Kenwood-LSN302-cs-sm 维修电路原理图.pdf

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1、MINI HiFi COMPONENT SYSTEMRXD-302/302E/352/352E/372SLS-N302/N352SERVICE MANUAL(XD-302/302E/352/352E/372S)* 1999-5/B51-5530-00 (K/K) 2299DISC SKIPDISC 3DISC 2DISC 1INPUTBANDPHONESEX.BASSTUNING MODEMULTI CONTROLMENUSELECTDISPLAYENTERDEMOON/STANDBYTAPE A/BREC/ARMVOLUMEA PLAYREC/PLAYBOPEN/CLOSE button(K

2、29-7646-08)Front window(A29-1071-08)POWER button(K29-7650-08)Knob (JOG)(K29-7658-08)EX. BASS button assy(K29-7642-08)Knob (STOP)(K29-7654-08)Cass window L(B10-3527-08)Cass door L(A53-2158-08)Tuning button assy(K29-7643-08)Headphone jack(E11-0386-08)PLAY button(K29-7656-08)Knob (VOLUME)(K29-7652-08)C

3、D door(A60-1723-08)PLAY PAUSE button(K29-7648-08)DISC button bass assy(K29-7641-08)Cass window R(B10-3528-08)Cass door R(A53-2159-08)KENWOOD-Crop. certifies this equipment conforms to DHHSRegulations No. 21 DFR 1040. 10, Chapter 1, Subchapter J.DANGER : Laser radiation when open and interlock defeat

4、ed.AVOID DIRECT EXPOSURE TO BEAMIllust. is RXD-352M.In compliance with Federal Regulations, following are reproduc-tions of labels on, or inside the product relating to laser productsafety.*Refer to page 2 if you want to know system configuration.Refer to service manual RXD-251/301/301E/301W/351/351

5、E/351W/371S (B51-5454-00), if you require CD MECH-ANISM OPERATION DESCRIPTION in detail.RXD-302(K) COVER1,1( 99.6.18 0:31 PM y W 2RadioFans.CN 收音机爱 好者资料库SYSTEM MAIN UNIT DESTINATION SPEAKERXD-302RXD-302E3LS-N302XD-302E RXD-302EE4LS-N302XD-352RXD-352TEMXYLS-N352XD-352E RXD-352EE2LS-N352XD-372S RXD-37

6、2SM2LS-N352AM(T90-0815-08)loop antenna (1)Remote(A70-1320-08) : RC-352control unit (1)Batteries (R6/AA) (2)FM indoor antenna (1)Europe and U.K.Other countriesAC(E03-0115-05) plug adaptor (1)Use to adapt the plug on the power cordto the shape of the wall outlet.(Accessory only for regions where use i

7、snecessary.)(T90-0847-08): MXYM2(T90-0836-05): TEE2E3E4RXD-302/302E/352/352E/372S2CONTENTS / ACCESSORIES / CAUTIONSCONTENTS / ACCESSORIES / CAUTIONS.2EXTERNAL VIEW.3BLOCK DIAGRAM .4CIRCUIT DESCRIPTION.5ADJUSTMENT. 7PC BOARD .11SCHEMATIC DIAGRAM .15EXPLODED VIEW .29PARTS LIST.32SPECIFICATIONS .Back c

8、overContentsAccessoriesOperation to resetThe microcomputer may fall into malfunction (impossibility to oper-ate, erroneous display, etc.) when the power cord is unpluggedwhile power is ON or due to an external factor. In this case, executethe following procedure to reset the microcomputer and return

9、 it tonormal condition.Press the POWER key while holding the Stop (7) key ofthe CD section pressed, to switch off the power, and thenswitch the power on again after a few seconds. Please note that resetting the microcomputer clears the contentsstored in and returns and to condition when it left the

10、factory.System configurationCautionsRXD-302(K) COVER1,1( 99.6.18 0:31 PM y W 3RadioFans.CN 收音机爱 好者资料库RXD-302/302E/352/352E/372S3EXTERNAL VIEWSlide switch (S62-0083-08)AC power cord(E30-2906-08)Top cabinet(A01-3725-08)Phono jack(E63-1073-08)Lock terminal board(E70-0108-08)Antenna terminal(E70-0070-08

