Kenwood-GC-401-EF-2-Service-Manual 电路图 维修手册.pdf

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1、 2002-9 PRINTED IN JAPAN B51-7966-00 (N) 1889 CD CASSETTE RECEIVER GX-401EF2 SERVICE MANUAL 1 BNR 2 REP 3 RDM 4 PROG 5 NEWS T/B CD T.I BAND TAPE POWER PUSH BRIGHT VOLUME DOLBY B NR COMPACT DIGITAL AUDIO VOL ADJ TONE/ BAL REG DISP SCAN MUTE LOUD AS LOCAL TUNE/ TRACK Front glass (B10-4256-03) Blind pl

2、ate (F19-1357-04) Knob (SEEK) (K23-1065-04) Knob (VOL) (K23-1066-04) Knob (1,3,5) (K25-1462-03) Knob (2,4,6) (K25-1463-03) Knob (CS EJ) (K24-3876-04) Knob (NEWS) (K24-3877-04) Knob (T/B) (K24-3878-04) Panel assy (A64-2724-02) Cassette lid (A53-1703-03) Holder (J19-5161-05) x 2 Cord with plug (E30-60

3、75-05) SUBARU GENUINE RadioFans.CN 收音机爱 好者资料库 2 BLOCK DIAGRAM L12 FM : 220mV AM : 150mV CD : 1200mV TAPE : 540mV CD-CH : 1200mV 0dB : +7dB : +15dB : +15dB : +7dB : +14dB TAPE CH CD FM AM 1kHz 0dB 1kHz 40kHz dev. 1kHz 30% mod. 1kHz 0dB 1kHz 0dB0dB -5.7dB 0dB -9.7dB -14dB AM FM CH TAPE CD TUNER PACK A

4、11 RDS IC13 SW-AMP E-VOL MPX IC21 IC22 IC31,32 FIX-EQ IC41 AMP POWER MUTE IC84 MEMORY RESET IC82 AM+B Q103 Q101 SW EQ, IC1 DRIVER MOTOR IC2 P-ANT Q94 BU-DET Q709 ACC-DET Q904 Q706 BU5V AVR A8V AVR Q704 Q708 PON5V SW LAMP AVR Q605,606 C5V AVR Q710 CD7V AVR Q701 DC/DC A61 CD MECHA B/2 (X25) MECHA CASS

5、ETTE DOLBY SYSTEM u-COM IC81 SP-OUT P-ANT BU ACC TEL-MUTE SMALL PANEL u-COM IC1 ED1 VFD MATRIX KEY LAMP FM+B SW A11ANT SW- IC21 FM AM CD-MECHA CASSETTE- CD-CH IC22 -19dB -11dB IC31,32 FIX EQ +34dB +34dB IC41 REAR SP SP FRONT Level difference of TUNER AMP MPX,LOUD, E-VOL, BASS,TRE, POWER each source

6、DME CME J1 FAD,BAL MECHA AMP ANT. CD-CH (X25) A/2 (X14) GX-401EF2 RadioFans.CN 收音机爱 好者资料库 3 COMPONENTS DESCRIPTION G Synthesizer Unit (X14-6212-71) Ref.NoApplication / FunctionOperation / Condition IC1Dolby B / Tape EQ amplifierPlayback EQ / Dolby B / between music detection IC2Motor driverFor casse

7、tte mechanism IC12Ope-amplifierRDS noise amplifier IC13RDS decoderRDS decode IC21Switch / Ope-amplifierCD/TAPE switch IC22Electronic volumeBASS/TRE/MPX/EV IC31,32Ope-amplifierFIX-EQ IC41Power amplifier4 channel/35W power amplifier IC71AVR controlAUDIO+8V power supply IC72Ope-amplifier1/2VCC output I

8、C81System computerSystem control IC82Reset ICReset detection IC84EEP-ROMMemory backup Q1Cassette mechanism main motor power switchCassette mechanism main motor Q2Cassette mechanism main motor power switchPch-SW Q3Gain switching when tape selected musicPch-SW, ON when playback a tape Q94P-ANT circuit

9、 control switchP-ANT circuit control Q101FM power switchFM 8V Q102FM power switchPch-SW Q103AM power switchAM 8V Q104AM power switchPch-SW Q107IF mode switch by forceOutput “Lo” when WIDE Q108Noise amplifierNoise detection ouput buffer Q109,110Noise amplifierNoise detection time constant switching Q

