Kenwood-KCAR-70-FM-Service-Manual 电路图 维修手册.pdf

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1、 2002-8 PRINTED IN JAPAN B51-7967-00 (N) 1459 FM STEREO MODULATOR KCA-R70FM SERVICE MANUAL ANT. POWER INPUT DISP. INPUT INPUT CONTROLLER FM STEREO MODULATOR FREQUENCY:(MHz) 87.7/87.9/ 88.1/ 88.3 / 88.5 88.7/88.9 / 89.1/ 89.3 / 89.5 89.7/89.9 KENWOOD CORPORATION MADE IN JAPAN SRC PWR OFF SRCH/ MENU 1

2、23456 SCANRDMREPM.RDMDISP SIZE AAA BATTERY (NOT SUPPLIED) Panel assy (A64-3096-08) DC cord assy (E30-4733-08) Cord with plug (ANT) (E30-4310-08) Metallic cabinet (A01-2819-08) Cord with din connector (E30-4309-08) Remote controller assy (A70-2039-05) Unit holder (J19-5236-08) Accessory (W01-0763-08)

3、 RC-513 RadioFans.CN 收音机爱 好者资料库 2 BLOCK DIAGRAM CN101 DRIVER RESET Q101,201 ACC BATT GND DETECTION ACC (+6.6V) AVR u-COM IC2 IC1 CN1 Q1,6 Q4,5 VDD HOLD P ONPLL 54 31 67 8-133645 29,30,60 75,78 IC1 LCD DRIVER LCD1 15-18,27,56 96-100 CN101 CN1 1-70 RL1 CN105 RADIO To CN104 ANT IN Q310 MODE 1,2 CH-CONT

4、ROL Q306, RIPPLE FILTER 307 MIX PILOT STAGE RF IC301 MODULATOR FM-St. Q304,305 LEVEL CONTROL AUDIO MUTE Q309 ALC DETECTION IC302 AMP DRIVER ALC MPX EMPHASIS IC4 AVR(+5.6V) MODE 1,2 Q308 CD-CH 13P IC101 ISOLATION AMP. L.P.F. 2nd. IC102 +V(AUDIO) +V(RF STAGE) SIGNAL (L/R) CN102 KEY MATRIX71-75,77-80 V

5、DD IC2 REMOTE SENSER 85 84 +5.2V KCA-R70FM RadioFans.CN 收音机爱 好者资料库 3 COMPONENTS DESCRIPTION G RF MODULATOR UNIT Ref. No.Component NameAppication / FunctionOperation / Condition / Compatibility IC1UPC78M06AHFBU 5V AVRWhile BACKUP is applied, AVR outputs +5V. IC2LC72366-9B28System MI-COM.System contro

6、l IC4NJM78L05UA5V AVRPower supply for FM modulator and RF amplifier IC101NJM2060MIsolation amp. IC102NJM4565MDLow pass filter IC301BA1405FFM ST modulator IC302NJM4565MD 1/2 VCC driver, ALC detection amp. Q1DTC124EKACC detectionWhen Q4 is turned on , Q1 is turned on during ACC applied. Q22SA1782(T,U)

7、 POWER SW When Q3s base goes “Hi”, Q2 is turned on, and RF modulator circuit is Q3DTC124EKworking. Q4DTC143TKReset SW When RESET SW on display unit is pressed, Q4,Q1 and Q6 are turned off, and IC2 is holding. Q5DTC143TKCH RESET SW When RESET SW on display unit is pressed, Q5 is turned off, and SYSTE

8、M RESET signal is outputted to CD changer. Q6DTA124EKHold detection SW When RESET SW on display unit is pressed or ACC is OFF, Q6 is turned off, and IC2 is holding. Q8DTC143TKRelay driver FM modulator output / Vehicles antenna input switching. When a base goes “Hi”, FM modulator output is selected.

