Kenwood-KMD-44-Service-Manual 电路图 维修手册.pdf

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1、 2001-2 PRINTED IN JAPAN B51-7737-00 (N)1529 MD RECEIVER KMD-44 SERVICE MANUAL MDLP LOUDSCANROMREPM.ROMD.SCN AUTO AMECLKNAME.S DISC MENU 45Wx4 KMD-44 PWR SRC DISC OFF AM FM AUD CD MD-CHANGER CONTROLMD RECEIVER Plastic cabinet assy (A02-1486-13) Screw set (N99-1610-15) DC cord (E30-4783-05) Stay (J54

2、-0606-04) Screw set (N99-1632-05) Lever (D10-3031-04)x2 Mounting hardware assy (J21-9491-13) Front glass (B10-4030-01) Escutcheon (B07-2181-02) Panel assy (A64-2261-02) RadioFans.CN 收音机爱 好者资料库 KMD-44 2 BLOCK LEVEL DIAGRAM SDA SCL AFS SCL SDA SD S-METER REMO L DATAS L CLK L CE L DATAL L INH MD +B SW

3、5V P-ON ILL ON LOE SW EJ LO LOS SW M STOP M RST A MUTE M SDA M SCL PANEL DATA C REQ H DATA H CLK MUTE REQ C AM +B FM +B MUTE VDD BU DET. ACC DET. PHONE P-ANT P-CON LOS SW LOE SW LO EJ M SDA A MUTE M RST M STOP M SCL AUDIO BU 5V S 5.0V AUDIO 8V MUTE AUDIO FM,AM CH SCL OUT MD VDD SDA AFS VDD PLL +B FM

4、 +B AM +B SCL IF2 +B AUDIO IF1 +B S-METER SD SDA CLK REQ C MUTE DATA H DATA C REQ H AUDIO SW 5V 8V P-ANT P-CON TEL MUTE ACC BACK UP PRE OUT SP OUT AUDIO BU 14V 3529mV 3529mV 588mV 1819mV 3795mV 3795mV 380mV 1200mV 1200mV 1200mV 724mV 1200mV 170mV166mV 1692mV(J,K) 547mV(J,K) BU 5V Q1,2 Q10 Q11-15 IC6

5、 IC3 Q7-9 IC1 IC8 IC1 IC2 IC2 Q25-28 IC4 Q17,18 AVR SW-REG S 5.0V ILLUM +B AVR AVR AUDIO 8V u-COM MD MECHA P-ANT P-CON ACC DET. BU DET. TEL MUTE MUTE PRE OUT E-VOL F/E FM +B AM+B POWER IC CD/MD CH KEY MATRIX WITH LCD DRIVER SW 5V REMOCON LCD PANAEL MD MECHA CD-CH AM FM E-VOL PRE OUT ATT PRE OUT LEVE

6、L ANT 5V REG REAR LEVEL DIAGRAM BLOCK DIAGRAM RadioFans.CN 收音机爱 好者资料库 1 2 4 5 6 7 8 9 3 15 14 I J A B C D E F 11 12 22 23 25 41 42 19 APC APCREF EQADJ 3TADJ WBLADJ FZC RF AUX1 AUX2 PEAK BOTTOM ABCD FE VC SWDT SCLK XLAT FOCONT 114 113 84 85 77 76 112 111 SPFD SPRD FFDR FRDR TFDR TRDR SFDR SRDR 25 28

7、5 34 15 21 20 MNT0 MNT1 MNT2 MNT3 XINT SQSY SENS SRDT SCLK SWDT XLAT XRST 44 45 46 62 18 20 19 17 16 FZC XINT SQSY SENS SRDT SCLK SWDT XLAT XRST 12 56 23 11 15 13 14 43 36 59 60 LDON SDMUTE LIMIT SW P-ON AMUTE MSDA MSCL MSTOP MRST TYPE 1 TYPE 2 33 7 8 HOT ESDA ESCL 20 19 17 16 29 30 23 22 26 25 24 3

