Kenwood-DPX-4020-Service-Manual 电路图 维修手册.pdf

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1、 2001-5 PRINTED IN JAPAN B51-7776-00 (N)1734 CD CASSETTE DSP RECEIVER DPX-4020 SERVICE MANUAL AUD DIGITAL SIGNAL PROCESSOR DSP EQ FM+ DISC B NR SCRL 1SCN 2RDM 3REP 45M. RDM 6 ATT USERB.SMETAL DISP DIGITAL PULSE AXIS CONTROL NAME.S PWR OFF FNC CD-R/CD-RW AVAILABLE TI SRC S.A CD CASSETTE DSP RECEIVER

2、OPEN DPAC COMPACT DIGITAL AUDIO DOLBY B NR Screw set (N99-1701-05) : M type DC cord (E30-4939-05) Screw set (N99-1711-05) : K type Knob (VOL) (K25-1302-03) Escutcheon assy (B07-3046-04) Front glass (B10-4063-01) : K type (B10-4064-01) : M type Escutcheon assy (B07-3047-04) : K type Panel assy (A64-2

3、383-02) : K type (A64-2384-02) : M type Knob (CD EJ) (K24-3716-03) : M type (K24-3717-03) : K type Badge (B43-1284-04) Dressing panel (A21-4102-02) RadioFans.CN 收音机爱 好者资料库 DPX-4020 2 SWITCH UNIT (X25-8970-00) DOLBY UNIT (X87-3040-00) CASSETTE MECHA CD MECHA (X16-1250-00) SUB PANEL UNIT SYSTEM u-CON

4、MN101C15 VOL BASS INPUT SEL ISO NC. MPX PWR AMP FRONT SP OUT REAR SP OUT MUTE TC4066FB ANALOG SW TA8263BH PRE OUT FRONT FRONT/REAR/N-F (J TYPE) PRE OUT E VOL, TONE, NC, MPXTDA7407 TRE MD/CD CHANGER DSP M65849BFP VFD PANEL u-CON REMOCON KEY MATRIX VOL SOFT MUTE MN101C10 AMP-CTRL ANT CON CXA2560Q LB16

5、41 F/E ANT. PLAY HEAD MODE PACK DET STBY PACK IN TAKEUP REELSUPPLY REEL REELTREELS MID RST SW BPF ANALYZER SPECTRUM BA3129F SW OP MUTE (K,M) TYPE ONLY REAR/N-F (K,M TYPE) NAVI MUTE SMALL DET ACC DET BU DET 5V AVR FM8V SW AM8V SW P CON 5V AVR 5V SW MOTOR SW MAIN A8V AVR BU5V AVR +7.5V CD SRV AVR DC/D

6、C +B SW DC/DC +B SDA SCL RESET FSD OUT FM SD PWR SVR PWR STBY PWR TEST MUTE AUDIO OUT SCL FM SD FSD SDA AM ANT FM ANT AUD +B FM +B AM +B F/E 5V SW1-3 MRST CD MOTOR ANT CON P CON LINE MUTE ILLUMI ACC B. U GND P MUTE BU DET ACC DET ILL CON LANP P CON BU 5V CD CH +6dB 0dB DSP 5V FL +BBU 5V LED +B AM FM

7、 FM +B AM +B LED +B F/E 5V B. U B.U BU 5V AUD +B SDA SCL PON 5V BUZZ DSP STBY DSP DATA DSP CLK (-0.5dB) AUDIO OUT AMP CTRL AMP-CTRL P CON MOTOR +B CD SRV +B DSP 5V AUDIO +B BUZZ PWR STBY PWR TEST PWR SVR SCL SDA FRONT REAR FM AM +10dB P ANT BU 5V PN SC CON PN SC REQ PN SC DATA PN MC REQ CD MUTE CD L

8、O/EJ CD MSTOP F-IN(L) VREF R-IN(L) F-IN(R) R-IN(R) SUB MOTOR DRIVER SUBMAIN REV RchRch FWD Lch REV Lch FWD A OUT AM : +3dB CAS : +0dB FM : +1dB CD CH : +2dB CH DATA H CH CON CH REQ H CH REQ C CH DATA C CH CLK RESET MUTE CD SRV +B BU 5V AUD +B BU 5V AND +B CD SRV +B MOTOR +B AUD +B SW INPUT PREOUT NO