10、201Switch for sourceOutput “Lo” when TAPE Q202MUTE switchCD mute Q203MUTE switchICll3 hard mute Q204MUTE switchCD mute (Rch) Q205MUTE switchCD mute (Lch) Q601AVR switch for DC/DCPch-SW Q603AVR for DC/DC13V AVR Q604AVR control for DC/DC13V AVR Q605,606AVR for lamp9V AVR Q607AVR switch for lampNch-SW

11、Q608AVR control for lamp9V AVR Q609SMALL detectionOutput “Lo” when SMALL ON Q701AVR for CD mechanism7V AVR Q702AVR control for CD mechanism7V AVR Q703AVR switch for CD mechanism7V AVR Q704AVR8V AVR Q705AVR switch8V AVR GX-401EF2 RadioFans.CN 收音机爱 好者资料库 4 G System Microprocessor : UPD784216AGF-529-3B

12、A (X14 : IC81) PinPin nameI/ODescription / Processing Operation 1AM+BOAM power output.“H” : AM 2FM+BOFM power output.“H” : FM 3P_MUTEOP-AMP IC mute.“L” : Mute on 4P_STBYOP-AMP IC power control.“H” : ACC on, “L” : ACC off 5CD_LOE/LIM_SWICD DOWN LIMIT switch.“H” : Chucking 6CD_MOTOROCD motor driver co

13、ntrol.“H” : Loading/Eject mode, “L” : Other mode 7CD_LO/EJI/OCD loading/eject motor control switch.“Hi-Z” : Normal (“L” : MOTOR), “H” : Eject, “L” : Loading 8CD_MSTOPOCD mechanism standby control.“H” : CD mechanism on, “L” : CD mechanism off 9VDD- 10CD_MRSTOCD mechanism reset control.“L” : Reset 11C

14、D_MUTE_LIMUTE request from CD mechanism.“L” : Mute on request 12BEEPOBEEP output. 13NCONot used (N.C.) 14CD_I2CDATAI/OCD mechanism data input/output. 15CD_I2CCLKI/OCD mechanism clock input/output. 16NCONot used. Ref.NoApplication / FunctionOperation / Condition Q706AVR for microcomputer5.6V AVR Q707

15、AVR control for microcomputer5.6V AVR Q708Switch for P-ON 5VSwitch for P-ON 5V Q709BU detectionOutput “Lo” when BU ON Q710Cassette mechanism sub-motor driver power switchSub-motor driver VREF Q801MUTE switchICll3 and POWER IC hard mute Q802DSI controlOutput “Hi” when DSI light on Q803AVR control swi

16、tchON when P-ON 5V ON Q804,805MUTE switchICll3 and POWER IC hard mute Q901,902P-ANTcircuit protectionAntena short circuit protection Q903P-ANT circuit control switchP-ANT circuit control Q904ACC detectionOutput “Lo” when ACC ON G Switch Unit (X25-9382-70) Ref.NoApplication / FunctionOperation / Cond

17、ition IC1Display control microcomputerVFD control / Key matrix Q15V controlNch-SW Q2VFD power switchPch-SW Q35V controlVFD protection switch COMPONENTS DESCRIPTION MICROCOMPUTERS TERMINAL DESCRIPTION GX-401EF2 5 PinPin nameI/ODescription / Processing Operation 17CD_MUTE_RIMUTE request from CD mechan

18、ism.“L” : Mute on request 18NCONot used (N.C.) 19NCONot used (N.C.) 20REF_CONTOVoltage control of Avref.“H” : Active 21CH_REQHOCommunication reqest to CH. 22TESTI 23TYPE1ITuner 1 setting.Set up terminal for frontend test mode 24TYPE2ITuner 2 setting.Set up terminal for frontend test mode 25CD_LOS_SW

19、ICD loading detection switch.“L” : Disc, “H” : No disc, “L”“H” : Loading start 26CD_12EJE_SWI12cm disc detection switch.“L” : 12cm disc detected, “H” : Fixed by 8cm disc detected 27MUTEOAudio mute.“L” : Mute on 28P_ONOPeripheral power control.“L” : ACC on/PWR on, “H” : PWR off/ACC off 29CH_CONOCH co

