Kenwood-KRS-108-S-Service-Manual电路原理图.pdf

© 1999-12 PRINTED IN JAPANB51-7576-00 (N)1789CASSETTE RECEIVERSERVICE MANUALKRC-108S/188KRC-108SKRC-188Knob (EJECT)(K27-3554-03)Escutcheon(B07-2181-02)LCD(B38-1024-05)Panel(A64-1932-02)Cassette lid(A53-1675-03)Knob (REW)(K27-3556-04)Knob (FF)(K27-3555-04)Knob (EJECT)(K27-3554-03)Lever(D10-3031-04)x2Mounting hardware(J21-9491-03)DC cord(E30-4783-05) : KRC-108S(E30-4784-05) : KRC-188Stay(J54-0606-04)Screw set(N99-1632-05)Escutcheon(B07-2181-02)LCD(B38-1024-05)Panel(A64-1933-02)Cassette lid(A53-1677-03)Knob (REW)(K27-3556-04)Knob (FF)(K27-3555-04)KRC-108SKRC-1882BLOCK DIAGRAM . 3MICROCOMPUTERS TERMINAL DECRIPTION . 4ADJUSTMENT . 6PC BOARD . 7SCHEMATIC DIAGRAM . 11EXPLODED VIEW. 15PARTS LIST . 17SPECIFICATIONS . BACK COVERCONTENTSKRC-108S/188KRC-108S/1883BLOCK DIAGRAMIC1KEYMUTEB.U DET.B.UACCP-CONT.MUTEPREPOWER ICEQ.AMPAMPNC/MPXE-VOL.FRONT LchFRONT RchREAR Lch REAR RchJ2LEDTAPE MECHAMAINIC51 Lch 2 RchPRE OUTIC2IC4IC3SP OUTREARRST SWRST IC PST9130NRIC6ACC DET.P-CONT.ANT-CONTJ2J5HD74HC27FP40W TDA7384AFM+BQ201AM+BQ2035VAM BPF FM BPFQ450,451 Q62 Q50 Q350Q53SW5VQ568VQ60ILLUMIBU5VQ51SYSTEM u-COMTDA7400DRSTQ370ANT-CONTLA3161M38258MCDFP7SEG LCDED1FM ANT AM ANT RF GNDFM+B AM+BOSC GND OSC GND OSC GNDVTPLL +BIFC OUTSDASCLDIG GNDIF1+BIF1 GNDS-METERIF2 GNDSDFM+BPONACC DET B.U DETSCLMUTESDAP CON RESETFWD/REVMOTORRchCOMLchTAPEMP INAM MPXOUT RROUT LROUT RFLEVEL SCLSDAOUT LFSTBY MUTERchLchT-MUTEFWD REVB.USMUTE9(FF/REW)BU5VAM+BVDD 5VPACK INANT CONBEEPSVRAMP.STBYSVR ACGND(BEEP)RchLchTAPE :1681mVAM :546mVFM :1781mV8VRF GNDOSC GNDIF2 +BAUDIO OUT8VS-METERSDPLL-SCLPLL-SDAHEADR55.6mVBU5VB.U.5V8VBU5VAM:170mVFM:400mVLPACKINPLAYFF/REWILL9KS0-KS4KI0-KI32525SEG1-SEG22COM1-COM3AMP.MUTE8VBU5V(X13)MF/EKRC-188 ONLYKRC-108S/188MICROCOMPUTERS TERMINAL DESCRIPTION4Microcomputer (M38258MCD066FP : IC1 : X14)Terminal descriptionPin No. Pin Name I/O Signal Description Logic1 C1 I (NC) Not used.2 VL1 I VL1 LCD power input.3-5 P67-65 I KI0-2 Key return input.6-9 P64-61 O KS0-3 Key scan output.10 ANO I SMETER Signal meter.11 P57 O KS4 Key scan output.12 TOUT O BEEP Beep output.13 P55 O (NC) Not used.14 P54 O MOTOR Mechanism motor ON/OFF. H: ON15 P53 I FF/REW Mechanism FF/RWD detection. L: Detected.16 P52 I PACK_IN Mechanism cassette pack-in detection. H: Detected.17 P51/INT3 I KI3 Key return input.18 P50 I FWD/REV Mechanism play direction detection. H: FWD19-25 P47-41 O (NC) Not used.26 P40 I SD Station detection. H: Station detected.27 P77 O PLL_CLK IC3 clock output.28 P76 I/O PLL_DATA IC3 data input/output.29 P75 I IFC AM bandwidth. H: Station detected.30 P74 O AM+B AM power output. H: ON31 P73 O FM+B FM power output. H: ON32 P72 O SCK IC2 clock output.33 P71 I/O SDA IC2 data input/output.34 P70 O (NC) Not used.35 RESET I RESET Reset input.36,37 P81,80 O (NC) Not used.38 XIN - X_IN Clock input.39 XOUT - X_OUT Clock output.40 Vss - Vss Power input (0 V).41 P27 I IC2_TYPE1 IC2 constant switching.42 P26 I IC2_TYPE2 IC3 constant switching.43 P25 O (NC) Not used.44 P24 I SEL1 Destination type switching.45 P23 I SEL2 Destination type switching.46 P22 O MUTE Muting ON/OFF. H: MUTE47 P21 O STBY Power IC standby control. H: ON48 P20 O SVR Power IC SVR control. H: OFF49 P17 I ACC_DET Acc detection. H: ACC OFF50 P16 I BU_DET Momentary power down detection. H: Power down.KRC-108S/1885Pin No. Pin Name I/O Signal Description Logic51 P15 O P_MUTE Power IC muting control. H: Power down.52 P14 O ANT_CON External antenna control. H: ON53 P13 O P_CON Power control output. H: ON54 P12 O ILLUM_ON Illumination control. H: ON55 P11 O (NC) Not used.56 P10 O SW5 5V power control. L: ON57 P07 O EQ_MUTE Equalizer muting. H: MUTE58-64 P06-00 O (NC) Not used.65,66 P37,36 O (NC) Not used.67,68 SEG23,22 O (NC) Not used.69-90 SEG21-0 O SEG22-1 LCD segment output.91 Vcc - Vcc Power input (5 V).92 VREF - VREF A/D reference voltage input.93 Avss - Avss Analog power input (Vss).94 COM3 O (NC) Not used.95 COM2 O COM3 LCD common output.96 COM1 O COM2 LCD common output.97 COM0 O COM1 LCD common output.98 VL3 I VL3 LCD power input.99 VL2 I VL2 LCD power input.100 C2 I (NC) Not used.MICROCOMPUTERS TERMINAL DESCRIPTIONHow to Read the Destination TypeThe destination type is set by reading the following microcomputer ports atthe time of reset-start of the microcomputer.Once the destination type is read and set during the microcomputerresetting, any change in the ports during the microcomputer operation willbe ignored.Destination Type SEL1 SEL2KLLMLHJHXX: dont care6Set the controls and switches as follows.BALANCE : center position BASS : center position LOUD : OFF DOLBY NR : OFFFADER : center position TREBLE : center positionADJUSTMENTNo. ITEM TAPEOUTPUTSETTINGSRECEIVERSETTINGSALIGNMENTPOINTSALIGN FORCASSETTE DECK SECTION1HEADHEIGHTSCC-1659 - TAPE PLAYHead HeightScrew1) During FWD transport adjust (F) and (F) so thatline A of 2-LINE TAPE passes trough the center ofthe head shield plate (core center area)2) During RVS transport adjust screws (R) and (R)so that line B of 2-LINE TAPE passes trough thecenter of the head shield plate (core center area)3) After the alignment above, reverse the trans-port direction and check the FWD alignment again.If it is deviated, perform alignment again. (Tapeused : SCC-1659, manufactured by A-BEX)2HEADAZIMUTHTCC-15310kHzConnect aAC voltmeterto SP out.TAPE PLAYHead AzimuthScrewAdjust the azimuth for each Lch/Rch or FWD/RVSbecomes maximumHEIGHTF(FWD)HEIGHTTAPE SPEED(RVS)HEIGHT/AZIMUTH(FWD)HEIGHT/AZIMUTH(RVS)FRR(2-LINE TAPE)(FWD)(RVS)BABAKRC-108S/18878PC BOARD (COMPONENT SIDE VIEW)A B C D E F G H I J1234567112CN1R4R1R2R3SRCATT1 2345 6AUTOCLKRSTBANDAUDD10D11D12D7D8D9D3D2D1D6D5D4X13-9660-10 (J74-0964-12)R203R201R207C154R206C156C157C155C151R150R205W116C210C251R251R61W115R135C14R58W118R155R15W112R14R62W113R152C52R59W109R60R57W117W114R16R13W110C153C158R372R151R156C13R52R54R352C351TH1R154R153C54R63R64C452C202C200R455R453R454R451R450C201R452R158C1R1C2R2C5C6W121C8R8R4R6C7R7R5R3C164R134C60R108W102R250W111R101R102R103W120R120R121R123R122R157C103W104C102W103W105W106C104R109R124R125R127R126R107C101W108R114R115R117R112R131R113R69W107R68R118W101EBEBBEBEEBBEEBBEEBEBBEEBBEEB2815141178 141 35 48081100130 315051EBBEEBEBEBEBBEEBEBQ200Q202Q150IC1Q153Q61IC2Q52Q371Q59Q58Q57Q151Q55Q62Q54Q53Q50Q353Q352Q351Q451Q450Q260IC3Q301IC6W83W60W66 W67W86W81W85W62W59W50W25L8/W11W52W78W48W10W57W55W65W63C150W76W77C206L9W74W75W80W36W26W34W18W8W2W40W24W13W73C4C3W16W15W21W72L5PL1W1W4W19L4L10/W84W7W9W69W17W5W70W12W6W20W64W28W41W61W22W47W45W30W32W53ED1W29W54W56W51W49W27W35W58W37W31W38W44W14W23W33W46W43W68W79W39PL2R200R202C15R55R67R350R370R373C55C56R371R307R303R50R65R351R353R66C50C160R300C161C350C352C162C159R106C58C53C57L1R261R260R302C9C250C10R301R105R104R110R340X1C152C18C16C17C451C450L3R119R1111 252428 191651181 9 10 21 22 2512 1124161 2BEBEBEB EEBBEBEBEX14-6150-10/0-21(J74-0960-12)J2A1J1IC4J2WH1D261P1Q201Q203D200Q60Q56D370D50Q370D371CN2D151D152D150D352J5Q51Q350D56D52D51D55D54D350D351D53D101Q261D260IC5CN1D13D102D103D104D100Refer to the schematic diagram for the values of resistors and capacitors.IC Q address16H24F3442G55J65G50 4I51 4I52 4I53 4J54 3I55 3I56 2J57 3J58 4J59 4J60 3J61 3J62 4I150 4F151 3G153 3F200 4E201 3E202 4E203 3E260 5F261 5E301 5F350 3H351 4H352 4H353 4H370 3H371 4H450 2F451 2FRefer to the schematic diagram for the values of resistors and capacitors.910K L M N O P Q R S T1234567PC BOARD (FOIL SIDE VIEW)IC Q address16P24R3442Q54N64R50 4O51 4O52 4O53 4N54 3O55 3O56 2N57 3N58 4N59 4N60 3N61 3N62 4P150 4R151 3Q153 3S200 4S201 3S202 4S203 3S260 5R261 5S301 5R350 3P351 4P352 4P353 4P370 3Q371 4Q450 2R451 2RW106R151W118BER205C210W117C202W101C200C201BEBR102R101W120C101R103R113R109R108R112R1071001C60BR206C153W116BER207C156R135R134E78114C164R203BEC155R150C157C154C158BER2011514C14R11554C104R114R117R118R69W10713W108R155C13281C151R157R158R156BEER154R372C1038180C102505131 30R121 R125R122R127R123R120C5R7R3C7R5R59R68R131R124R126R57C52R352BBEC351W114ER52BEEBR54C54R58C6R8R250C8R6R4C2 R2C1 R1C251R251W115EBBER60R61BEEBEBR63R62R64BER454R451 R450C452R452R455BER453BEEBW102W105W104W103W112W111R152W110R13R16R153W121W113W109TH1R14R15BEBEQ151Q260Q301Q202IC3Q200Q150IC2Q371IC6Q351IC1Q50Q352Q353Q62Q59Q58Q53Q54Q52Q61Q153Q450Q451Q55Q57R370R350W75121R261R307W1BEL924C206L8/W11L10/W841ED1C350W51W46W13R104W10W21W4R105R106R2601W15W16W191W41R300R302R303R301W33R110W23W38W44W43W18W17C1526W9W7W5W2W14W12R202BEEBR200W6W20W31W35W29W27W22W32W30R119W37W39W45W47W49W40W28W24C150W25L3R373R371BEW86PL1910PL221X1W682225R340C9W85C2508C3C352W53W58W54W56W61W64W72W67 