8、2 33 TRK+ TRK- FCS+ FCS- SLED+ SLED- SPDL+ SPDL- VC VREF0 VCC2 VCC1 LOAD EJECT 10 11 12 13 6 7 8 9 28 27 3 14 5 TFDR TRDR FFDR FRDR SFDR SRDR SPFD SPRD REG IN REG OUT ENREG LOAD EJECT 11 10 8 13 12 19 18 14 17 4 5 1 20 21 6 7 A8V L-CH R-CH MRST MSTOP MSCL (IIC BUS) MSDA AMUTE BU5V S5V S5V LOE-SW LOS

9、-SW DET-SW LOAD EJECT 36 30 29 31 34 35 37 33 38 47 46 48 40 10 28 26 32 17 18 20 27 16 41 40 MORFRFO AUX 1 FOCONT XSTBY ADFG 22.58MHz 6 7 8 35 16 14 13 10 9 11 104 105 106 107 102 84 93 80 81 82 83 67 73 72 71 70 85 92 91 5 11 13 3 1 12 2 10 6 4 8.38MHz 4 MUTE 1 MUTE 2 1 2 MUTE 3 36 CH1,2 CH3 CH4 2

10、 1 67 SW+5V DAVDD AUDIO +B JITTER RECORD IN VC TE SE VC VC VC VC PD LD STBY TO CH5 OP S+B SW+5V S5V +3.3V +2.5V 6 5 BU+5V 1.2V rms 1KHz 0dB SW+5V TO SERVO DRIVER BU+5V ILCC LDON RF AMP RF AGC & EQ RF AMP CXA2523AR BPFP-P PEAK & BOTTOM ABCD AMP IV AMP IV AMP CVB AMP TEMP VICCONV ERROR AMP FOCUS AT AM

11、P BPF TRACKING ERROR AMP SERIAL PARALLEL DECODER BALANCE E-F FILTER PLL DECODER ACIRC EFM MEMORY RESISTANT SHOCK CONTROLLER DYNAMIC RAM ATRAC3 ATRAC/ DECODER DIGITAL FILTER DIGITAL AUDIO I/F CONVERTER D/A POST FILTER CONTROL MONITOR ANALOG MUX ADIP DEMODULATOR DECODER SPINDLE SERVO GENERATOR PWM APC

12、 DSP SERVO CONVERTER A/D CLOCK GENERATOR AUTO SEQUENCER I/F CPU PROCESSOR SUBCODE TC74HCT7007AF MECHA u-COM UPD780076YGK CH2 DRIVER CH1 DRIVER DRIVER CH4 DRIVER CH3 VREF DRIVER CH5 NJM4565MD LPF SW+8V A3.3V REG. LIMIT SW LOE-SW LOS-SW DET-SW ATRAC/ATRAC3 DECODER DET. REFLECT APC C B D A F E JI DETEC

13、TOR TRACKING COIL FOCUS COIL M SLED MOTOR SPINDLE MOTOR M LOADING/EJECT MOTOR M THERMISTER EEPROM BR24C02FV-W 256 8BIT S-817A25ANB SW+5V EFM/ACIRC DECODER SHOCK PROOF MEMORY CONTROLLER DIGITAL SERVO PROCESSOR DIGITAL SIGNAL PROCESSOR 1M-WORD 4BIT DYNAMIC RAM DIGITAL FILTER. D/A CONVERTER CDX2667R FO

14、CUS/TRACKING COIL DRIVER SPINDLE/SLED MOTOR DRIVER LA6572 LOADING/EJECT MOTOR DRIVER IC1 Q1 IC4 Q3 REG. 2.5V IC2 IC11 IC9 IC5 IC8 LP2982-3.3 Q10 IC12 Q13 Q7 MOTOR ASSY KMS-242B OPTICAL PICKUP BLOCK MOTOR BLOCK X33 UNIT 34 KMD-44KMD-44 BLOCK DIAGRAM (MD) RadioFans.CN 收音机爱 好者资料库 5 KMD-44 COMPONENTS DE

15、SCRIPTION Ref. No.Component nameApplication/FunctionOperation/Condition/Compatibility IC1LC75808WLCD driver with key-matrix IC2RS-171Remote control light sensor Q1DTA114EK or UN2111Key-matrix permission SWReady on key-matrix, ON when the base goes Lo. Q22SD2114KIllumination SW(Red)ON when the base g

