Kenwood-KDCMP-425-Service-Manual电路原理图.pdf

© 2003-12 PRINTED IN JAPANB53-0116-00 (N)2704CD RECEIVERKDC-MP425/MP6026/W6027/W6027YSERVICE MANUALSize AA battery(Not suplied)Plastic cabinet assy(A02-1486-13)Lever(D10-4589-04) x2Screw set(N99-1730-15)DC cord(E30-6295-05)Screw set(N99-1719-05)Escutcheon(B07-3098-02):KDC-MP425(B07-3083-02):OthersMounting hardware assy(J22-0011-03)Panel assy (A64-3187-12)Remote controller assy (RC-505)(A70-2040-05)CD MECHANISM EXTENSION CORD (24P) : W05-0934-00MODEL TDF PANEL No. TDF NAMEKDC-MP425 Y33-1920-61 TDF-44DKDC-MP6026 Y33-1920-64 TDF-MP6026KDC-W6027/W6027Y Y33-1920-65 TDF-W6027TDF PANEL INFORMATIONKDC-MP425Panel assy (A64-3194-12)KDC-MP6026Panel assy (A64-3197-12)KDC-W6027/W6027YDC cord(E30-4958-05)Antenna adaptor(T90-0523-05)Depends on the model. Refer to the parts list.2KDC-MP425/MP6026KDC-W6027/W6027YBLOCK DIAGRAMBUFFERQ101RDSDECODERIC7Q201BUFFERIC1(V-ILL ONLY)DA CONVERTERIC2REMOCONRESET SWENCODERROTARYS1WITHLCD DRIVERKEY MATRIXIC1LCDPANEL DETEJECT SWS1EJECT ILLUMIDSISYSTEMMICROPROCESSORIC2MPXE-VOL&EXT AMPDIMMERACC DETTEL MUTEB.U DETPRE MUTEPRE MUTEPRE MUTEDRIVERMUTEIC6POWERICIC4THERMALPROTECTPRE OUT(REAR/NF)EXT.AMP.CONDIMMERACCTEL MUTEBACK UPAUX IN(REAR) 3PREPRE OUT(FRONT)PRE OUTSP OUTSURGE DETSW REGCD MECHA+BSERVOSERVO+B SW 14VQ21IC9OPEL DISP I/FWIRED REMO/SUPPLYICIC3POWER ANT CONP CONRESETIC8SW 5VQ4PANEL 5VQ152SW5VS-METERAUDIO OUTIFC OUTPLL-DATAPLL-CLKSW5VAM+BA8VSW3SW2SW1MS CLKMS DATAM MUTE LSW4M MUTE RLO/EJM STOPMOSWM RSTSERVO+BA8VBU5VCD MECHA+BDATA CCH MUTECH RSTREQ HREQ CCH CLKCH-CONDATA HBACK UPNOISEQUALS-METERR DATAR CLKFMAMMP INLEVELCDQUALAFSCHSW5VBU5VPANEL DETEJECT DSI L CLKL DATASL CE L DATALVOLAVOLBREMO V DATAV CLK O-CEO-DATAO-CLKPRE MUTEMUTEP-MUTEEXT.AMP.CONDIMMERPHONEACC DETB.U DETBEEPPS1-0PS1-1PS1-2PS2-0PS2-2RSTFREEREARFRONTBU5VBACK UPA8VAUXSW5VBACK UPAM+BFM+BILLUMIA8VBU5VBU5VBU5VMODECD,MP3FMAMCHE-TYPE3600mV1372mV855mV3600mVK,M-TYPE3600mV1800mV600mV3600mVTUNERCDCHSWITCH UNIT (X16- )DAUGHTER UNIT(X89- )3KDC-MP425/MP6026KDC-W6027/W6027YBBB BA x2A x2DCEGFHJHow to Disassemble (PANEL ASSY)1) Remove four screws (A).2) While holding the section (B) indicated with arrows, pull andremove PANEL ASSY.DISASSEMBLY FOR REPAIR3) Pull SWITCH UNIT (C) as indicated in the diagram and re-move knob (D).(The knob (D) is attached to the rotary with hook (E) and itis not possible to remove hook (D) only.)How to install knob (SRC)1) Place knob (F) and knob (G) in the positions indicated inthe diagram below.2) While keeping these positions, use a piece of adhesive tape(H) to hold knobs in position, as shown in the diagarma.3) Set the rotary (J) position as shown in the diagram.4) While keeping the letters “SRC” horizontally in position, setit to the rotary on the panel.5) Remove the adhesive tape (H).4KDC-MP425/MP6026KDC-W6027/W6027Y