9、Q92SC4640(T,U)Ripple filterPower supply for RF amplifier Q1012SK2158 ALC control SW Q2012SK2158 Q3032SA1162(GR)Pilot mix amp. Q3042SK2158Level control SWLevel 1/2 : OFF, Level 3/4 : ON Q3052SK2158Level control SWLevel 2/4 : OFF, Level 1/3 : ON Q3062SK508LRF oscillator buffer Q3072SC2714(Y)RF amp. Q3

10、082SK2158Mode (1/2) SWMode1 : ON, Mode2 : OFF Q3092SK2158Audio mutePOWER ON mode : OFF, POWER OFF mode : ON Q3102SK2158Mode (1/2) SWMode1 : OFF, Mode2 : ON G CONTROL UNIT Ref. No.Component NameAppication / FunctionOperation / Condition / Compatibility IC1LC75808WLCD driver with key-matrix IC2RS-21NR

11、emote control light senser Q12SD2114KLED ON/OFF SW Q2DTA144EKKey-matrix permition SWReady on key-matrix Q3DTA144EKIC2 ON/OFF SW KCA-R70FM RadioFans.CN 收音机爱 好者资料库 4 MICROCOMPUTERS TERMINAL DESCRIPTION G SYSTEM MICROCOMPUTER (IC2 : RF MODULATOR UNIT) Pin No.Pin NameI/OTerminal nameDescriptionOperation

12、 in HOLD 1XINIX INX_tal- 2TEST2-GNDGround connection terminal- 35PG31ONCNot used (pull down to GND lines.)L 6PG0IGNDConnected to GND lines.- 7PF3ONCNot used (open)L 8PF2IREQCCD-Chenger REQC (Active “Low”)- 9PF1OREQHCD-Chenger REQH (Active “Low”)H 10PF0OCHCONCD-Chenger ONL 11SI2ICH_DATA_CCD-Chenger D

13、ATA in- 12SO2OCH_DATA_HCD-Chenger DATA outL 13SCK2OCH_CLKCD-Chenger DATA SCK (Active “Low”)H 14PE0ONCNot used (open)L 15PD3OLCD DATA outLCD Driver DATA outL 16PD2OLCD CLKLCD Driver CLK outL 17PD1OLCD RESETLCD Driver RESET outL 18PD0OLCD CELCD Driver CE outL 1926PC3PB0ONCNot used (open)L 27PA3ILCD DA

14、TA inLCD Driver DATA in- 2830PA20INCNot used (pull down to GND lines.)- 31VDD-Vdd5V- 32PQ0ONCNot used (open)L 3344PP3PN0OGAIN121Modulation output switchingL 45PM3OSEP-ATTWhen it has GAIN5 output, “Hi” outputL 4652PM2PL0ONCNot used (open)L 53PK3ORELAYAntenna relay control output terminalL 54PK2OP-onP

15、_ONL 55PK1OMUTEMute output terminal for the Tuner frequency changeL 56INT0IREMOCONRemote controller signal input 5760PJ30ONCNot used (open)L 6166PI1PH0INCNot used (pull down to GND lines.)- 67HOLDIHOLDACC detection (Operation in HOLD “Low”)L 68SNSIVddVdd- 69LCTRINCNot used (pull down to GND lines.)-

16、 70HCTRINCNot used (pull down to GND lines.)- 71EO3ONCNot used (open)Hi-Z 72SUBPDONCNot used (open)Hi-Z 73VDD-VddVdd- 74AMININCNot used (pull down to GND lines.)- 75FMINIVCO inVCO input- KCA-R70FM 5 Pin No.Pin NameI/OTerminal nameDescriptionOperation in HOLD 76VSS-VssVss- 77EO2ONCNot used (open)Hi-Z

17、 78EO1OError outPhase Detector Error outputHi-Z 79TEST1-NCNot used (pull down to GND lines.)- 80XOUTOX-outX-tal- G LCD-DRIVER (IC1 : CONTROL UNIT) Pin No.Pin NameI/OTerminal nameDescriptionOperation in HOLD 82P1OKEY-ONPANEL key matrix compulsory ON control terminalL 83P2ONCNot used (open)L 84P3OILLM

18、IDisplay panel illuminations Control terminalL 85P4OREMO-ONPower supply control terminal for remote controlH MICROCOMPUTERS TERMINAL DESCRIPTION ADJUSTMENT RF MODULATOR UNIT 1. DC balance adjustment (VR301) While observing the waveform with an oscilloscope at pin 13 of IC301, adjust VR301 to minimiz

