Kenwood-KDC-2021-SG-Service-Manual 电路图 维修手册.pdf

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1、 2001-12 PRINTED IN JAPAN B51-7873-00 (N) 1930 CD RECEIVER KDC-2021SA/SG SERVICE MANUAL COMPACT DIGITAL AUDIO RDMLOUDREPSCAN OFF KDC-2021S MONO AMEAUTOADJCLK AUD 45Wx4 Panel assy (A64-2564-02) DC cord (E30-4790-05) Lever (D10-4589-04)x2 Escutcheon (B07-3054-02) The CD mechanism infomation is not in

2、this sarvice manual. Please, refer to sarvice manual X92-4030-0 x (B51-7867-00). Plastic cabinet assy (A02-1486-13) Mounting hardware assy (J21-9641-13) Antenna adaptor (T90-0523-05) Front glass (B10-4141-01) CD mechanism extension cord : W05-0618-00 RadioFans.CN 收音机爱 好者资料库 KDC-2021SA/SG 2 BLOCK DIA

3、GRAM CD IC4 IC12 IC1 POWER IC TUNER FM+B AM+B SW5V BU5V A8V SERVO CH BACK UP E-VOL & MPX u-COM BU5V TEL-MUTE ACC DET. BU DET. IC2 SW5V E2PROM SW5V SERVOSW14V IC7 IC2 IC1 PRE OUT SP-OUT ACC TEL-MUTE BACK-UP P-CON ANT-CONT POWER SUPPLY MUTE PRE MUTE DSIBU5V REMOTE SW5V PAN DET. PAN5V PAN5V LCD DRIVER

4、KEY MATRIX With ILLUM SW A8V CONTROL BU5V MARINE CN. ANT-CON DET. P-CON DET. FM DET OUT AM DET OUT REQUEST LO/DX PLL-CLK PLL-CE S-METER PLL-DATA SD MSDA MSCLK SW2 SW1 SW3 M MUTE RST STOP LO/EJ MO SW RST CH-CON MUTE DATA C REQ H DATA H CLK REQ C FM AM CD CH AFS NOISE DET LEVEL DATAS MUTE LO/DX PLL-DA

5、TA PLL-CLK AFS NOISE S-METER SCL SD SDA PLL-CE EN2 EN3 EN1 PC DET PA DET CLK DATAL CE REMO PANEL DSI RES SDA SCL P-CON P.ANT FM+B VP2 AM+B AUDIO ILLUM BU5V SW1 SW2 203mV 170mV 1200mV 1200mV 382mVK: E: 382mVJ: (K) FM (E) (K) (J) (J)AM (E) : 1605mV : 1276mV : 561mV : 1700mV : 561mV : 792mV : 3529mVCD.

6、CH LCD RadioFans.CN 收音机爱 好者资料库 KDC-2021SA/SG 3 MICROCOMPUTERS TERMINAL DESCRIPTION SYSTEM MICROCOMPUTER uPD780058GC-XXX (IC1:X25) Pin No.Pin NameI/OPurposeProcessing in STBY Mode 1PANELIPanel detectionHi-Z 28EJE SW *1I8 cm disk eject end detection switchL, L when the 8 cm CD compatibility is not pro

7、vided. 3NCONot usedL 4AVss-GND potential (for A/D and D/A)- 5L-RSTOLCD driver resetH, L when the panel is detached or with 7-segment output. 6L-CEOLCD driver chip enableL, L is output when the panel is detached. 7AVREF1I5V power supply (D/A converter reference voltage)- 8NCINot usedHi-Z 9PLL-DATAI/O

8、F/E (IC3) communication dataL 10PLL-CLKOF/R (IC3) communication clockL 11L-DATALILCD driver communication data (LCD)Hi-Z 12L-DATASOLCD driver communication data (SYSTEM)L, L is output when the panel is detached. 13L-CLKOLCD driver communication clockH, L is output when the panel is detached. 14R-DAT

9、AIRDS DATAHi-Z, L when RDS is not available. 15R-QUALIRDS QUALHi-Z, L when RDS is not available. 16CH-DATACI5-wire communication data (CH)Hi-Z, L when CH is not available. 17CH-DATAHO5-wire communication data (HEAD)L, L when CH is not available. 18CH-CLKI/O5-wire communication clockHi-Z, L when CH i