9、N-FAD PWR MUTE DSP-DATA DSP-STBY DSP-CLK P ON P ANT BU DET ACC DET AMP CTRL P MUTE FM u MUTE LAMP ILL CON AM MIAN-M PN MC CLK PN MC DATA C SUB M- C SUB M+ R REEL F REEL C MODE 3 C MODE 2 C MODE 1 C MUTE C MSC C MUSIC C F/R C MTL C NR SW1-3 MRST CD MSTOP CD MOTOR CD LO/EJ CD MUTE MPX OUT DSP OFF -4dB

10、 DSP ON -4dB -12dB+15dB CAS PWR MUTE +10.6dB RESET PN MC REQ PN MC CLK PN MC DATA PN SC CON PN SC DATA PN SC REQ REMOCON AUD +B FRONT REAR PREOUT NON-FAD (-0.5dB) CPH3105 CPH3105 PON 5V BU 5V MAIN-M P ON SUB PANEL CH REQ H CH CLK CH DATA C CH REQ C CH DATA H CHCON MM CAS : 440mV AM : 170mV FM : 340m

11、V CD CH : 1200mV AM : 170mV FM : 340mV CD : 1200mV CD CH : 956mV FM : 480mV CAS : 277mV AM : 151mV CAS : 440mV CD CH : 1200mV AM : 170mV FM : 680mV DSP OFF AM : 477mV FM : 1516mV CAS : 1557mV CD CH : 3010mV (STADIUM) AM : 202mV CAS : 370mV FM : 680mV CD CH : 1270mV DSP ON AM : 120mV (STADIUM) FM : 3

12、81mV CAS : 220mV CD CH : 756mV DSP ON CD CH : 2858mV FM : 1431mV AM : 450mV CAS : 440mV BLOCK DIAGRAM RadioFans.CN 收音机爱 好者资料库 DPX-4020 3 G SYNTHESIZER UNIT (X14-6710-XX) COMPONENTS DESCRIPTION Ref.No.Component NameApplication/FunctionOperation/Condition/Compatibility IC1MN101C15FCPSystem micom IC2TD

13、A7407Electronic volume IC3TC4066BF(N)Analog SWVoice signal input switching (CD,.MD,CASSETTE) IC4M65849BFPDSP IC IC5BA3129FSwitching ope-amplifierVoice signal output switching (FRONT,.REAR) IC7TA8263BHPWR IC IC8LB1641Motor driverFor cassette mechanism sub-motor IC9PST9135NRReset ICReset 3.5V voltages

14、 IC10TC7W02FULogic IC(OR)Rogic circuit for MUTE IC11M5237MLPower source ICReg for A8V Q12SC4081Power source SW for F/E VDD 5VON:F/E VDD 5V output Q2CPH3105Power source SW for FMON:FM+B 8V output Q3CPH3105Power source SW for AMON:AM+B 8V output Q4FMG1APower source control SW for FM/AMON:FM+B/AM+B 8V

15、output Q101 2SB1443Power source SW for main motorON:Main motor ON Q102 DTC144EKPower source control SW for main motorON:Main motor ON Q201 DTC143TKMUTE SW Q202 DTC143TKMUTE SW ON:MUTE Q301 DTC143TKMUTE SW Q302 DTC143TKMUTE SW Q401 DTC124EUASW for electronic volume muteON:MUTE Q402 FMC2ASW for analog

16、 switch control Q403 DTC144EUASW for switching ope-amplifier control Q404 DTC144EUASW for power IC mute terminal contorolON:Temperature protection OFF (Test mode) Q405 DTA114EUAControl terminal for MUTE (preout)ON:MUTE Q406 DTA114EUAControl terminal for MUTE (preout)ON:MUTE Q407 DTA114EUASW for elec

17、tronic volume muteON:MUTE Q601 DTC114YUASW for system micom reset ON:REEST Q602 DTA124EUASW for RESET IC output ON:REEST Q701 DTC144EUASW for BU serge detectionON:Serge(power down) Q702 FMW1SW for BU/ACC detection ON:Power down Q703 DTC144EUASMALL detection SWON:SMALL ON Q705 DTA124EUASW for externa