19、e the waveform level. 2. PLL control voltage adjustment (VC301) First set the transmission frequency to *87.9MHz with the commander, then adjust VC301 so that the DC Voltage at the + pole of C317, measured using a multi-meter or digi- tal tester, is +3V (0.1V). * Note : E type is 87.7MHz. 3. Modulat

20、ion level adjustment (VR303) The method uses a standard receiver or tuner. Adjust VR303 so that the output level from the standard receiver or tuner is as specified. KCA-R70FM 6 ABCDE 1 2 3 4 5 6 7 PC BOARD (COMPONENT SIDE VIEW) D6 C10 D9 D1 D7 D10D12D13 D14D15 D16 D2 CN1 LCD1 D11 D8 D4 D3 D5 IC2 C9

21、 19 681 43 12 CONTROL UNIT E B Q2 E B Q3 D22 R34 C11 R5 R3 C3 R4 C1 R21 R22 R8 R23 R20 R9 R15 R14 R13 R12 R11 C8 R37 R10 R2 R27 C2 C5 C6R24 C4 C7 R7 R1 R25 R19 R18 R17 R16 R6 B E Q1 R36 R29 R30 R31 R33 R32 R26 R35 R28 D23 IC1 D20 D21 D19 D18 D17 125 26 50 5175 76 100 CONTROL UNIT CONTROL UNIT ICQAdd

22、ress 14D 15D 23D 36C Refer to the schematic diagram for the values of resistors and capacitors. (FOIL SIDE VIEW) CONTROL UNIT ICQAddress 27C 7 FGHIJ 1 2 3 4 5 6 7 R102 R103 C103 R106 R108 C212 R215 R18 R214 R109R210 R314 R328 C305 R35 C302 C303 C10 C304 C336 J45 C335 R316 C310 C312 R308 C320 R327 C3

23、19 C323 L301 L302 C327 EB SD G E B OGI L304 C331 R335 C333 C334 R34 C35 C329 R332 C332 R333 R326 C322 C318 R325 R334 R323 C316 R337 C338C324 C325 L303 R330 C328 R331 C330 L305 R338 R329 R317 R346 R318 C2 R320 R27 R28 R302 R348 C308 R301 C306 R307 R306 R112 C108 C109 C110 R113 C209 R114 C112 R115 R20

24、3 C203 C339 R202 R107 R014 R105 C113 C114 R116 C107 C207 C214 C213 R216 R343 R209 C208 R212 C210 R213 C12 C11 R340 R339 R110 R111 R205 R204 R207 C16 R19 R16 R15 R20 R11 J15 J13 X301R319 R1 J38 J39 J40 R7 J50 J49 J48 J47 J46 J42 J51 R322 RD P2 BK L1 R9 J43 J44 R23 R12 J57 R25 R26 R24 R22 R21 J10 R17

25、C17 C14 C8 R14 J4 8746 31 14 85 912 13 25 C15 C13 R6 C9 R33 R31 R208 R206 J55 J3 J1 RD J6 R13 J56 J16 J61 J59 J36 J27 C31 J26 X302 J24 C106 C206 C314 C111 C301 C211 J25 C32 VR301 J28 R350 J58 J31 C340 C315 C317 C321 VC301 C326 P1 C20 J32 VR303 C19 J33 J62 J35 J52 RL1 R8 C33 C30 BE BE C1 C24 J53 YL 1

26、2 12 13 J37 BRK1 WT J11 J20 J21 J54 J41 C7 C3C6 R2 J23 IGO J22 C34 C204 C205 C105 C104 D101 D201 Q308 Q201 Q101 Q303 Q305 Q304 Q310 Q309 D302 Q306 Q307 MODULATOR UNIT 17 814 IC101 14 58 IC102 1 1 4 85 1 2425 40 41 6465 80 9 1018 IC301 IC302 IC2 IC1 D303 D304 D305 D306 VD301 SG EB SG D D D SG S G D E

