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 10RXD-790/V860/V8906CIRCUIT DESCRIPTION1. Initialization1-1 Setting of initial conditionsWhile pressing the ENTER key, plug the AC cord into the AC power outlet.1-2 Initializing operation A microcompu
21、ter is initialized for start when the AC power is turned on while pressing the ENTER key. At that time, CDmechanism are also initialized. During the initial operation, the display shows “INITIALIZE” and after that the clock blinks up on display.1-3 Initial items and back up dataITEMS# POWEROFF# VOLU
22、ME15# BALANCECENTERMUTINGOFF# EQOFF# EQ. MANUFLATAMP# EX. BASSON# SRS 3DOFF# INPUT SELTUNER# AUX INPUT0 (-6dB)# REC LEVEL-17N. B.OFFECHONONEOFF# 3D LEVEL0# REF/MANUREF# DEMOON# D-SURROUNDOFFNONE# D-3STEREOOFFNONE# CENTERNORMALNONE# CEN LEVEL0 (-10dB)NONE# SUR LEVEL0 (-10dB)NONEITEMS# BANDFM# LAST fL
23、IMITTUNER# LAST Pch # AUTO/MONOAUTO# PchTEST f# CLOCKAM 12 : 00# PROG ONAM 12 : 00CLOCK# PROG OFFAM 12 : 00TIMER# PRO MODEPLAY# SOURCETUNER# Pch1# EXEOFF# OTTOFFSLEEPOFF# DIRECTIONFORWARD# RVS MODEpDECK# DOLBY NROFFA/BBACTIVE MODESTOPPLAY MODETRACKREPEATOFFCDRANDOMOFFPLAY MODESTOPTIMESINGLE# A/NTSC/
24、PALNONEAUTOVIDEO-CDAUTO PBCNONEONDIGESTNONEOFFMEM STOPNONEOFF1-4 Mechanism initialization1-4-1 CD mechanism Disc unclamps (traverse down) Rotary tray rotates (1/3 rotation) If a mechanism error occurs, “C” is indicated on the display.1-4-2 DECK mechanism When initial condition becomes NG for the thi
25、rd time, decide the error.The error condition is displayed as X on the display.1-4-3 Error displayC ERR or X ERR# back up dataRXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 11RXD-790/V860/V8907CIRCUIT DESCRIPTIONDesti-DSWReceiving frequencyChannelPORTnation3(D23)2(D22) 1(D21) 0(D20)BandrangespaceIFRF47K
26、10000FM87.5MHz108.0MHz100kHz+10.7MHz25kHz0AM530kHz1700kHz10kHz+450kHz10kHz0K20001FM87.5MHz108.0MHz100kHz+10.7MHz25kHz1AM530kHz1610kHz10kHz+450kHz10kHz0E10011FM87.5MHz108.0MHz50kHz+10.7MHz25kHz0AM531kHz1602kHz9kHz+450kHz9kHz05. Test mode5-1 Test mode of the receiver5-1-1 Setting of the test modeWhile
27、 pressing the INPUT key or Band key, plug theAC power cord in AC outlet.5-1-2 Canceling of the test modeUnplug the AC power cord.5-1-3 Condition in test modePOWER ONSELECTOR AUX (in case of INPUT key)TUNER (in case of BAND key)FL, LED All the fluorescent display indicatorsand LEDs light. (The all il
28、luminatedstate is cleared by pressing any mainunit key or remocon key.EX. BASS OFFREC LEVEL All position 0dB (REC 80)5-1-4 Sub clock osculation diagnosisSub clock oscillation be diagnosed OK and NG beforeinput test mode.ERR1 : OSC non activeERR2 : Frequency NG.5-1-5 All RAM clearWhile pressing 3STER
29、EO key or HIT MASTER key,plug the AC power cord into AC power output, the allRAM cleared.5-1-6 Basic operation in test mode.(1) The muting during mode selection is not controlled inthe test mode.(2) The REC out level is fixed to 0dB (MAX).(3) The test mode is cancelled when the AC power isturned OFF