10、s not available. 19CH-REQHO5-wire CH request (HEAD)H, L when CH is not available. 20PLL-CEOF/E chip enableL 21AFSONoise detection time constant switchingL 22LO/DXOLocal seek switchingL 2326NCONot usedL 27SDIStation detectionHi-Z 28CH-CONTO5-wire communication CH ON outputL, L when CH is not availabl

11、e. 29TYPE REFODestination type and servicing setting 5V outputL 30TYPE2IDestination type settingHi-Z 31TYPE1IDestination type settingHi-Z 32TYPE0IDestination type settingHi-Z 33Vss1-GND potential (for other parts than ports and analog circuitry)- 34IC2TYPE1IServicing pin (SEL1), normally “L”Hi-Z 35I

12、C2TYPE0IServicing pin (SEL0), normally “L”Hi-Z 36DATAI/OIC2, CD mechanism and F/E communication dataL 37CLKOIC2, CD mechanism and F/E communication clockL 38MUTEOMuting control outputL, 15 sec. after power OFF. 39P-MUTEOPWR IC muting outputH, 15 sec. after power OFF. 40SVROSVR control outputL 41P-ST

13、BYOPWR IC standby outputL 42SW5VOSW5 control output“H” in 10 sec. after power OFF. 43B.U-DETIB.U. detectionHi-Z 44ACC-DETIACC detectionHi-Z 45,46NCONot usedL 4749PS1-0PS1-2OPower supply IC AUD/P.CON/P.ANT SWL 50BEEPOBuzzer outputL 51,52PS2-0,PS2-1OPower supply IC ILL/AM/FM SWL 53DSIODSI control outp

14、utL, H/L when panel is detached. FIX output is L. RadioFans.CN 收音机爱 好者资料库 KDC-2021SA/SG 4 MICROCOMPUTERS TERMINAL DESCRIPTION / ADJUSTMENT Pin No.Pin NameI/OPurposeProcessing in STBY Mode 54LOE/LIM SWICD mechanism Down & Limit detectionHi-Z 55MOSWOCD mechanism motor switchingL 56LO/EJI/OLo/Ej switch

15、ingHi-Z 57M-STOPOMechanism COM stop outputL 58M-RSTOMechanism COM reset outputH 59M-MUTEIMechanism COM mute inputHi-Z 60RESETISystem reset inputHi-Z 61REMOIRemote control inputHi-Z 62R-CLKIRDS CLOCKHi-Z, L when RDS is not available. 63CH-REQCI5-wire CH request (CH)Hi-Z, L when CH is not available. 6

16、4LOS SWILoading SW detectionHi-Z 65KEY-REQIKey input detectionHi-Z 6612EJE SWI12 cm disc detectionHi-Z 67Vss0-GND potential (for ports)- 68VDD1-Positive power supply (for other parts than ports and analog circuitry)- 69X2-Main system clock oscillation- 70X1IMain system clock oscillation- 71IC-Flash

17、uCOM write- 72XT2-Not used- 73XT1-Not used (Connected to 5V power supply)- 74VDD0-Positive power supply (for ports)- 75AVREF0I5V power supply (A/D converter reference voltage)- 76S-METERIS-meter inputHi-Z 77PHONEINavigation muting 2.5V or more, Telephone muting 1V or less.Hi-Z, L when TEL is not ava

18、ilable. 78NOISEIFM noise detectionHi-Z, L when RDS is not available. 79NCONot usedL 80AVCONTOA/D reference voltage controlL No.ITEMINPUT SETTINGS TUNER (RECEIVER)ALIGNMENT ALIGN FOR SETTINGSPOINTS FM SECTION 98.1MHzTEST MODE : ON While holding preset “1” key, press and 1SD0 devFM Preset “1” key, and

19、hold preset “6” key for a few seconds. 35dB (ANT input)98.1MHz preset “6” key“1111” is good. “0000” is not good. AM SECTION 990kHzTEST MODE : ON While holding preset “1” key, press and (1)SD0% modAM Preset “1” key, andhold preset “6” key for a few seconds. 35dB (ANT input)990kHz preset “6” key“1111”