18、l amplifier control Q706 2SB1277(Q,R)SW for P-CONON:P-CON output Q707 2SA1037KSW for P-CON over-electric current protectON:Stop P-CON output Q708 DTA124EUAControl SW for P-CON over-electric current protectON:Stop P-CON output Q709 DTC114YUAControl switch for P-CON ON:P-CON output Q710 2SB1277(Q,R)SW

19、 for P-ANTON:P-ANT output Q711 DTC114YUAControl switch for P-ANT ON:P-ANT output Q712 2SB1548(P)Power source switch for BU 5V Q713 2SC4081Power source switch for BU 5V (Darling ton) Q714 IMD16APower source switch for PON 5VON:PON 5V output Q715 FMC2APower source control switch for analog+BON:Analog+

20、B 8V output Q716 2SB1548(P)Power source switch for analog+BON:Analog+B 8V output Q717 2SD1766Power source switch for DSP+BON:DSP+B 5V output Q718 FMC2APower source control switch for servo+BON:Servo+B 7.5V output Q719 2SB1548(P)Power source switch for servo+BON:Servo+B 7.5V output Q720 2SC4081Power

21、source switch for servo+B(Darling ton)ON:Servo+B 7.5V output Q724 2SB1548(P)Power source switch for servo+BON:Servo+B 7.5V output Q901 FMC3APower source control switch for ILLUMI+BON:ILLUMI+B 14.4V output Q902 2SB1446Power source switch for ILLUMI+B (Darling ton)ON:ILLUMI+B 14.4V output Q903 2SC4081

22、Power source switch for ILLUMI+BON:ILLUMI+B 14.4V output RadioFans.CN 收音机爱 好者资料库 DPX-4020 4 G SUB CIRCUIT UNIT (X16-1250-00) Ref.No.Component NameApplication/FunctionOperation/Condition/Compatibility IC1SBX-3050Remote control ICLight receive port of remote controller G DOLBY UNIT (X87-3040-00) Ref.N

23、o.Component NameApplication/FunctionOperation/Condition/Compatibility IC1CXA2560QDOLBY ICPRE-AMP/DOLBY-EQ Q1KRC103SBetween-music detection level adjustment FF/REWFF/REW ON G SWITCH UNIT (X25-8970-00) Ref.No.Component NameApplication/FunctionOperation/Condition/Compatibility IC1MN101C10AALPanel micom

24、Display mechanism & key matrix control IC2BA3830FBAND PASS IC (Spectrum analyzer) Signal data from X14 are displayed with strength of frequency Q1DTC114EUARST switchH:RST Q22SK3018Analog signal AGCAuto gain control of analog signal Q3UMC3NSW5VH:ON Q4FMC4ASW for VFD logic power sourceH:ON Q5DTC114EUA

25、VFD branking controlH:ON COMPONENTS DESCRIPTION DPX-4020 5 G SYSTEM -COM (IC1:X14-6710-XX) MN101C15FCP Pin.No.Pin nameI/ODescriptionProcessing Operation 1VREF-Connected to GND. 2NCINot used. Connected to GND. 3FM_SDIFM SD input. 4F_REELIReel pulse (FWD) detection.Hi-Z 5R_REELIReel pulse (REV) detect

26、ion.Hi-Z 6NCINot used. Connected to GND. 7ACC_DETIAcc detection input. 8SMALLISMALL detection input. 9LINE MUTEILINE MUTE detection input. 10VREF+-A/D converter. Reference voltage input terminal. 11VDD-Main power input. 12X Tal (8.38)OConnected to main clock. 13X Tal (8.38)IConnected to main clock.