11、)Illust. is RXD-352M.RXD-302(K) COVER1,1( 99.6.18 0:31 PM y W 6RXD-302/302E/352/352E/372S4BLOCK DIAGRAM242313+100K1718281920212151626252324121113141098722435291306100K100K100K100K100K100K100KGG212591120191614+27CDTUNERTAPEA/BPLAYAMP.ALCPLAYR/POSCBIAS(Q213,L201)Q205Q203 Q204Q206Q201Q202TAPE OUTQ403,4

12、04REC BUFFERTAPE OUTREC. OUTREC INDECK A/B SW.B+PRE. SET EQPRE-AMPIC402RL501Q408,409MUTESYSTEMPOWERIC501+Vcc-VccQ501-503DETECTORu-COMSPEAKERPROTECTOR+12V506Q505,MUTEJACKSPEAKERHEADPHONES+5.5VQ706Q707Q705+Vcc(SWITCHED)toXFORMER-35VQ708+12V-VccCN702D709D710Q702FLD DISPLAYIC601u-COMKEYMATRIXCN05-to CD

13、PCBto MAIN PCBRFAMPFILTERRCTUNEAMPMIXIFTCF1BUFFOSCTUNEAMPIFCF2TUNEAM RFAMPRFQ106FM SECTIONQ101PLLu-COMIC201L.P.FAM SECTIONV.T.AM ANTGNDFM ANTOUTMIXBUFFAMPTUNEAMPAM RFTUNEOSCANTRFPLLL.P.FAMPRFIC201u-COMAMPQ106IFTCF1IFFILTERAM SECTIONFM SECTIONCF2OUTRCIC102IC102TUNEFM RFFMOSCQ102IC01 CXA1992BRRF SIGNA

14、L PROCESSING/SERVO AMPPROCESSOR W/DACDIGITAL SIGNALCD POWER DRIVERIC03 BA5936SIC02 CXD2589QXTL0133.86MHzMMOTORDISCMOTORFEEDMTRACKINGFOCUSTRAY MOTORT/T MOTORSW.LIMIT INOUTPUTAUDIOCONTROL SW.S01-04RchLchu-COMAUXBASSMIDDLETREBLEVOLUMESPKR ATTLEFTPRE. SET EQVOLUMEMIDDLETREBLEBASSSUPPLYSPKR ATTLEFTICBUS

15、DECODER+ LATCHESINPUT MULTIPLEXER+GAINVREF0/30 dB2dB STEPLchRchR/P SWITCHINGLchRchREC.AMP.-Vcc 12V+Vcc 12VJK601 AMP.PRE. AMP.IC602SUB WOOFERB +12VFRONT PCBtoMOTOR SOL.7.2MHZ7.2MHZV.TIFTAMIC201FM FRONT-ENDFM RF IC101TUNER PCB UNITCD MECHA. UNITTUNER PCB UNITMAIN PCB/FRONT PCBIC401RXD-302(K) COVER1,1(

16、 99.6.18 0:31 PM y W 7RXD-302/302E/352/352E/372S5CIRCUIT DESCRIPTIONCD MECHA(9140-C1)DECK MECHAIC01IC601IC201RF AMP/SERVO(CXA1992BR)DECK PLAY/REC EQ IC(TA8189N)IC02IC102MAIN U-COMDSP(CXD2589Q)FM/AM/MPX IC(LC1833L)LC867240A-5L36IC03IC103BTL DRIVER(BA5936S)PLL IC(LC72131D)IC801IC401FL CONTROLLER(M6600

17、4SPA)AUDIO CONTROL IC(TDA7439)00.290.610.991.381.822.32.772.771. Main microprocessor LC867240A-5L36(IC601)1-1 Microprocessor periphery block diagram1-2 VOLTAGE KEY/BAND MATRIXRXD-302(K) COVER1,1( 99.6.18 0:31 PM y W 10RXD-302/302E/352/352E/372S6CIRCUIT DESCRIPTIONPin No.NameI/ODescriptionActive1PLL-