20、 is good. “0000” is not good. TEST MODE : ONWhile holding the FM key and preset “6” key, reset the unit. TEST MODE : OFFReset the unit. ADJUSTMENT ABCDEFGHIJ 1 2 3 4 5 6 7 65 PC BOARD (COMPONENT SIDE VIEW) Refer to the schematic diagram for the values of resistors and capacitors. IC1 D267 D264 D268

21、D13 D11 Q20 Q201 IC2 IC6 Q102 Q224Q223 Q222 Q251 Q51 Q50 Q221 Q101 Q53 IC8 IC11 IC12 D102 Q40 Q10 Q70 J1 X25-9142-7x (J74-1368-12) CN3 CN1 CN2 J2 J3 A1 D108 Q55 D1 D403 D265 D266 D263 D261 D262 D14 D12 D110 D251 D101 D103 D104 D253 D252 D109 D106 D107 J5 P1 D30 D202 D201 D10 D50 D20 D404 D402 D401 D

22、407 D411 D410 D409 IC4 J4 D111 D70 D51 IC7 D40 X25-9120-xx/913x-xx (J74-1290-12) R56 W157 R123 C211 W160 C208 C104 C62 W156 C225 R139 C307 W163 W164 C226 W167 W168 C59 R57 W166 C356C355 TH1 R127 R126 R128 R130 R129 R125 R122 R138 R137 R143 R144 R132 R131 R133 R140 R134 R119 R104 R103 R105 R107 R106

23、R102 R136 R135 C207 R67 R115 R114 R116 R118 R117 R113 R108 R110 R112 R111 R261 R260/W178 R263 R255 R254/W176 R256 R258 R257 R413 R412 R414 R415 C30 C21 R202 R201 R203 R205 R204 C103 C202 C206 C142 C106 C102 R251/W177 R222 R221 R223 R224 C354 R12 R23 R22 C404 R11 C305 C303 C302 R10 R52 R58 R51 R31 C2

24、09 C210 R32 W179 CP3 C352 W162W161 R53 C64 C310 R54 C60 R55 C61 CP1 W151 W158 C40 W152 C309 W165 R264 CP2 W159 C105 R121 W155 W150 C500 R71 R72 C228 R73 W169 W171 W172 W173 W174 C501 R142 C311 C312 C313 80 61 40 21 1 20 41 60 2 1 43 17 814 14 58 114 1528 1 16 8 9 EB EB E B E EEB B E BE EB BE EB EB E

25、B EB EB EBEB W53 W54 W142 W66 W79 C58 W38 C1 W82 L1 W108 W119 W85 W112 W132 W81 W137 W58 W44 W55 W37 R404 R402 R408 R411 R409 R410 R407 R405 R406 R403 R401 R231 R232 W91 W1 R227 R228 W3 W47 W14 W87 W120 C403 C402 W61 C253 W39 C252C254C251 W83 C401 R253 W50 R252 W86 W90 W93 W124 R301 C63 W114 W84 R28

26、 R25 R21 R20 R30 R165 R166 R167 R101 R163 R164 R168 R172 R229 R230 R169 R170 R171 X1 X2 W41 W129 R145 W56 R352 R351 R259 R353 R226 R225 W17 R50 L4 L305 L306 L304 L101 L303 L201 C222 C221 C223 C51 C52 C53 C55 C56 C54 C205C204 C353 C257 C351 C224 C258 C203 C255 C101 C304 C201 C256 C57 C301 C306 W6 W5

27、W51 W57 W60 W45 W48 W25 W35 W31 W23 W30 W27 W22 W28 W40 W42 W43 W13 W15 C50 W67 W115 W102 W133 W122 W136 W135 W113 W125 W134 W111 W104 W103 W88 W89 W70 W74 W65 W68 W80 W19 W46 W75 W52 W49 W96 W92 W101 W71 W69 W18 W12 W29 W2 W20 W4 W10 W11 W7 W21 W9 W100 W72 W32 W26 W95 W121 W73 W77 W76 W59 W24 W33 W