27、14VSS-Connected to GND. 15XIIConnected to GND. 16XOOOpen. 17MMODIConnected to GND. 18PN_MC_DATAOData output to panel micom. 19PN_SC_DATAIData input from panel micom. 20PN_MC_CLKOClock output to panel micom. 21CH_DATAHOData output to CD-CH. 22CH_DATACIData input from CD-CH. 23CH_CHCLKI/OPrevious bus

28、: Data input from CD-CH. New bus : Data output to CD-CH. 24BEEPOBeep output. 25RESETISystem reset. 26CH_REQHOSend request output to CD-CH. 27CH_CON1-Operation control of CD-CH1. 28CH_CON2-Operation control of CD-CH2. 29P_ANT-Power ANT control. 30P_CON-External amplifier power control. 31BU_DETIBack

29、up detection input. 32CH_REQCISend request input from CD-CH. 33PN_SC_REQISend request input from panel micom. 34SEL1-IC2$ noise cancellation selection. 35SEL2-IC2$ noise cancellation selection. 36SDAI/OI2C data input/output. 37NC-Not used. (Open) 38SCLOI2C clock output. 39P_ON-Internal power control

30、. 40LAMP-Key illumination control. MICROCOMPUTERS TERMINAL DESCRIPTION DPX-4020 6 Pin.No.Pin nameI/ODescriptionProcessing Operation 41PN_MC_REQOSend request output to panel micom. 42PN_SC_CONOOperation control output of panel micom. 43NON_FADOControl Non-Fad output. (ON/OFF) 44MUTEOAudio mute output

31、. 45TYPE1IDestination type input. 46TYPE2IDestination type input. 47PNL_OPEN-Panel open detection. 48C_SUB_M-OC mechanism loading motor control.L 49C_SUB_M+OC mechanism loading motor control.L 50C_MAIN_MOC mechanism motor control.L 51C_MODE3ISub-motor control SW3 (pack-in detection).Hi-Z 52C_MODE2IS

32、ub-motor control SW2.Hi-Z 53C_MODE1ISub-motor control SW1.Hi-Z 54CD_SW1IInput from CDSW1.(loading start SW) 55CD_SW2IInput from CDSW2.(12cm disc detection SW) 56CD_SW3IInput from CDSW3.(down &limit switch) 57CD_LO/EJ-CD mechanism loading motor control .(LO/EJ) 58CD_LMON-CD mechanism loading motor co

33、ntrol .(ON/OFF) 59CD_MSTOPOStop output to CD mechanism computer. 60CD_MRSTOReset output to CD mechanism. 61CD_MUTEIMute input from CD mechanism. 62C_MUTEOEQ mute selection SW.L 63C_F/ROFWD/REV selection.L 64C_MSCOBetween-music detection mode control.L 65C_NRODOLBY control.(ON/OFF)L 66C_MS_INIBetween

34、-music pulse detection input.Hi-Z 67C_MTLOMETAL control.(ON/OFF)L 68DSP_DATAOData output to DSP. 69DSP_CLKOCLK output to DSP. 70DSP_STBOLatch output to DSP. 71INPUT-Control input selected SW. 72NC-Not used. 73FM+B-FM power. 74AM+B-AM power. 75FSD_OUT-Station-meter detection. 76TEST-Power IC control.

35、 77PW_MUTE-Power IC mute control. 78PWIC_STBY-Power IC standby control. 79PWIC_SVR-Power IC control. 80AMP_CTRL-External amplifier control. MICROCOMPUTERS TERMINAL DESCRIPTION DPX-4020 7 G PANEL -COM (IC1 : X25-8970-00) MN101C10AAL Pin.No.Pin nameI/ODescriptionProcessing Operation 1ANA4ISpectrum ana

36、lyzer input.(1kHz)H(Hi-Z) 2ANA5ISpectrum analyzer input.(3.3kHz)H(Hi-Z) 3ANA6ISpectrum analyzer input.(10kHz)H(Hi-Z) 4NCINot used. Connected to GND.L(Hi-Z) 5NCINot used. Connected to GND.L(Hi-Z) 6VREF+IA/D converter. Reference voltage input terminal.- 7VDD-Main power input.- 8OSC2-Main clock connect

37、ion.(16.0MHz)- 9OSC1-Main clock connection.(16.0MHz)- 10VSS-Connected to GND.- 11XIIConnected to GND.L 12XOONot used.(Open)- 13MMODIConnected to GND.L 14PN_SC_DATAOSystem computer communication.Data output terminal.L 15PN_MC_DATAISystem computer communication.Data input terminal.H/L(Hi-Z) 16PN_MC_CL