18、CEOCE OUTPUT (LC72131)H: DATAL: ADDRESS2XRSTIRESET (CXD2589Q)L: ON3PLL-DOODATA OUTPUT (LC72131)4PLL-DIIPLL DATA INPUT (LC72131)5PLL-CLKOCLK OUTPUT (LC72131)6SOODATA OUTPUT (CXD2589Q)7SQSOISUB CODE INPUT(CXD2589Q)8SQCKOSUB CODE CLOCK OUTPUT (CXD2589Q)9XLATOLATCH OUTPUT (CXD2589Q)10NOT USED11SENS1ISEN

19、S1(CXD2589Q)12RESETIuCOM RESET H: NORMALL: RESET13POWER DOWNIPOWER DOWN INPUTL: POWER DOWN14SENS2ISENS2(CXD2589Q)15VSSGND16,17X1,2Xtal 6.0MHz18VDD1+5V19-21KEY1-3IKEY 1-3 INPUT22VSSGND23L-METER LILEVEL METER L,R24INOT USED25MODE-SWIDECK MODE SWITCH26BANDIBAND SWITCH27SCORISUB-CODE SYNCH DETECT (CXD25

20、89Q)28PROTECIPROTECTION IN H: PROTECT29REMOTEIREMOTE SIGNAL INPUTL: ON30,31ENC A,BIVOLUME ENCODER INPUT A,B32PIC-UPIPICK UP UP SWITCH33PIC-DOWNIPICK UP DOWN SWITCH34DISC-COUNTIDISC COUNTER SWITCH35T.T-SWITURNTABLE SWITCH36TRAY-OPENITRAY OPEN SWITCH37TRAY-CLOSEITRAY CLOSE SWITCH38MOTOR+OT.T./U.D MOTO

21、R +39MOTOR-OT.T./U.D MOTOR -40TRAY-M +OTRAY MOTOR +41TRAY-M -OTRAY MOTOR -42T,T-MSPOTURNTABLE MOTOR SPEED43CD-VDDOCD VDD CONTOROL(BA5936S MUTE)H: CD44-51ONOT USED52LED-STBYOLED STANDBY ON/OFFL: ON53LED-TIMEROLED TIMER ON/OFFL: ON54,55DECK A,B IDECK MECHA MODE SWITCH A,BH: STOPL: PLAY56VDD+5V57VSSGND

22、58,59HALF A,BIDECK MECHA HALF SWITCH A,BL: EXSIT60REC-FEW-SWIREC FEW SWITCHL: HOOK EXSIT1-3 Pin descriptionPin No.NameI/ODescriptionActive61REC-REV-SWIREC REV SWITCHL: HOOK EXSIT62A-PHIA DECK REEL SENSOR63B-PHIB DECK REEL SENSOR64DECK VCCODECK MECHA VCCH: PLAYL: STOP65A SOLOA DECK SOLENOID CONTROLH:

23、 ONL: OFF66B SOL.OB DECK SOLENOID CONTROLH: ONL: OFF67DUBBINGODUBBING CONTROLH: DUBBING L: NORMAL68RECOREC CONTROLH: RECL: OTHER69REC-MUTEOREC MUTEH: OTHERL: REC70BIASOBIAS ON/OFF CHANGEOVER CONTROLH: RECL: OTHER71A/BOA/B DECK MECHA CHANGEOVERH: A DECKL: B DECK72BEET CANCELOREC BEET CANCELH: ONL: OF

24、F73TAPE-MUTEODECK PLAY OUTPUT MUTEH: ONL: OFF74-78NOT USED79SP-RLYOSPEAKER RELAY ON/OFFH: ONL: OFF80NOT USED81MODE-SW4IMODE SWITCH 4 SHORT WAVEH: EXSITL: NONE82VSSGND83,84ENC A,BIJOG ENCODER(MULTI CONTROL) A,BL: ON85FOKIFOCUS OK OUTPUT (CXD2589Q)H: ON86STEREOIFM STEREO INH: MONOL: STEREO87SDAI/OAUDI