28、34 W36 W138 W105 W62 W64 W78 W130 W128 W131 W94 W99 W116 W117 W98 W97 W106 W110 W127 W107 W63 W139 L2 W140 W141 W143 R173 R141 W16 9 16 81 251 2242348 9 12 11 13 106157 2 1 1 3 1 24 151 142 121 222 1 12 B E (FOIL SIDE VIEW) KI3 KI1 KI5 KI2 KI4 KS3 KS4 KS5 KS2 VOL SRC ATT 123456 RST CLK TI AUD AM FM

29、139 D19 ED1 D20 D13 D6 D7 D9 D8 D5 D2 D1 D4 D3 D17 D18 D12 D10 D11 IC2 X16-1482-7x (J74-1285-12) X16-1460-xx/ R21 R22 C6 C7 C9 R18 R13 R12 R15 R14 R10 R3 R2 R5 R4 R20 C5 R19 R16 R17 C3 C2 C1 R8 R7 C4 PAN5V RES KI2 KI3 KI1 KI4 KS5 SW5V L-CE DATAL REMO ILL GND DATAS L-CLK LED+B PAN-SW KS2 KI5 KS4 D-GN

30、D ESDGND 142 115 116 3348 32 1764 49 BE KS3 Q1 IC1 J1 D22 X16-1482-7x (J74-1285-12) X16-1460-xx/ X16-1482-74 X16-1482-75 IC QAddress 15D 16D IC QAddress 15F 24H 42H 73E 84G IC QAddress 115E 124H 103F 203G 403I IC QAddress 504G 513E 552E 703F 1016E IC QAddress 1026F 2232I 2242I 2513G X25-9142-76 ABCD

31、EFGHIJ 1 2 3 4 5 6 7 47K 10K 10K 47K 4.7K 4.7K 22K 22K ILL+B ILL+B ILL+B ILL+B ILL+B BU5V SW5V SW5V SW5V SW5V SW5V SW5V SW5V SW5V SW5V SW5VSW5V SW5V +5V+5V +5V+5V+5V +5V +5V +5V +5V +5V +5V ILL+B ILL+B ILL+B BU5VBU5V BU5V BU5VBU5VBU5V BU5V BU5V BU5V AUDIO+B AUDIO+B SW5V FM+B AM+B FM+B AM+B FM+B AM+B

32、 AUDIO+B AUDIO+B AUDIO+B AUDIO+B AUDIO+BAUDIO+B AUDIO+B AM+B FM+B AM+B FM+B +B +B +B +B +B +B+B +B +B +B +B +B +B 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 61 62 63 64 65

33、66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 RESET M-MUTE M-RST M-STOP LO/EJ MO SW LOE/LIM SW DSI PS2-1 PS2-0 BEEP PS1-2 PS1-1 PS1-0 N.C N.C ACC-DET B.U-DET SW 5V P-STBY SVR P-MUTE MUTE CLK DATA IC2 TYPE0 IC2 TYPE1 VSS 1 TYPE0 TYPE1 TYPE2 TYPE REF CH-CON SD N.C N.C N.C N.C LO/DX AFS PANEL 8EJE SW N.

34、C A VSS L-RST(ONLY 14seg) L-CE AVREF1 N.C PLL-DATA PLL-CLK L-DATAL L-DATAS L-CLK R-DATA R-QUAL CH-DATAC CH-DATAH CH-CLK CH-REQH PLL-CE REMO R-CLK CH-REQC LO/S SW KEY-REQ 12EJE SW VSS 0 VDD 1 X2 X1 IC XT2 XT1 VDD 0 AVREF0 S-METER PHONE NOISE N.C AV CONT 1 3 5 7 9 11 13 15 17 19 21 23 25 TAB OUT2- OUT

35、2+ OUT1- OUT1+ IN 1 S GND IN 3 OUT3+ OUT3- OUT4+ OUT4- CD 2 4 6 8 10 12 14 16 18 20 22 24 P GND STBY VCC 2 P GND SVR IN 2 IN 4 AC GND P GND VCC 1 MUTE P GND 1 2 3 4 5 6 7 8 QUAL RDDA VREF MPX OSEL GND ARI FI 1 OUT 16 15 14 13 12 11 10 9 RDCL T57 OSCO OSCI VCC EXTRES TM F SEL 1 2 3 4 VSS 8 7 6 5 VCC