38、KISystem computer communication.Clock input terminal.H/L(Hi-Z) 17VFD_DATAOVFD driver data output.L 18NCONot used.(Open)L 19VFD_CLKOVFD driver clock output.L 20VFD_LATOVFD driver latch output.L 21RSTIReset input.- 22VFD_BKOVFD driver blank output.L 23NCONot used.(Open)L 24PONOP-ON 5V control.L 25NCON

39、ot used.(Open)L 26PN_SC_REQOSystem computer communication.Send request output.L 27PN_MC_REQISystem computer communication.Reception request input.H(a)(Hi-Z) 28PN_SC_CONISystem computer communication.Panel operation control.H(a)(Hi-Z) 29REMOCONIRemote control signal input.- 30KR0IKey-return signal in

40、put 0.- 31KR1IKey-return signal input 1.- 32KR2IKey-return signal input 2.- 33KR3IKey-return signal input 3.- 34KR4IKey-return signal input 4.- 35KR5IKey-return signal input 5.- 36NCONot used.(Open)L 37KS0OKey-scan signal output 0.L 38KS1OKey-scan signal output 1.L 39KS2OKey-scan signal output 2.H 4

41、0KS3OKey-scan signal output 3.H 4160 NCONot used.(Open)L 61VREF-IConnected to GND.L 62ANA1ISpectrum analyzer input.(63Hz)H(Hi-Z) 63ANA2ISpectrum analyzer input.(150Hz)H(Hi-Z) 64ANA3ISpectrum analyzer input.(330Hz)H(Hi-Z) MICROCOMPUTERS TERMINAL DESCRIPTION DPX-4020 8 I How to enter the test mode Whi

42、le pressing on DSP + EQ or DSP + AM keys, press SRC key. It is possible to enter the test mode in this manner. I Test Mode Condition When booted with all OFF. The value for the volume is -10dB. (On display: 30) Beep disabled. All lights display. CRSC:OFF (Only K/M type) DSP:Bybass EQ:Flat SEP/ANA:Pe

43、ak hold However, when entering the test mode with DSP + AM key, the volume value will be -30dB with beep enabled. The beep enable condition is such that, regardless of effective keys and non-effective keys, beeps are effective whenever keys are pressed. I Test Mode (Display) Since there are many seg

44、ment numbers in the display section, bridging with other segments can be confirmed (Only when the source condition is in all OFF.) I Test Mode (Source: CD) When the disk is loaded, track No. 9 is the first track to be played. The following keys are operated only when the source is CD. When there are

45、 changes in the track numbers being played in other cases, the playing is continued. | key selects only certain tracks. | key selects by going down the tracks, as with the regular operation. I Test Mode (EQ Adjustment) When displaying the source, by pressing EQ/AUD once quickly, adjustment mode is e

46、ntered. When 1 key is press: Flat When 2 key is pressed: Full boost Whne 3 key is pressed: Full cut I The settings for Q, Feq, Ex are fixed. BassQ2.0 Feq150Hz ExtON MidQ2.0 Feq1kHz TrebleFeq10KHz I Test Mode (Audio Adjustment) While displaying the source, by pressing EQ/AUD key in an elongated manne

47、r, adjustment mode is entered. By continuing with FM , AM key, the following items may be selected and II keys can be used for adjustment. For balance adjustment, three steps of Right ,. Center ,. Left are set. (L15, R15) For fader adjustment, three steps of Front ,. Center ,. Rear are set. (F15, R1

48、5) For the amplifier control, OFF ,. 2 Test Mode (Function at the time of ALL OFF Source) By pressing PLAY/PAUSE key in an elongated manner during each sources, adjustment mode can be entered and the following items are selected with AM , FM keys. Adjustment will be conducted with | keys. The follow

49、ing are added to each source functions (including CD and TAPE). For Preout adjustment, Front ,. Rear ,. N-F Preout adjustment is the first item. I Releasing the Test Mode Test mode is released by RESET, ACC OFF/ON, Power OFF/ON. Also, Source, Tuner, and Audio are returned to initial condition by ACC OFF and Power OFF. I Backup current measurement compatible Regardless of the test mode, when reset at ACC OFF condition (Backup is ON), MUTE will go OFF after two seconds. (The peripherals are not powered off unlit the CD/MD mechanism stops, it takes 2 seconds plus