30、.(4) The operation of the keys in the test mode, as follows.5-1-7 The operation of the keys in the test mode.(1) DISP/DEMO keyWhen this key is pressed in the test mode, all the flu-orescent light off and normal display are indicatedcyclically.(2) DISC 13 keysWith the selector on AUX, when the DISC 1
31、3 keysare operated, the 3D level settings can be made asfollows.1 DISC 1 3D ON level -10 (Min)2 DISC 2 3D ON level 0 (Center)3 DISC 3 3D ON level +10 (Max)4. Destination list of tunerDIODE SW : 0 = Without diode (When static, input low)I = With diode (When static, input high)2. KEY MATRIX3. TUNER pr
32、eset frequencyRefer to RXD-500/700 service manual (B51-5300-00), if need TUNER preset frequency K1 and K2.KR0KR1KR2KR341424344KEY197 PINB PACKB PLAYSTEREOF RECKEY296 PINA PACKA PLAYSDR RECKEY3 95 PINPOWERA/B/BEATCINPUTPOPKEY4 94 PINEQ. OFFMANU/REFCLASSICROCKKEY5 93 PINDSW3DSW2DSW1DSW0KEY6 92 PINTEST
33、 (RDS)DSW6DSW5DSW4KEY7 90 PIN (CD)DISC SKIP6 (CD)OPEN/CLOSWKEY8 89 PINTIME DISP4 (CD)7 (CD)DISC3KEY9 88 PIN7 (DECK) (DECK) (DECK) (DECK)KEY10 87 PINOTE (DECK)DUBBINGREC/ARM1 (DECK)KEY11 86 PINDISC1REV MODEDOLBY NRDISC2KEY12 85 PINTUNING UPBANDAUTOBEST/ECHO/AKEY13 84 PINSRS 3D3 STEREOENTERMODE/OTTKEY
34、14 83 PINRESETEX.BASS/PRGDISPLAYSTEREO/BESTKEY15 82 PINTUNING DOWNPRO LOGICNo. of : Port No. of (X14)IC1 u-COM.RXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 14RXD-790/V860/V8908CIRCUIT DESCRIPTIONPLLLC72131EXPANDER ICNJU3711EXPANDER ICNJU3714DCD MECHANISMUNITCDM-27DECK MECHANISMGT-E5000SYSTEM ICHA12209
35、FPARALLEL-SERIALTC74HC166APSELECTORNJU7313SYSTEM ICLC75393EKEYMATRIX13SCAN 4RETURNSPEANABA3834SSTBRECEIVER SECTIONIC_CLK/DATACEPHGRID (10)(X14) IC1(X14) IC2(X32) IC2(X32) IC6(X28) IC1(X28)IC6(X32)IC5(X14) ED1(X09) IC1(X09) IC5(X05) IC2SEGMENT (42)POWERMUTEST. CLEARM 3 8 1 9 9 M F - 0 6 9 F PM 3 8 1
36、9 8 M C A - 8 0 7 F PF I P 1 0 H M W 6 RCD DSPCXD2509QFLMAINu-COM CDDECKEXPANDERSERI PARAEXPANDERSERI PARAPRO LOGICDOLBYC,S VOL.SEL.ST P.LOG. VIDEO CD-COMVIDEO CD(W02-)CD MECHANISM(CDM-27)DAC4ch BTLRF SERVODSP(X32) IC2(X32) IC1(X32) IC24ch BTL(X32) IC3RF SERVO(X32) IC1(X32) IC14(X32) IC10(X32) IC6,7
37、,9,CD/VIDEO CD(X08) IC7(X08) IC4(X08) IC2(X08) IC1DOLBY PROLOGIC(X14) IC5(3) CD STOP keyWith the selector on TUNER, when the CD STOPkey operated, the preset memory can be changedas 10 steps.10 20 30 40 00 ( )(4) AUTO, TUNING UP/DOWNWith the selector on something other than TUNER,the E.Q (Flat, Min,
38、Max) settings can be made bypressing the AUTO key and the tuning UPDOWN keys.AUTO key E.Q FlatTUNING DOWN keyE.Q MinTUNING UP key E.Q Max(5) CD SKIP UP/DOWN keysWith the selector on TUNER, the P. CALL is operat-ed by pressing the skip UP/DOWN keys.SKIP UP key P.CALL upSKIP DOWN key P. CALL down(6) C
39、D OPEN/CLOSE keysWith the selector on TUNER, the channel space(emphasis) settings can be mad cyclically by press-ing the OPEN/CLOSE keys with E1 and K2 version.(7) Other keysDuring the test mode, it can be operated in a specialmanner that is different from an ordinary operationby using the keys on t
40、he main body, specifically asshown in the following table.TAPE KEYINDICATIONOF VOL.VALUEPress mode key in the AUX mode1 time 2 timesBALANCEINPUT LEVELRVS MODE1L-13DOLBY NR44 (MID)CENTER-4A/B86 (MAX)R+2DUBBING-8O.T.E-36. Main microprocessor M38198MCA-807FP (X14: IC1) : RXD-790M38199MF-069FP (X14: IC1