16、oes Hi. Q32SD2114KIllumination SW(Green)On when the base goes Hi. Q42SC2412K or 2SD601ALCD AVR Ref. No.Component nameApplication/FunctionOperation/Condition/Compatibility IC1UPD784216GF531System MI-COM. IC2TDA7407DE-VOL. & N.C. MPX IC3M5237MLAVR IC AVR IC is combined with Q5, and it works as the err

17、or detection, the driver. IC4TDA7386Power IC IC6LM2595S-ADJMD SERVO AVRA DC/DC Converter wiht the ON/OFF function. IC7S-80830ANNPReset ICL : detection voltage below 3.0V IC8HD74HC27FPMute logic3 input NOR gate x3 IC10TDA7479DRDS decoder Q12SC4081 or 2SD1819A BU 5V AVR Inverted darlington connection

18、Q22SB1548(P)or 2SB1655(E, F)On during BU applied. Q3DTA124EUA or UN5112 Audio 8V AVR ON/OFF control Q4 DTC144EK or UN2213 Audio 8V AVR ON/OFF SW Q3 is turned ON when Q4s base goes Hi. or KRC104S Q52SB1548(P)or 2SB1655(E, F)Audio 8V AVROutput voltage 8.3V Q7DTC144EUA or UN5213 Q8DTA124EUA or UN5112Il

19、lumination AVRAVR output is ON when Q7s base goes Hi. Q92SD1760 Q102SA1037KSW 5VON when the base goes Lo. Q132SB1277(Q, R) Q16 DTC114YK or UN2214 P-CON SWQ13 is turned ON when Q16s base goes Hi. or KRC107S Q142SA1037KProtect Q13 by turning ON when P-CON output is grounded. Q15 DTA124EK or UN2112 P-C

20、ON protection Prevents Q14 turning ON during start-up after power ON. or KRA103S Q172SC2412K or 2SD601A BU detection ON when the base goes Hi during BU applied. (Momentary power down detection) Q182SC2412K or 2SD601AACC detectionON when the base goes Hiduring ACC applied. Q19 DTA124EK or UN2112 Mute

21、 driver for Audio mute SWON when the base goes Lo. or KRA103S Q20 DTC144EK or UN2213 E-VOL. mute SWE-VOL. is muted when the base goes Hi. or KRC104S Q21, 22 DTC143TK or UN2216Audio mute SWAudio pre-outs are muted when the base goes Hi. Q23DTC114YK or UN2214SVR SWPOWER IC RESET is activated when the

22、base goesHi. Q24DTA114YUAor UN5114Panel detection SWON when the base goes Lo during the panel closed. Q25 DTC124EK or UN2212 or KRC103SFM+B SW Q26 is turned ON when Q25s base goes Hi. Q262SB1277(Q,R) ON during FM reception Q27 DTC124EK or UN2212 Q28 is turned ON when Q27s base goes Hi. or KRC103SAM+

23、B SW Q282SB1277(Q,R) ON during AM reception Q292SC4081 or 2SD1819AComposite signal output buffer Q302SC4081 or 2SD1819ANoise buffer Q33 DTC144EK or UN2213 RESET SW System RESET is activated when the panel reset SW or KRC104Sis pushed Q342SC4081 or 2SD1819ADSI driverON when the base goes Hi. GSWITCH

24、UNIT (X13-9700-11) GELECTRIC UNIT (X25-8840-11) 6 KMD-44 COMPONENTS DESCRIPTION Ref. No.Application/FunctionOperation/Condition/Compatibility RF amplifier (Pit-groove switching, AGC, EQ Gain switching, I-V Amp, IC1RF Matrix Amplifier for MDlight amount signal output, Peak-hold output, Bottom-hold ou

25、tput, FE output, TE output, SE output, ADIP dual-value output, Vref output, APC PD amplifier, FZC generation comparator EFM decoding, EFM digital PLL, ACIRC decoding, Automatic LINK processing IC2Digital signal processor for MDADIP decoder, Memory control, Digital servo, (focus, tracking thread, spi

26、ndle CLV), 1 bit D/A, ATRAC/ATRAC3 decoding, 4M(1Mx4) DRAM Analog post filter IC3+2.5V regulatorPower supply for 2.5V system of IC2 IC45chBTL servo driverVarious actuator, Motor drive, Disk loading, Eject motor driver, +3.3V regulatore IC5low-pass filter3-times active filter IC63.3v regulatorD/A aud