25、O CONTROL IC (TDA7439) DATA88SCLOAUDIO CONTROL IC (TDA7439)CLOCK 89VSS2GND90VDD2+5V91NOT USED92MUTEOSYSTEM MUTEH: OFFL: ON93TUNER-MUTEOTUNER MUTEH: ONL: OFF94AUDIO-MUTEOLINE (AUDIO) MUTEH: ONL: OFF95EX.BASSOEX BASS CONTROLH: ONL: OFF96NOT USED97FL-CSOFL CONTROLLER (M66004DP) CSL: ON98FL-RESETIFL CON

26、TROLLER (M66004DP) RESETL: ON99CLOCKOCLOCK OUTPUT (CXD2589Q)1002589Q MUTIMUTING SIGNAL INPUT (CXD2589Q)H: ONRXD-302(K) COVER1,1( 99.6.18 0:31 PM y W 11RXD-302/302E/352/352E/372S7ADJUSTMENTNO.ITEMINPUT SETTINGOUTPUTSETTINGTUNERSETTINGALIGNMENTPOINTSALIGN FORFIG.1AUTO STOPLEVEL(A)98.0 MHz MONO1kHz, 40

27、kHz dev 30dBu (ANT input)AUTO98.0MHzSFR101Adjust SFR101 andstop at the pointwhere FLD801( )goes ON.NO.ITEMINPUT SETTINGOUTPUTSETTINGTUNERSETTINGALIGNMENTPOINTSALIGN FORFIG.1.IF(A)98 MHz,1 kHz MOD 75 KHz (DEV) 60 dBu (ANT INPUT)(B)98MHzT101Maximum output(Minimum distortion2.LOW END TRACKING(A)90MHz,

28、1 kHz MOD 75 kHz (DEV) 35 dBu ( ANT INPUT)(B)90MHzL102Maximum output3.HI END TRACKING(A)106MHz,1 kHz MOD 75 kHz (DEV) 35 dBu (ANT INPUT)(B)106MHzTC101Maximum output4.VTConnect the DC voltage meter to TP2.87.5 MHzL103VT=1.0V0.05V108 MHzCheck theVT=7.0V1.0VNO.ITEMINPUT SETTINGOUTPUTSETTINGTUNERSETTING

29、ALIGNMENTPOINTSALIGN FORFIG.1.LOW END TRACKING(A)600 kHz or 603 kHz1 kHz, 30% MOD 30 dBu (ANT INPUT)(B)600 kHzor603 kHzT103Maximum output2.HIGH END TRACKING(A)1400 kHz or 1404 kHz1 kHz, 30% MOD30 dBu (ANT INPUT)(B)1400 kHzor1404 kHzTC101Maximum output3.VTConnect the DC voltage meter to TP1.531 kHzL1

30、04VT=1.2V0.05V1602 kHzCheck theVT=7.3V1.0VNO.ITEMINPUT SETTINGOUTPUTSETTINGTUNERSETTINGALIGNMENTPOINTSALIGN FORFIG.1.LOW END TRACKING(A)600 kHz or 603 kHz1 kHz, 30% MOD 30 dBu (ANT INPUT)(B)600 kHzor603 kHzT104Maximum output2.HIGH END TRACKING(A)1400 kHz or 1404 kHz1 kHz, 30% MOD30 dBu (ANT INPUT)(B

31、)1400 kHzor1404 kHzTC102Maximum output3.VTConnect the DC voltage meter to TP2.531 kHzL105VT=1.2V0.05V1602 kHzCheck theVT=7.3V1.0VFM SECTION (M2 type)* Europ version no AdjustmentMW SECTION (Except M2 type)MW SECTION (M2 type)FM SECTION (Except M2 type)RXD-302(K) COVER1,1( 99.6.18 0:31 PM y W 14RXD-3

32、02/302E/352/352E/372S8ADJUSTMENTFM 75 AMAMFM 75ANTENNAOthercountriesEuropeand U.K.GND(A)(C)(D)AM-SGFM-MPX-SGFM-MPX-SGPOLAR SGDummy antennaOscilloscopeAC voltmeter(B)Distortion meterTO TUNER UNITCN101, pin 9 (Lch)pin 7 (Rch)pin 8 (GND)NO.ITEMINPUT SETTINGOUTPUTSETTINGTUNERSETTINGALIGNMENTPOINTSALIGN