27、 B B EB E B E B E SG S D D G S G D Q8 D12 IC4 Q3 Q6 Q5 Q1 Q4 CN102 ZD3 ZD6 ZD7 ZD4 D16 ZD5 D8 D2 W2 W1 CN1 D1 D15 ZD1 Q9 CN105 Q2 D5 D13 CN104 D14 D9 W1 INPUTDISP INPUT W2 ZD2 CN101 J8 J9 PC BOARD (FOIL SIDE VIEW) MODULATOR UNIT ICQAddress 14F 24G 47G 1012H 1023I 3014H 3025I 14F 26G 35G 44F 54F 64F

28、87G 96G 1013I 2013H 3034I 3045H 3055H 3066I 3076H 3083H 3095H 3105H Refer to the schematic diagram for the values of resistors and capacitors. ABCDE 1 2 3 4 5 6 7 22K 22K 4.7K4.7K 22K 22K 22K 22K 14.4V 12.4V6.7V 0.6V 5.3V 12.6V 6.4V 6.4V 6.4V 6.4V 6.4V6.4V 6.4V 6.4V 12.6V 6.4V 6.4V 6.4V 6.4V 6.4V 0V

29、 6.4V 6.4V 12.6V 0V 6.4V 6.4V 3.6V 3.6V 0V 1.9V 1.7V 0.9V 3.6V 3.6V 3.6V 4.2V 3.2V 4.1V 3.7V 4.5V 4.8V 5.6V 5.6V13.6V 0.6V 2.5V IC1 IC301 IC4 MODULATOR UNIT ZD1D2 D5 Q1 D1 D15 D303 D16 Q6 D305D304D306 Q4Q5 CN101 (4/4) D101 IC101 (3/4) IC101 (1/4) D201 IC101 (2/4) IC101 (2/2) Q308 Q101 Q201 IC102 IC1

30、02 (1/2) (1/2) IC302 D302 Q310 Q303 D9 Q2 Q3 D8 D14 D13 Q9 CN1 I I I I I I IC302 (2/2) BU 5V AVR ISO L.P.F. 5V AVRRIPPLE FILTER FM ST MODULATOR 80 79 78 25 26 27 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 XOUT TEST1 PB1 PB0 XIN TEST2 PG3 PG2 PG1 PG0 PF3 PF2 REQC PF1 REQH PF0 CHCO

31、N CI2 CH DATA C SO2 CH DATA H SCK2 CH CLK PE0 PD3 LCD DATA PD2 LCD CLK PD1 LCD RESE PD0 LCD CE PC3 PC2 PC1 PC0 PB3 PB2 4.5MHz X302 22P C11 22P C12 13 10 11 12 8 9 18 15 16 17 1000P C8 1K R11 10K R12 27 ACC GND BATT 4.7u50 C3 + 2.2K R2 2.4K R1 L1 C33 1000u16 + 1000u16 C1 + OUT GND IN 10u16 C6 + C7 1u

32、50 + 22K R6 5 8 21 43 76 GND REMOCON DATA IN RESET CE DATA OUT RESET CLK +6.6V 1K R25 1K R26 1K R22 1000P C13 1000P C17 1000P C16 1000P C15 LCD LCD LCD 1K R23 1000P C14 4.7K R24 17 16 18 15 27 220u10 0.01 C103 6.8K R103 1.5K C339 0.1 10K R104 C105 + 10u16 + 12 13 4 11 14 R102C104 R105 1u50 C34 R108

33、10K R107 10K 10K 9 10 + 8 R106 220u10 0.01 C203 6.8K R203 1.5K 10K R204 + 10u16 3 2 1 R202C204 R205 R208 10K R207 10K 10K 6 5 7 R206 C205 + R G L 5 6 8 7 0.015 C114 180P C113 3300P C112 6.8K R115 6.8K R114 6.8K R116 1.8K R109 10u16 + C106 390 R339 100 R343 75K R112 1000P C108 R110 390 C107 270P R111