20、ntrol output.“H” : CH on” 30CH_RSTOCH reset.“H” : CH reset 31CH_MUTEIMUTE request from CH.“H” : Mmute request 32ANT_CONTOPower antenna control.“H” : PWR on 33DC/DCOVFD display power control.“H” : Power on. Panel com VFD-ON terminal confirm “H” after that set “H”. 34NCONot used (N.C.) 35NCONot used (

21、N.C.) 36M_MOTOROCD mechanism main-motor control.“H” : Motor on 37VDD-Power supply. 38X2-Main clock (12MHz). 39X1IMain clock (12MHz). 40VSS-GND. 41XT2-Sub clock (32.768kHz). 42XT1ISub clock (32.768kHz). 43RESETI“H” input after initialise.“L” : Reset (less than 3V) 44BU_DETIBU detection.“L” : Normal,

22、“H” : Power down 45NCONot used (N.C.) 46ACC_DETIACC detection.“L” : ACC on, “H” : ACC off 47ILLM_OUTOLamp control.“H” : Lamp on 48CH_REQCIChanger communication request input. 49SC_REQIPanel communication request input. 50R_CLKIRDS clock. 51AVDD-Analog power for A/D. 52AVREF0-Reference voltage input

23、for A/D. 53SMALLISMALL detection.“L” : SMALL on 54PHONEITEL detection.1V : TEL mute 55R_REELICassette mechanism reel pulse input.Reverse rotation photo input 56F_REELICassette mechanism reel pulse input.Forward rotation photo input 57NCINot used (N.C.) 58NOISEINoise level. 59SMETERIS-METER level. MI

24、CROCOMPUTERS TERMINAL DESCRIPTION GX-401EF2 6 PinPin nameI/ODescription / Processing Operation 60MODE3ICassette mechanism positioning mode pluse input.FF/REW/FWD/REV detection 61AVSS-GND for A/D. 62SC_CONOPanel microcomputer operation control output. 63SC_BUSYIPanel BUSY input. 64AVREF1-D/A referenc

25、e voltage input. 65CH_DATACIData input from changer. 66CH_DATAHOData output to changer. 67CH_CLKI/OClock output to changer. 68SC_DATAIData input from Panel microcomputer. 69MC_DATAOData output to Panel microcomputer. 70MC_CLKOClock output to Panel microcomputer. 71MC_REQOCommunication request output

26、 to Panel microcomputer. 72NCONot used (N.C.) 73PLL_CEOPLL IC chip enable control. 74PLL_DATAOData output to PLL IC. 75PLL_CLKOClock output to PLL IC. 76DSIO Security LED control.“L” : Indicator light on, ACC off : 100ms light on (cycle is 2s), ALL off : Light off, During operation : Light on 77NCON

27、ot used (N.C.) 78SUB_POCassette mechanism sub-motor control. 79SUB_MOCassette mechanism sub-motor control. 80NCONot used. 81R_DATAIRDS DATA. 82QUALIRDS quality (Receiving mode). 83MTL_OUTOCassette mechanism output invert data, when metal detection.“H” : Metal, “L”: Normal 84MUSICICassette mechanism

28、between-music detection.“H” : Between-music, “L” : Music 85MSGVOWhen Cassette mechanism select music, gain switching.“H” : Normal, “L” : FF/REW/DPSS 86F/ROCassette mechanism F/R switching.“L” : FWD/Initial mode, “H” : REV 87METALICassette mechanism metal detection.“H” : Normal, “L” : Metal 88DOLBYOC

29、assette mechanism Dolby switching.“H” : On, “L” : Off/Initial mode 89EQ_MUTEOCassette mechanism EQ mute.“L” : Play, “H” : FF/REW/DPSS 90MODE2ICassette mechanism positioning mode pulse input.FF/REW/FWD/REV detection 91MODE1ICassette mechanism positioning mode pulse input.FF/REW/FWD/REV detection 92AF

30、CO AFC REQUEST output.Noise detection output time constant switching (FM), “L” : FM and AM seek, “H” : Normal receiving 93IF_MODEIK2I IF detection.“H” : WIDE, “L” : NARROW 94WIDEOK2I enforced WIDE. 95NARROWI/OK2I enforced NARROW. 96FM_SDIFM SD input. “H” : Station detected, “L” : Station not detecte