27、io+B IC7CMOS buffer3.3V/5.0V level shift IC8Mechanism miconServo control, Memory, control, System control, Various interfaces IC9E2PROMServo coefficient, Servo adjustment data backup memory Q1APCIC1, IC2 APC ON and ON while Q2 is OFF Q2LD SWON when laser is OFF (when micro com LDON L) Q3Detection of

28、 disk reflection amountON when focus is passed during UP search Q4+3.3V regularON when SW+5V H (when Q7 is ON) Q5A+8V SWON when Q6 is ON Q6SW for SW+8VON when SW+5V H (When Q7 is ON) Q7PON (SW+5V)ON when Pin 11 of IC8 is L GMD Unit (X33-3120-00) KMD-44 7 System -com: (X25 : IC1) GTerminal Descriptio

29、n MICROCOMPUTERS TERMINAL DESCRIPTION PinNameI/OFunctionDescription of Processing 1TYPE 0IDestination type input terminal 0Pull down to GND 2TYPE 1IDestination type input terminal 1Pull down to GND 38N.C.ONot used 9VDD-VDD connection terminalConnected to BU 5V lines 10STBYOPower IC standby control o

30、utputHi:POWER ON mode 11SVROPower IC reset terminal When the momentary power down, after ACC OFF is detected and after POWER OFF, the output goesHi temporarily. 12N.C.ONot used 13P-MUTEOPower IC mute controlLo:Mute 14ANT-CONOAntenna controlHi:during FM/AM reception 15IC2-SCKOClock output to the E-VO

31、L. IC 16N.C.ONot used 17P-CONOPower controlHi:POWER ON mode except ALL OFF mode 18ACC-DETIACC detection inputHi:ACC OFF, Lo:ACC ON 19REMOIData input from the remote control light sensor 20P-ONOA.8V AVR ON/OFF control terminalHi:POWER ON mode or during MD Loading/Eject 21BU-DETIMomentary power down d

32、etection input Hi:When momentary power down detected or BU OFF, Lo:BU ON 22TSET-Not usedConnected to GND 23IC2-SDAI/OData input/output with the E-VOL. IC 24MUTEOMute control outputHi:Mute ON, Lo:Mute OFF 25SW5OSW 5V controlLo:POWER ON mode or during MD Loading/Eject 26M-CLKI/OClock input/output with

33、 the MI-COM. of MD mecha. 27M-DATAI/OData input/output with the MI-COM. of MD mecha. 28IC3-SDAI/OData input/output with the F/E(tuner) 29CHCONOChanger controlLo:Standby, Hi:during the movement 30IC3-SCKOClock output to the F/E(tuner) 31REQHORequest output to changersLo:Request 32ILL-ONOIllumination

34、AVR ON/OFF control terminalHi:POWER ON mode 33DSIODSI output terminalNot used 34, 35N.C.ONot used 36MD+BOMD servo +B ON/OFF control terminalHi:MD source is selected or during MD Loading/Eject 37VDD-VDD connection terminalConnected to BU 5V lines 38X2-Main clock resonator connection terminal 39X1IMai

35、n clock resonator connection terminal 40VSS-Ground connection terminalConnected to GND 41XT2-Sub clock resonator connection terminal 42XT1ISub clock resonator connection terminal 43RESETIReset input terminalLo:System reset 44N.C.ONot used 45R-CLKIClock input from RDS decoderNot used 46REQ CIRequest

36、input from changersHi:Request 47KEY-REQIKey request terminalLo:Request 48N.C.ONot used 49LOS-SWIMD insertion detection terminalLo:MD insertion detected KMD-44 8 PinNameI/OFunctionDescription of Processing 50N.C.ONot used 51AVDD-VDD connection terminalConnected to BU 5V lines 52AVREF 0- VDD connectio

37、n terminal Connected to BU 5V lines (A/D converter reference voltage input) 53PHONEIPHONE detection inputNot used 54N.C.I Not usedConnected to GND 55NIOSEINoise detection input 56S-METERIS-meter input from the F/E(tuner) 5759N.C.INot usedConnected to GND 60M-MUTEIMute request from the MI-COM. of MD