34、 1K 0.1 C110 0.1 C109 100K R113 1u50 + C111 R210 390 C207 270P 3300P C212 180P C213 3 2 1 4 R216 6.8K6.8K R215R214 6.8K C214 0.015 1u50 C211R212 75K10u16 C206 1.8K R209 1000P C208 C210 C209 0.1 100K R213 0.1 390 R340 3 2 1 10K R306 10K 10K 10K R27 R28 10K 100u10 C19 + 5 6 8 4 7 0.033 C308 4.7K R307

35、C310 R308 150K 33P C312 0.01 0.22u50 C314 + 47K R314 220u25 C20 + 18 17 16 15 14 13 12 11 10 LIN VCC MPX PILOT 1 2 3 4 5 6 7 8 9 RIN GND OSCIN OSCIN OSCOUT 10u16 C301 + C302 0.01 38kHz C303 220P X301 C304 10P VR301 33K 220K R348 220P C306 150K R301 12K R302 270 R328 R316 1.2K 2200P C336 4.7u50 + C33

36、5 2.4K R317 R346 4.7K C305 0.01 100u10 C32 + R318 47K R31 22K R8 2.2K R9 C2 0.022 2W R7 10 47K R33 3 45 7 OUT GND IN 470u16 C24 + C35 0.01 1.8K R34 1000u10 C30 + 3A F1 3A F2 150 R35 PA3 1 2 3 + KCA-R70FM JIHGF 1 2 3 4 5 6 7 4.7K 5.3V 4.0V 4.8V 5.6V 5.2V 0V 0V 5.3V IC2 KCA-R70FM (1/2) A CN102 ZD2 ZD3

37、 ZD5 ZD4 ZD7 ZD6 Q310Q304Q309Q305 VD301 Q306 Q307 CN105 RADIO to CN104 ANT IN RELAY D12 Q8 Q9 IC101 IC102,302 IC1 IC4 IC2 IC301 Q1,3 Q6 Q4,5,8 Q101,201,304,305,308-310 : : : : : : : : : : 2SK2158 BA1405F LC72366-9B28 NJM78L05UA UPC78M06AHF NJM4565MD NJM2060M Q22SA1782(T,U): Q92SC4640(T,U): 2SK508LQ3

38、06 Q307 Q303 2SC2714(Y) 2SA1162(GR) : : : D101,201,302 VD301 ZD1-7 D8,9,12,13,16 D1,2,5,14,15 DA204K HZS6C2: : : DSK10C-ET1 1SS133: : B LINE SIGNAL LINE GND LINE DTC124EK DTC143TK DTA124EK HVU306A-3 1/2 CN1 UNIT CONTROL to CHANGER RIPPLE FILTER u-COM RF AMP SCK RESET CD POW BATT REQ C OUT S GND GND

39、(D) REQ H DATA IN 13 Lch Rch 37 48 11 12 915 2610 E 3.3K R14 R17 1K 3.3K R16 3.3K R19 R21 4.7K 1K R20 R15 100K 100K R18 100K R13 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 HOL

40、D XOUT TEST1 ERROR OUT EO1 EO2 VSS VCO IN FM IN AM IN VDD SUBPD EO3 HCTR LCTR SNS PH0 PH1 PH2 PH3 PI0 PI1 PJ0 PJ1 PJ2 PJ3 REMOCON INT0 MUTE PK1 P-on PK2 RELAY PK3 PL0 PL1 PL2 PL3 PM0 PM1 PM2 SEP-ATT PM3 GAIN9 PN0 GAIN10 PN1 GAIN11 PN2 GAIN12 PN3 PB1 PB0 LCD DATA IN PA2 PA1 PA0 VDD +5V PQ0 PP3 GAIN8

41、PP2 GAIN7 PP1 GAIN6 PP0 GAIN5 PO3 GAIN4 PO2 GAIN3 PO1 GAIN2 PO0 GAIN1 XIN TEST2 PG3 PG2 PG1 PG0 PF3 PF2 REQC PF1 REQH PF0 CHCON CI2 CH DATA C SO2 CH DATA H SCK2 CH CLK PE0 PD3 LCD DATA OUT PD2 LCD CLK PD1 LCD RESET PD0 LCD CE PC3 PC2 PC1 PC0 PB3 PB2 5MHz X302 22P C12 78 75 0.01 C10 CD LCD 0.047F5.5