31、d 97SDA_IC2I/OElectronic volume data input/output. 98SCK_IC2OElectronic volume clock output. 99A_SELOAUDIO selection.CD/TAPE switching. “L” : CD, “H” : TAPE 100VSS-Connected to GND. MICROCOMPUTERS TERMINAL DESCRIPTION GX-401EF2 G Panel Microprocessor : UPD780021AGC-106-8BS (X25 : IC1) PinPin NameI/O

32、Description / Processing Operation 14KS0KS3OKey scan signal output 03 5VFD_BLKOVFD driver blank output 68NCONot used (OPEN) 9VSSGND 10VDDPositive power supply 1114NCONot used (OPEN) 15VFD_LATOVFD SIO latch 16VFD_DATAOVFD driver data output 17VFD_CLKOVFD driver clock output 18MC_DATAISystem computer

33、communication data input 19SC_DATAOSystem computer communication data output 20MC_CLKISystem computer communication clock input 21SC_BUSYOSystem computer panel BUSY output 22,23NCONot used (OPEN) 24AVDDPositive power supply 25AVSSGND 26ENC_UPIEncoder input (UP) 27ENC_DOWNIEncoder input (DOWN) 2833NC

34、INot used 34AVREFIGND 35AVDDNot used 36RESETIReset input“L” : Reset 37XT2Not used 38XT1INot used (GND) 39IC/VPPNot used 40X2Main clock (8.38MHz) 41X1IMain clock (8.38MHz) 42VSS1GND 43SC_CONISystem computer communication and panel operation control input 44MC_REQISystem computer communication and rec

35、eive request input 45,46KR1,KR0IKey return signal input 1,0 47SC_REQOCommunication request to system computer 4850KR2KR4IKey return signal input 24 51VFD_ONOVDD1 control for VFDOperat with system computers PON and PN_SC_CON, “H” : on 5264NCONot used (OPEN) MICROCOMPUTERS TERMINAL DESCRIPTION 7 GX-40

36、1EF2 A B Heat sink Heat sink Top plate Set up the screw point Holder Holder (J19-5161-05) Antenna cord Rear side Minus small size screwdriver G How to Remove the Holder Plugging the minus small size screwdriver to the holder toward A it causes it toward B. 1. How to enter the test mode is while pres

37、sing on MUTE and PRESET1 keys, press the POWER key . 2. Set FM mode press the BAND key. G Setting of FM ANRC Receive condition 98.1MHz, an electric field intensity are EMF 41dBV and Mod OFF. Complete on condition that show “ADJ OK” when pressing on PRESET1 and PRESET6 keys . G Separation adjustment

38、of K2I NARROW Adjustment at NARROW of manual mode. This manual mode (NARROW) setting on condition that “REP” lighting (switch PRESET5) and “RDM” not lighting (switch PRESET6). VR11 (FS) adjust the maximum separation when FM stereo standard input (98.1MHz, an electric field intensity are EMF 66dBV an

39、d 1kHz). G Setting of MW and LW seek stop level Receive condition 999kHz, an electric field intensity are EMF 35dBV and Mod OFF. Complete on condition that show “ADJ OK” when pressing on PRESET1 and PRESET6 keys . Releasing the test mode when BU OFF or POWER OFF. G Adjument of Dolby level Playback t

40、he TCC-130 (Dolby level tape). Test pin level at 300mVrms adjustment VR1 (TL) and VR2 (TR). G How to measurement FM WAIDE/NARROW 1. How to enter the test mode is while pressing on MUTE and PRESET1 keys, press the POWER key . 2. Set FM mode press the BAND key. 3. Measurement on condition that WIDE/NE

41、RROW are manual mode. Manual mode when “REP” lighting in testmode. 4. Change the “manual mode” and “automatic mode” on con- dition that press the PRESET5 key in test mode. Manual mode : “REP” lights Automatic mode : “REP” put out the lights 5. Change the “WIDE” and “NARROW” setting the manual mode a

42、fter that press the PRESET6 key. WIDE : “RDM” lights NARROW : “RDM” put out the lights ONOFF PRESET5 “REP”ManualAutomatic PRESET6 “RDM”WIDENARROW DISASSEMBLY FOR REPAIR ADJUSTMENT 8 GX-401EF2 ABCDEFGHIJ 1 2 3 4 5 6 7 109 PC BOARD (COMPONENT SIDE VIEW)PC BOARD (FOIL SIDE VIEW) CD PLAYER UNIT (X32-524