36、WP SCL SDA 161514131211109 REAR Lch+ REAR Lch- REAR Rch- REAR Rch+ NC PHONE NC B.U. FRONT Lch+ FRONT Lch- FRONT Rch- FRONT Rch+ P-ANT P-CON ACC GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 D OUT 12EJE SW LO/S SW MS CLK MSDA 8EJE SW N.C BU 5V D GND M MUTE N.C M RST M STOP AUDIO +B Lch

37、 GND Rch LO/EJ MO SW SERVO +B SERVO GND LOE/LIM SW 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 RF GND FM ANT AM ANT FM +B AM +B AM LO/DX FM LO/DX IF SELECT RDS OUT REQUEST K2I-VTH VCO GND FM SD OUT FSD OUT FM DET OUT AM DET OUT COMMON +B IF GND HI UP ADJ PLL CE PLL DATA PLL CLK P-

38、ON 5V DIG GND 4 BU 5V ILLUM SW 2 SW 1 11 12 10 9 VCC AUDIO +B AM +B FM +B 8 7 6 5 P-ANT P-CON GND 2 3 1 V BU 12345678 FUSE L1 FL+ FL- RL+ RL- RR- FR- RR+ FR+ 3300u16 + C1 82K R71 36K R72 100K R73 30K R10 10K R11 1K 2.2K R104 R105 470 R121 2.2K R107 2.2K R413 R412 R106 100K R108 2.2K R58 R110 R135R13

39、6 R137R138 R139R140 R113 47K R115 1KR116 10K R118 10KR117 1K R259 R119 47K 38 R114 47K 47K47K 47K47K 47K47K 4.7K VSS 4 32 VCC 1 10K CP1 C103 0.1 R125 1K CP3 1K2.2K CP2 R122 100 R67 10K R255 33K 47K 100K R126 R127 R128 R129 R130 15P C104 6.8K R131 15P C105 X1 2.2M 2.2K R123 1K 2.2K 2.2K 4.19MHz 22K R

40、134 59 54 57 58 55 56 52 47 41 64 66 63 61 1 5 6 9 10 15 14 11 12 13 20 22 21 27 40 39 2.2K R353 10P C356 10P C355 4.332MHz C352 330P 10u6.3 + C351 2.2K R351 2.2K R352 X2 + C353 10u6.3 0.01 C354 14 15 RL+ RL- FL- FL+ FR+ RR+ FR- RR- C253 0.22u50 4.7K R253 4.7K R252 1K R256 C252 0.22u50 R263 R261 R26

41、0 750 R258 3.6K R257 TH1 4.7K R254 0.22u50 C254 0.22u50 R251 C251 4.7K C256 + 1u50 C255 Q251 + RL RR FR 50 FL 39 CH CON B.U DATA C REQ H MUTE GND RST Rch A GND 8412 6A. GND 4 5MUTE CH-CON 12Lch CLK13 DATA C DATA H 10 11 2 3B.U GND 1REQ H Rch REQ C 8 9 RST7 7311 6210 519 DATA H REQ C CLK Lch 1113 13

42、1096 123 75 24 1 8 R404 100 R405 4.7K R406 4.7K R407 4.7K 4.7 10 R403 R402 R409 4.7K R401 10 R410 100 R411 100 R408 4.7K 100u10 + 1u50 + 1u50 + 7 5 19 28 16 63 18 17 10u16 C224 + 270 R224 100 R232 30K R228 100 R231 30K R227 10u16 C223 + 270 R223 RL RR 3 4 2 1 12 11 VDD 13 14 VSS 6 5 7 9 10 8 100K R4

43、15 0.01 C404 C40 0.01 R264 10u16 C53 C57 220u16 + 10u25 + C55 100u16 + C58 10u50 C56 + 10u16 + C54 10u16 + + C52 10u25 + C50 22K 47 4.7K R28 W166 W143 W179 W177 W141 W176 W178 W140 3.3K R20 10K R22 33K R21 1/2W 0.01 C21 100K R23 100K R12 47K R51 5.6K R50 52 4.7uH L101 L2 C102 0.01 + C101 100u6.3 1.5