42、+ C31 0.01 C9 1000P C8 1K R11 10K R12 13 10 9 11 8 12 DATA u50 35 2.4K R317 R346 4.7K 3.3K R318 10K R319 1.2K R320 10K(B) VR303 22u10 + C340 10K J29 180P C320 47K R327 1u50 + C321 4.7K R322 4.7K R334 22K R325 2.2u50 C317 + 100u10 C315 + 470 R323 20P VC301 220P C322 220nH L301 4.7K R337 0.01 C325 47u

43、25 + C326 15P C324 2P C328 5P C332 47 R333 120nH L305 4.7K R338 1P C331 C316 0.01 C318 0.01 R326 22KC338 5P C319 0.01 C327 15P R330 330 L303 2.2uH R331 47K C329 15P L304 220nH R332 100 C330 0.01 C333 33P C334 33P 68P C323 L302 2.2uH R329 47 L G R 75 53 53 39 40 36 45 36 39 40 55 45 55 78 7 8K 34 100

44、0u10 C30 + MUTE 3300u16 C36 + RL1 PA3 1 2 2 1 DTA124EK DTA144EK DTC124EK DTC143TK 2SA1162 2SC2714 2SD2114K NJM4565MD DA204K NJM2060M BA1405F NJM78L05UA CAUTION : For continued safety, replace safety critical components only with manufacturers recommended parts (refer to parts list). Indicates safety

45、 critical components. To reduce the risk of electric shock, leakage-current or resistance measure- ments shall be carried 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

46、. Values may vary slightly due to variations between individual instruments or/and units. KLMNO 1 2 3 4 5 6 7 47K 47K 47K 47K 6.7V LCD1 IC1 IC2 CONTROL UNIT KCA-R70FM (2/2) A CN1 Q2 D19D18D17 D21 D20 RESET SRC DISP5643 21- VOL+VOL-EJECT D23D22 Q3 Q1 D13 D15 D9 D11 D5 D7 D4 D10 D12 D16 D14 D8 D6 D1 D

47、2 D3 RDM REP SCAN ABGCDEFIHKJL GND LINE B LINE IC1 IC2: : RS-21N LC75808W 2SD2114K Q2,3 Q1 : : DTA144EK B30-1564-05 B30-1663-05 D3 D1,2 : : B30-1566-05D4-16: DA204KD17-21: D22,23MA111: 1/2 UNIT CN101 MODULATOR REMO. SENSOR LCD DRIVER 1 2 3 4 5 6 7 8 9 GND OUT RESET +6.6V REMO RESET CE CLK DATA IN KS

48、6 74 51 COM8 S57 S52 S51 S53 S55 S56 S54 S60 S58 S59 COM2 COM5 COM7 COM6 COM4 COM3 KS1 KS3 KS2 COM1 COM8 S57 S54 S56 S55 S51 S53 S52 54 53 52 55 56 57 COM9 S59 S58 S60 COM10 59 58 60 61 62 63 COM2 COM4 COM3 COM7 COM6 COM5 64 65 66 69 67 68 KS3 KS2 COM1 KS1 70 71 73 72 KS5 KS4KS4 KS5 75 REMO-ON P4 S2

49、S2 30 S46 S50 S49 S48 S47 S43 S45 S44 S42 S41 S35 S40 S39 S38 S37 S36 S32 S34 S33 S31 S30 S40 46 49 S50 S49 50 S48 S47 S46 48 47 S43 S44 S45 45 44 S41 S42 43 42 41 35 38 S38 S39 40 39 S37 S35 S36 37 36 S32 S33 S34 34 33 S30 S31 32 31 S29 S28 S27 S26 27 S29 S27 S28 29 28 S26 26 14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 20 23 24 25 21 22 S24 S25 S23 S22 S21 17 18 19 15 16 S20 S19 S18 S17 S16 S15 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S8 11 12 13 8 9 10 S14 S13 S12 S11 S10 S9 7 5 6 4 2 3 S5 S7 S6 S4 S3 95 78 KI1 KI2 77 76 KI3 79 R16 1K KI1 KI2 R18 1K R17 1K KI3 KEY-ON P1 KI5