43、0-01) Ref. No. Address ICQ 12H 23I 45H 55I 13G CD PLAYER UNIT (X32-5240-01) Ref. No. Address ICQ 65B Ref. No. Address ICQ 23G 34I 43G 53H Refer to the schematic diagram for the values of resistors and capacitors. S2 S4 S3 S1 D4 D3 X32-5240-01 (J74-1249-02) C41 R54 R117 X1 R121 C72 C77 R125 C78 R122

44、R118 R126 R107 R108 C79 C80 R202 C71 C24 C26 R36 R34 C25R38 R37C28 R74 C21 R73 CP1CP2 R233 C85 C35 R82 C13 R75 R234 R71 C17 R18 C46 R15 R16 C89 R52 C15 C14 R32 C23 C51 R218 14 58 IC6 CN1 Q1 Q4 D1 Q2 Q3 Q5 CN2 X32-5240-01 (J74-1249-02) R81 R80 C16 R17 R76 C40 C44 R79 C4 R9 R5 C12 R19 C19 C18 R21 C70

45、R70 C39 R102 C68 R104 C42 R84 C69 R101 C67 R103 R214 C33 C10 C11 R40 R47 R46 R10 C8 C5 R12 C6 C3R6 R3 C20 C7 R11 R20 R49 C29 C1 C2 C55 1 16 221 G IO 141 2815 251 5175 76 100 50 26 161 1732 SPDL+ MOTOR S GND S 7.5V LOE/LIM DRVMUTE A +8V A GND Lch Rch SLED-/EJECT D GND SLED+/LOAD TRK- TRK+ /MUTEL LO/E

46、J /MRST /MUTER /MSTOP FCS- FCS+ PD LD BU 5V SPDL- LOS 8EJE DATA /CLK 12EJE VCC GND D OUT PON IOP- VR A B TE IOP+ E F Vref ARF RF D C GND DQS TVD ECM TRV ECS KICK TRD FOD 74 RW LDCNT VDET Vref TRCRS GCTL FE TE RFENV TBAL FBAL BDO LDON /RFDET OFT IC4 IC5 IC2 IC1 EB BE B E EB EB CD PLAYER UNITCD PLAYER

47、 UNIT KLMNOPQRST 1 2 3 4 5 6 7 1211 PC BOARD (COMPONENT SIDE VIEW) EB B E B E B E EB EB BE BE B E EB EB EB EB EBBE R102 R427 R429 R426 R430 R428 R425 R710 R806 R805 R809 R878 R825 R856 R848 C818 R888 R923 R1 R849 R847 R836 R850 R833 C28C30 R872 R860 R867 R863 R862 R864 R869 R873 R876 R875 X82 L62 R6

48、02 C603 R505 C712 R508 R840 R816 R815 C801 R826 R837 X81 R839 R846 R845 R829 R857 R832 W81 C800 R828 R870 R865 R858 R877 R823 R920 R834 R810 R820 R831 R841 R711 L801 R824 R835 R822 R821 R721 R15 R900 R880 C29 R851 R879 R898 R887 R13C8 R12 C14 R32 R31 R27 R28 C19 C20 C25 C26 L17 C121 R913 R918 R885 R

49、892 R896 R890 R886 R895 R897 R893 R910 R899 R891 R800 R801 R807 R808 R803 C803 R804 R818 R912 R914 R229 R911 R206 R230 L21 R802 R208 R827 R714 R209 R715 C716 R713 C313 C314 W12 C433 R435 R438 R440 C422C432 C434R436 R105 C421 C431 R437 R725 R707 R709 R706 R503 C713 F2 C424 F1 C423 C114 R117 R124 L16 C118 R119 R118 L14 L15 L13 C419 C708 R419 R421 R705 R702 OGI R439 41 5 8 148148 1717 122 14 58 1528 114 5 81 4 17 148 100 130 5180 81 31 50 111 212 1 1314 26 916 18 110 2130 31 4011 20 RHIUPL LRGND DOLB X11 W2 VR2VR1VR11 C215 R611 R612 R610 VPP GND L72 L71 C701 W11 L11 1 C703 R37 R38 R36 R