33、FORFIG.1.LOW END TRACKING5.95 MHz 1 kHz, 30% MOD 30 dBu (ANT INPUT)(D)(B)5.95 MHzL201Maximum output2.HIGH END TRACKING17.9 MHz 1 kHz, 30% MOD 30 dBu (ANT INPUT)(D)(B)17.9 MHzTC201Maximum output3.VTConnect the DC voltage meter to TP2.5.95 MHzL202VT=1.0V0.05V17.9 MHzCheck theVT=8.4V1VNO.ITEMINPUT SETT

34、INGOUTPUTSETTINGTUNERSETTINGALIGNMENTPOINTSALIGN FORFIG.1.LOW END TRACKING162 kHz 1 kHz, 30% MOD 30 dBu (ANT INPUT)(D)(B)162 kHzT105Maximum output2.HIGH END TRACKING270 kHz 1 kHz, 30% MOD 30 dBu (ANT INPUT)(D)(B)270 kHzTC103Maximum output3.VTConnect the DC voltage meter to TP2.153 kHzT106VT=1.0V0.05

35、V279 kHzCheck theVT=5.0V1.0VSW SECTION (M2 type)LW SECTION (T type)INSTRUMENTS CONNECTIONRXD-302(K) COVER1,1( 99.6.18 0:31 PM y W 15RXD-302/302E/352/352E/372S9ADJUSTMENTOscilloscopeFrequency counterAC voltmeterPIN8PIN13Lch: PIN13(LA08)Rch: PIN8(LA06)IC401(A)MAIN UNITNO.ITEM INPUTSETTINGSOUTPUTSETTIN

36、GSCASSETTE TAPE DECK SETTINGSALIGNMENTPOINTALIGN FORFIG.Unless otherwise specified : each ; switch should be set as follows : 0dBs = 0.775VBEAT SW : OFFI. Cassette mechanism section (REC/PB head adjustment)1Demagnetization and cleaningPower OFF, demagnetization, cleaning playREC/PB head, erase head.

37、 capstan, pinch rollerDemagnetize the REC/PB head by head eraser. Clean the REC/PB head, erasehead capstan and pinch roller with a cotton swab immersed in alcohol.2REC/PB head azimuthMTT-114, TCC-153 SCC-1727 10 kHz, -10dB(A)PLAYAzimuth adjustment screwIn a setting wher the outputis maximized, adjus

38、t theazimuth adjustment screw so that the Lissajous figure appearing on the oscilloscope screen comes near to a line slanted45 Note : The head should be installed in such a manner that it approaches the tape face.II. PC board adjustment Tape speedMTT-111TCC-100 SCC-1727 3 kHz, -4 dB(A)PLAYSFR201Adju

39、st so that Frequency is 3 kHz at the center of the tape. Playback levelTCC-120 315 Hz 0dB(A) PLAYApprox. -5dBm reference levelRecording levelPut standard test tape(TCC-120) into B deck. Put standard blank tape into A deck.(A)Dubbing and playback.Approx. -5dBm reference levelCASSETTE DECK SECTIONINST

40、RUMENTS CONNECTIONRXD-302(K) COVER1,1( 99.6.18 0:31 PM y W 18RXD-302/302E/352/352E/372S10ADJUSTMENTFIG.(a)No.ITEMINPUTSETTINGSOUTPUTSETTINGSALIGNMENTPOINTSALIGNFORPLAYERSETTINGS1LASER POWER-Apply the sensor sectionof optical power meteron the pickup lens.-On the power from0.08 to 0.15 mW,when the di

41、ffractiongrating is correctlyaligned with the RFlevel of 0.6 Vp-p ormore.Press thePLAY/PAUSE key.PickupNote:Type 4 disc : SONY YEDS-18 Test Disc or equivalent.(KTD-08)0.080.15 mWOptical power meter(a) Laser powerCD SECTIONRXD-302(K) COVER1,1( 99.6.18 0:31 PM y W 19ACEBD2135746Refer to the schematic

42、diagram for the value of resistors and capacitors.PC BOARD(Component side view)11EBEEBBBBBEEEGDSGDSSGD813B16BBEEE1152411617BE121516TUNER UNITCD UNITRXD-302(K) COVER1,1( 99.6.18 0:32 PM y W 22FGIHJ2135746Refer to the schematic diagram for the value of resistors and capacitors.PC BOARD(Component side