W66W70 W69C55R353EBW83R55R50C53C10W731W79C56W8151C4R111W78BEW74C58R67C57BL5L4C1512W8C450C451C17C160C159C18C16C161C162W50W3412W26W48W362524W62W63W57R351W55W52W60W59W65C50168W77W76R66R65EL1BE91W80D151Q370Q203Q261A1D352CN2P1D100D261D260D103D102D101WH1D104D200D13D152D150CN1D52D351Q350D54D51D350IC5D55Q51D53D56(J74-0960-12)X14-6150-10/0-21J1Q201J5IC4D371D370J2D50J2Q60Q56121CN1123ATTR3AUDSRCAUTO45R1RSTBANDR4R2CLK6D2D4D9D1D10D11X13-9660-10 (J74-0964-12)D8D7D5D3D12D6A B C D E F G H I J12345670V4.1V 4.1V5.0V3.3V8.3V0V3.3V0.8V1.3V0V7.2V0V0V4.5V14.0V 0V 7.2V 7.0V7.0V7.0V 0V14.0V3.8V 0V7.2V 7.2V 7.2V 7.2V0V0V5V0.8V 1.3V7.0V1.8V0V4V0V5V0V5V0V5V0V5V0V0V 0V 0V5.0V0V0V5V0V5.0V5.0V3.4V0V0V5V0V0V5V5.0V0V5V4.0V0V5V8.3V4.8V3.4V7.2V 7.2V 7.2V AM+B1923202122AUDIO OUTSDS-METERIF1+B141718VDD 5VIF2+B1516SDASCLDIG GND10111213OSC GNDVTPLL+BIFC OUT789OSC GNDOSC GNDOSC GNDFM ANT3456AM ANTNCFM+B12RF GND1410u16C450 +270R45010u16C451R451R454100 R45230K2 LchR45330KR455100+2701 2 4 53 7 861091211 13CDROUT LR1 RchACOUT LACOUT ROUT LF OUT RFCREFVREF TAPERTAPEL28 27 25 2426 20OUT RRVDDPH-CD LCD GND AMPH+212223GNDMUX R MUX LSMUTESDASCLQUALMPX MP INLEVEL1819 1517 16MP OUT16 15 14 13 12 11 10 98765 4 321FL+ RL+FL- RL- FR-RR- FR+ RR+P-ANT P-CONACCB.UGND2 4 6 8 10 12 14 16 18 20 22 24GNDSTBYVCC GND SVRRR INFL INACGNDGND VCCMUTEGND1 3 5 7 911 13 15 17 19 21 23 25TABRR- RR+ FR- FR+ FR IN GND RL IN RL+ RL- FL+ FL- CD19231721937 517 232119L13300u16C50+654321T.MUTEGNDMOT GNDMOT +BPACK INGND10KR2611K47KR570.01C5247KR55R50 3.3K 1/2W30KR5210KR54R350 4.7KR3511KR3523.3u25C350+22KC3510.1u50C352+1K 1/2W0.0684.7KR160.22u50C180.22u50C154.7KR130.22u50C174.7KR150.22u50C16R14 4.7K100u10C159+C16010u161K4.7K4301u50+180K1u50C162 +R15733K7500.01C161R154R155R156232425260.01C15147u10C150+L3 4.7uH0.082C1584.7KR1500.1C1550.015C1530.22C1540.033150PC157C156C14C131u50C152+23IF1 GNDIF2 GND0.01C2004.7uHR20515027284.7uH1026C206 47u10+4.7uHL512345FWD/REVGNDHEAD RHEAD COMHEAD L0.047C25110KR2511500PC21500PC122KR122KR2100u16C57+10K100u10C58+1KR641KR63R652.2 1/2WR662.2 1/2W4.7K2.7KR207 R2064324 260.22 0.2248 47 5149C56100u6.35.6KR61+47KR6010u10R5822K100R59C55+C540.01100u16+53R68100K100KR693 75 9GND76543219811101213VDD14+0.0224C7120KR7100u10100+100PC5C96.8KR3L IN8L NFL OUT7 6C347u6.3310R250120KR8C250100u10+C80.022C10100u10R4100GND VCCR OUT5 4100PC6R NF3 2+C447u6.3R IN11/2W0.01C21032332523C53F1 10A53241GND1PACK IN2T. MUTEMOT +BMOT GNDGND63451/2WTH1C45212345R373R371R370 4.7K1K22KR3721KW83W12110047K0.22100R1350.01C1643031R2001KC201 0.01R2021KR20322KR20122KW841110987654321100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 8131 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50AM+BPLL DATAPLL CLKSDFWD/REVKI3PACK INFF/REVMOTORREMOBEEPKS4SMETERKS3KS2KS1KS0KI2KI1KI0VL1VL2 VL3COM1 COM2 COM3 AVSSVREFVCCSEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9SEG10P-MUTEANT. CONP-CONILLONSW5EQ-MUTESEG22SEG21SEG20SEG19SEG18SEG17SEG16SEG15SEG14SEG13SEG12SEG11FM+B SCK SDARESET XIN XOUT VSS IC2 TYPE1 IC2 TYPE2 SEL1 SEL2 MUTE STBY SVR ACC DETBUDETR102121110987654321RSTKI3KS4KS3KS2KS1KS0KI2KI1KI0ILL +BILL GND2.2KR307R110 1KR106 1KR105 1K R104 1K21213141516171819202122232425262728293052515354655755565859606162636470666768697172737475787677798097R103 10KR302 47KR303 47KR300 47K47K51545352562630272810R3015647KX18.664MHz27PC10227PC10349484746 507271706976807978777473758790 89 889596 86 85 84 83 82 811198576431718R671K1514R2601415R122 47KR123 47KR121 47K R120 47KR125 47KR127 47KC104 0.1231 333254R118R117 1KR107 2.2KR111100KR109 47KR108 47K10KR1014.7KR113 1KR1151K10KR11410KR1195.6R340PL2PL1352R134C604650312546871191012330R3 R4330R2330R1330KI1KI0KS1KS0KI2KS3KS2KI3KS4KI2KI3KI0KI1KS4 KS2KS3 KS0KS14567891117BUYELACCGNDBLKREDBLU11109231P. CONT OUTREAR RVIOLVIOL/BLKREAR LGRN/BLKGRNBLUGRYGRY/BLK141312654WHT/BLKWHT161587ANT. CONTFRONT RFRONT LBUYELREAR LREAR RVIOLVIOL/BLKGRN/BLKGRNGNDBLK91ACCFRONT LP. CON/ANT. CONREDBLU/WHT101112234GRYGRY/BLKWHT/BLK141513765FRONT RWHT168GRN/BLKWHT/BLKFRONT L REAR L141513111210BATT BUYEL9REAR RVIOL/BLKVIOLBLK1FRONT RANT. CONTBLURED342GRY/BLKGRY675ACCGNDANT.CONTACC16GRNWHT8R152R151 R1580.01C101L9L10L452mHP1R62R5 R66.8K18UNIT No.KRC-188RX-270KRC-108SMODEL NAME0-100-13KRC-108S 0-14IC4Q50Q58,59Q60,61Q151Q200,201Q202,203Q260,261Q350,353R353R1121KR13110KW117L84.7uHW11W116C202 0.01IC2 Q150Q301Q351Q35291KR153A1REAR PRE OUTQ450J5Q451J2D50WH1D261D260Q260Q62D52D51Q50B.U DET SWD351Q350D350P-CONQ351D352Q353Q352Q151D151D150Q150D200ANTJ1CN1Q55Q54 D55Q56Q578V DRIVERP-ON 5VQ53Q52Q51D53D54Q153WH1Q261F/EQ371D370Q370D371AQ200FM+B SWAM+B SWQ202Q203Q201CN2D56Q60Q61Q58Q59D13D100D101D102D103D104Q301CN1D7D8D9D12D11D10D6D5D4D3D2D112BAND ATTVOL+VOL- CLKT.43 AUTO 5T.UPAUDIO6SRCEJECTDOWNRSTB30-1565-05D1-12 : (X13-9660-1x)SYSTEM u-COM POWER ICEQ AMPRESET ICB.U. 5VDRIVERSW8V SWILL+B SWILL+B DRIVERACCDET SWFORCEDPRE OUTMUTE SWMUTE SWPREOUTMOT+B SWP-CONDRIVER SWANT-CONDRIVER SWE-VOL.MUTE LOGICIC E-VOL.MUTE SWP-CONPROTECTIONSWPROHIBIT SWP-CONPROTECTIONDISCHARGE SWLOGICRESETINVERT SWD1524.7K 4.7K22K22K47K10K47K10K22K22K22K22K47K22K47K22K47K10K22K22K22K22K47K10K47K22K47K22K47K47KIC2IC4IC6IC3IC5SYNTHESIZER UNIT (X14-6150-10)CASSETTE MECHA(D40-1137-05)IC1KRC-188(M)DC CORD(E30-4784-05)(E30-4783-05)KRC-108S(K)DC CORDDC CORDRX-270(J)(E30-4806-05)(X13-9660-1x)CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list).Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall becarried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer. DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individualinstruments or/and units.!KRC-108S/188K L M N O P Q R S TB LINEchREP RDMSCNATTSTEREOT.CALLLOUDAT