38、mecha.Lo:Mute requested 61AVSS-Ground connection terminal(A/D, D/A converter)Connected to GND 62N.C.ONot used 63M-RSTOReset output to the MI-COM. of MD mecha.Lo:Reset 64AVREF 1- VDD connection terminal Connected to BU 5V lines (D/A converter reference voltage input) 65DATA CIData input from changers

39、 66DATA HOData output to changers 67CH-CLKI/OClock input/output with changers 68L-DATALIData input from the LCD driver IC 69L-DATASOData output to the LCD driver IC 70L-CLKOClock output to the LCD driver IC 71M-STOPOStop request to the MI-COM. of MD mecha.Lo:Stop, Hi:during the movement 72BEEPOBeep

40、sound output 7375N.C.ONot used 76LOE-SWIMD loading complete detection SW input terminalLo:MD loading completion 77EJECTOMD mecha. Loading/Eject switching output terminal Standby:(EJECT, LOAD)=(Lo, Lo) Eject:(EJECT, LOAD)=(Hi, Lo) 78LOADOMD mecha. Loading/Eject switching output terminal Loading:(EJEC

41、T, LOAD)=(Lo, Hi) Brake:(EJECT, LOAD)=(Hi, Hi) 79L-INHOINH output to the LCD driver ICHi:Active, Lo:LCD indication OFF 80L-CEOCE output to the LCD driver ICHi:Active 81PANELIPanel detaching detection inputLo:Panel not detached 82, 83N.C.ONot used 84QUALIQuality input from RDS decoder 85R-DATAIData i

42、nput from RDS decoder 86, 87N.C.ONot used 88SDISD input from the F/E(tuner)Hi:Station detected, Lo:Not detected 8991N.C.ONot used 92AFCONoise detection time constant switching terminalNot used 9395N.C.ONot used 96AM+BOAM+B controlHi:during AM reception 97FM+BOFM+B controlHi:during FM reception 98ST

43、TYPE 0IIC2 stereo data setting terminalLo:Initial value 99ST TYPE 1IIC2 stereo data setting terminalLo:Initial value 100VSS-Ground connection terminalConnected to GND MICROCOMPUTERS TERMINAL DESCRIPTION 9 KMD-44 ADJUSTMENT TEST MODE 1. To enter test mode While holding the FM key and preset 6 key, re

44、set the unit. All indication segments are ON at the beginning of test mode. 2. To relese test mode Simply reset the unit. (NOTE) The test mode is not canceled by ACC OFF, power OFF, momentary power down. 3. MD receiver test mode specification Pressing the Track Up key jumps between tracks in the fol

45、lowing order. No.7 / No.2 / No.13 / No.23 / No.30 / No.34 / No.7 (Same as the beginning) Pressing the Track Down key jumps to the pre- vious track to the being played. Pressing the preset 1 key jumps to No.28 track. Again pressing the preset 1 key jumps to No.22 track. 4. Audio adjustment The volume

46、 is set to -10dB (which is shown as 30). Loudness is OFF. CRSC becomes OFF regard- less of the functional excuse, too. The BASS/TREBLE and BALANCE/FADER controls can be set to the full boost/full cut and full front/full rear and full right/full left respective- ly by pressing the Track Up / Track Do

47、wn keys. Sound coordination (system Q) doesnt appear for the Audio mode feed. MDS-2500 Service Test Mode (Manual Adjustment Mode) In order to adjust the focus bias (balance) of MDS-2500, automatic adjustment is conducted at factory and bias value is written on the E2PROM. When conducting adjustment

48、on the set, the data in the E2PROM is read. Therefore, when changing the pickup for servicing, it is necessary to conduct focus bias adjustment again. If you are equipped with MDS-2000 AT3 Commander and jitter meter, it is possible to use automatic adjustment. We have prepared the service test mode

49、(manual adjustment mode) in case MDS-2000 AT3 Commander and jitter meter are not available. G Adjustment Procedure (Note: During the adjustment procedure, be sure to turn off the power supply to the set.) 1. Pull up the IC11 50pin (LADJ1 (Check Land L1) of the X33 Unit to BU5V (Check Land BU 5). 2. Pull out the Check Land ARF of X33 Unit and Check Land SAG (Servo GND) using wires so these can be monitored with an oscilloscope. 3. Turn the power on the set while resetting the set. * Adjustment should be conducted on total of three places: low-reflection pit and groove of the