43、view)12EEEEBBEEEEEEBBBBBSS101DDGG12IC102IC103SDGDSGBB19EBEBEBBTUNER UNITRXD-302(K) COVER1,1( 99.6.18 0:32 PM y W 23KMOQSLNPRT21357464115EEAUXE11883311512324B EBBEE21115101101516215211BE110EBEBEEBBE BE BEEEEEBBBEBEBBB1186BBB1EEEEEEEEEEEEEEBBBBBBBBBBBEBBBEBEEEBEBBBEEEBEBBEBEBEBBBPHONESRefer to the sch

44、ematic diagram for the value of resistors and capacitors.PC BOARD(Component side view)MAIN UNIT1314FRONT UNITRXD-302(K) PCBSD2,2( 99.6.18 0:11 PM y W 2ABDFHJCEGI2135746RXD-302/302E/352/352E/372SY39-3522-71123456789101112FMIFAUMTXREGAMIFGNDTULEDSTINDFMDETVCCIFBUFAM/FMST/MO242322212019181716151413OSC/

45、FMSDOSCAFCAMRFSMETAMOUTFMOUTPLLINMPXINPILOTAOUTLOUT2221201918171615141312XOUTVSSAOUTAINPDVDDFMINAMINNCSWB+IFIN1234567891011XINNCCEDICLKDODEMFFMB+FM/AMFMSTSD/IN7IF OUTGNDAFC GNDMIX INBYPASSRF IN312546VCCOSC98T1012136413L101641000PC10122R10318PC105100PC155C100B4700PG23.3PC103TC10110P64123L1021000PC102

46、0.022C1041KR1021000PC119C100A4700PR1111KR109100KL10356PC11133KR110AA_100KR101R1041002.2PC1102.2PC1090.022C106100PC1120.022C10710.7MA56.8KR1072.2KR10610.7MS3330R1080.022C108R118100470R11910.7MG46-A3.3KR1201u50C122+0.47u50C123+20PC1240.047C12610u50C127+C1490.022C12147P245631T10212346C125+1u508.2KR123R

47、1223.3K3.3u50C135+0.022C128100u16C118+0.022C16039R11510KR213R13410R1502.2M470R15110PC116C211 100P+C137 22u506.8KR222R21047KC136 4700PR149100K0.1C209820PC13410987654321MUTELchGNDRchST IND+12VCEDICLKDO314616234560PC201TC10210PL10647mHC1690.0221u50+L108 47mHL107 47mHC152 1500PC151 1500P1u50C161+C131 0.

48、022C130 0.022C1626800P6800P3.3KR1263.3KR129C1331000PR1283.3K0.047C1380.1C215L104L2010.01C1644700PC2022.2MR1553461L105470PC16710PTC201C21810P1KR1531MC1650.147KR1540.1C166C11720P34L2021610R2044.7R2064.7KR15810R1571KR1141KR1130.1C1501KR1451KR161R221R15647KR2034.7K0.022C204220P220P220P3451K1K1K220PC2201

49、0KR219L20547uH47u25C205+C179R217C178R216C177R21810KR212100PC1131000PC2101KR2111000PC147345R2050.022C2160.022C153C140100u16+10KR223R1403.3K12KR220100R1301/2WL20347uHC139 0.0220.01C20847u25C207+10KR214R1311KC142100u16+0.022C14110KR132C21327P0.22C1435.6KR1330.01C144220R1350.022C21720KSFR101CF1031KR1051

50、00R112AFC+B+B+B+B12GNDVTTP20.022C1711KR201R2024.7K4.7KR100L20447mHUU_4.7KR1622.2MR2082.2MR2091/4WC1700.14.7K1/4W+B+B+B+B1/4W7.2MHz27PC214X201+B+B+B+BLWB+1/4W3.3KR1271000PC132C175C17418KR1211u50C129+21IF GNDTP1100R1461000PC1571/4WCF104CANCEL+B+B+B+B+B+B+B+B+B+B+B+B+B+B+BCF102CF101+B+B(BOTTOM VIEW)D10