44、K R57 + C63 22u16 47K R31 0.01 C30 22K R32 10K R30 4.7K R143 4.7K R141 66 55 SDA SCL 64 59 58 57 56 54 100K R144 4 3 2.2K R145 0.1 C142 0.01 C225 40 41 52mH L4 L303 4.7uH L304 4.7uH 0.01 C302 100u10 + C301 0.01 C303 AM FM 22 27 76 L305 0.01 C305 + C304 100u10 R301 2.2 9 20 10 L306 4.7uH 4.7uH 38 60

45、4.7K 19 18 17 16 28 6 53 42 50 42 76 4 R168 1K PANEL ESD-G L-DATAL L-DATAS REMO SW 5V L-CE L-CLK R165 470 R166 1K R167 100 R170 1K R164 470 R171 47 R172 1K 14 1511 12 13 8 9 10 12 61 11 13 6 LAMP +B LED +B RST L-RES PAN 5V ILL-GND D-GND R169 1K 4 5 6 7 2 3 10 R163 1 1 5 60 4 3 2.2u50 0.1 4.7K R203 A

46、M FM 4.7K R202 2.7K W21 4 3 SDASDA AFS 1514 MP OUT 0.1 OUT L LEVEL MP IN 13 12 C207 0.015 11 AM MPX 10 S MUTE 16 QUAL OUT R 17 18 SCL 19 SCL CD GND 7 7 8 9 PH- CDL 6 5 6 CDR 5 20 22 21 VDD GND 4 2.2u50 + R C204 + L OUT RL OUT RR 23 26 25 24 OUT FR OUT FL RL RR FR FL VREF CREF 1 C203 2.2u50 C205 2 +

47、28 AC OUT L AC OUT R 27 0.01 C202 C201 47u10 + SCL SDA 21 18 43 44 77 77 43 44 L201 4.7uH 0.47 C206R201 R101 240 53 R204 1K R205 4.7K 17 + C257 1u50 1u50 + C258 2.2K R103 C208 C210 0.033 C211 150P C209 + C306 10u10 C307 0.01 C309 0.01 100K 100K R102 C228 0.01 C402 C403 C401 100K R414 R132 C106 4700P

48、 R133 160K 2.2K 18 17 KEY KEY +B+B D12 D11 4.7K R25 0V 5V 0V 5V 0V 5V 5V 0V 0V 5V 0V 5V 0V 5V 0V 5V 5.0V 0V 5V 0V 0V 5V 5.0V 0V 0V 5V 0V 0V 5V 5.0V 0V or 5.0V 0V or 5.0V 0V or 5.0V 0V 5V 5V 0V 5V 0V 5.0V 0V 0V or 5.0V 0V 5V 0V 5V 5V 0V 5V 0V 5V 0V 0V 5V 0V 5V 0V 5.0V 0V 5.0V 5V 0V 0-4.0V 0.6-4.1V 2.

49、2-4.5V 5V 0V 5V 0V 2.4V 0V 5.0V 7.4V 7.3V 7.2V 7.2V 0V 0V 0V 0V 0V 0V 5.0V 5.0V 0V 0V 0V 0V 0V 0V 5.0V 0V 5.0V 0V 3VDD 1 4 VDD 1 3 5 7 10.3V 5.0V 14.3V 8.1V 7.9V 8.1V 14.0V 14.0V 0V 7.3V 0V 4.9V 14.4V 0V 7.2V 7.2V 0V 7.2V 7.2V 7.3V 7.3V 0V 7.3V 14.4V 3.4V or 4.1V 0V 7.4V 7.4V 1.0V 4.7V 0V 5.0V 0V 3.5V 8.2V 0V 4.0V 4.1V 4.1V 5.0V 0V 5V 0V 5V 5.0V 0V or 0V 0V IC1 IC4 IC6 IC12 A1 IC7 IC11 IC8 IC2 (X25-91XX-XX) KDC-4021/V/Y/YV (1/2) KDC-3020R (1/2) KDC-3021A/G/YA/YG (1/2) KDC-306A/G/YA/YG (1/2) KDC-2092RYA/RYG (1/2) KDC-2021SA/SG (1/2) C J2 CN1 Q70 D70 D10 Q10 RESET D101 RDS DECODER D267 D26