41、) : RXD-V860/V8906-1 Microprocessor periphery block diagramOPERATION KEYDISCRIPTIONCD CENTER LEVEL UPCD 4CENTER LEVEL DOWNTAPE REAR LEVEL UPTAPE 1REAR LEVEL DOWNRXD-790/V890RXD-790RXD-V860RXD-V890CDOCD/VIDEO CDOODOLBY PROLOGICOORXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 15RXD-790/V860/V8909CIRCUIT D
42、ESCRIPTIONPin No.I/ONameDescription1IBP-INSpeana input (A/D convertor input)2ICWRotary encoder input B3ICCWRotary encoder input A4IA-PHA photo sensor input5IB-PHB photo sensor input6IHEAD PHONEHead phone sw inputH : ON L : OFF7ODOLBY STSurround IC(LV1016/LA2786) strobe8I/OSEL STSelector IC(NJU7313)
43、strobe9OIC-DATASelector/PLL/E. Volume/Expander IC (data)10OIC-CLKSelector/PLL/E. Volume/Expander IC (Clock)11OE STExpander IC (NJU3711/NJU3713/NJU3714) strobe12OSANYO CESystem IC(LC75393(/PLL(LC72131)/E. vol(LC7536) CE13IPLL DOPLL data input14ODAC STDAC(PCM1717E) strobe15OC BUSYVCD busy output16OVCD
44、 CLOCKVCD clock17OC DATAVCD data output18IM DATAVCD data input19OCD-CLKCD DSP clock (CXD2509Q)20OSQCKSub cord clock(CXA 1782BQ, CXD2509Q)21OCD-DATACD IC DATA22ISUBQSub code data23OCD-XLATCD latch output (CXA1782BQ, CXD2509Q)24ISENSECD sense input (CXA1782BQ, CXD2509Q)25OPS-LOADParallel serial IC loa
45、dH : ShiftL : Load26IPS-SINParallel serial IC data27OE. VOL ATTE. Vol attenuationH : ONL : OFF28OIC-CLRExpander IC resetH : NormalL : Reset29ICEPower failure inputH : AC ONL : AC OFF30ISCORSub code synchronism signal (CXD2509Q)31OA MUTEMute controlH : OFFL : ON32IREMRemote control input33IPROTECTPro
46、tection inputH : ProtectL : Normal34IM BUSYVCD board u-COM busy input35IRESETResetH : Normal L : Reset 36IXcinTimer clock input/output(32.768kHz)37OXcout38IXinMain clock input/output(8.38MHz)39OXout40Vss(GND)4144IKR0KR3Key return 03H : ON4554O1G10GFL grid 1G10G5573OSEG41SEG23FL segment SEG41SEG23747
47、6OSEG22/BP OUT3SEG20/BP OUT1FL segment SEG22SEG20/band pass control 317781OSEG19SEG15FL segment SEG19SEG1582 90OSEG14 / KEY15/SEG6/KEY7FL segment SEG14SEG6/Key scan KEY15KEY791Vccu-com power supply92 97OSEG5/KEY6/SEG0/KEY1FL segment SEG5SEG0/Key scan KEY6KEY198VeePull down power supply99AVssA/D GND1
48、00VrefA/D reference voltage6-2 Pin descriptionRXD-790/V860(k) COVER( 97.11.28 3:55 AM yW 18RXD-790/V860/V89010CIRCUIT DESCRIPTIONEMPHASICEECHO AECHO BPOWERSRS LED3ST LEDPRO LEDH.TAPDC OFFDOLBYSP RELAYCS RELAYA SOLA CPMB SOLB CPMBEAT CANCELR/PRMUTEA/BBIASNRD-R/PLMUTELDCPMONCD VMUTENTSC/PALBRKMLMFRMRL
49、MRRMFCD MUTEAUTO/MANUALCD RSTUNLOADLOADNCMUTE+3.3CUP SWDN SWLMT SWEMPHADPSSNCNCPAL/NTPS SWST SWNCSIN LOAD CLKLOAD CLKAMLW/SWMONOFMATTIF ONP1P2P3P4P5P6P7P8P9P10P11P12P1P2P3P4P5P6P7P8P9P10P11P12P1P2P3P4P5P6P7P8P9P10P11P12ABCDEFGHABCDEFGHB01B02B03B04101102(X05) IC2(X09) IC5(X08) IC1,2(X08) IC4(X09) IC1
50、(X32) IC14SI(X32) IC6(X32) IC7QH(X32) IC5(X32) IC9(X28) IC6(X14) IC5EX STSEL STDOLBY STDAC STSANYOU CERXD-V860/V890RXD-790/V890IC CLKIC DATACLRSYSTEM ICLC75393EDOLBY ICLV1016LA2786C.S VOL ICLC7536INPUT SEL ICNJU7536DAC ICPCM1717EPARALLEL SERIALPARALLEL SERIALTC74HC166TC74HC166NJU3713NJU3714NJU3714PL
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