SWITCH UNIT (X16-2490-10)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 LCD Driver Drives LCDIC2 Remote Control IC Controls the unitQ2 REMO ON SW The power supply of IC2 is turned on when base level goes “L”Q3 Key Illumination SW (Green) Lights Green key-illumination when base level goes “H”Q4 Key Illumination SW (Red) Lights Red key-illumination when base level goes “H”Q5 Dimmer Control Lights LCD Back Light when base level goes “H” ELECTRIC UNIT (X34-308x-xx)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 System µ-COM Controls FM/AM tuner, the changer, CD mechanism, Panel, volume and tone.IC2 E.Vol & N.C.MPX Controls the source, volume, tone and FM multiplex detector.Bu5V (5V), Audio8V (8V), FM+B (8V), AM+B (8V), P-CON, ANT-CONIC3 Power Supply ICIC4 Power IC Amplifies the front L/R and the rear L/R to 50W maximum.IC6 Muting logic IC Controls logic for muting.IC7 RDS decoderIC8 Reset IC “L” when detection voltage goes below 3.6V or less.IC9 SW Regulator Power Supply for MP3Q1 Serge Detection“L” when the back-up voltage becomes more than 24V (momentary power down).“H” when the back-up voltage becomes less than 24V.Q2 BACK-UP Detection“L” when B.u is present.“H” when B.u is absent or momentary power down is detected.Q3 ACC Detection “L” when Acc is present.Q4 SW 5V ON when the base is “L”.Q21 Servo RegulatorQ22 Servo SWQ23 Control Power Supply ICQ31 Dimmer Control Dimmer ON when the base is “H”.Q41 SW Regulator ControlQ101 Composite signal bufferCOMPONENTS DESCRIPTIONSW1 OUT1.53.0 Audio ON3.55.0 Audio P-CON ON7.0 Audio P-CON, P-ANT ONSW2 OUT2.03.0 ILL FM ON4.0 ILL AM ON5KDC-MP425/MP6026KDC-W6027/W6027YRef. No. Application / Function Operation / Condition / CompatibilityDSI lights when the base is “L”.Q151 DSI Driver DSI turns off when the base is “H”.DSI turns on and off when panel is taken off.Q152 Panel 5V SWWhen the panel is attached, the base goes “L”, turning the Tr ON to supply 5V to the panel.When panel is taken off, panel 5V cut off.Q153,154 ILL Control ILL lights when the base of Q153 is “H”.Q201 Noise bufferQ350Pre and NF Mute SWDrives the Pre and NF Mute sw (Q351,355) when the base is “L”.(not always Pre and NF)Q351 Pre / NF Mute SW Mutes the Pre Rear Lch or NF Lch when the base is “H”.Q352 Pre / NF Mute SW Mutes the Pre Rear Rch or NF Rch when the base is “H”.Q354Pre and NF Mute SWDrives the Pre and NF Mute sw (Q352,356) when the base is “L”.(not always Pre and NF)Q355 Pre Mute SW Mutes the Front Lch when the base is “H”.Q356 Pre Mute SW Mutes the Front Rch when the base is “H”.COMPONENTS DESCRIPTION SYSTEM MICROCOMPUTER : UPD703030GC044 (X34 : IC1)Pin No. Pin Name I/O ApplicationTruth Processing Operation Descriptionvalue table1 PLL CLK I/O CLK output terminal to F/E2 Not used O3PANEL-DET I Panel DET terminal No panel DET : L, Panel DET : H4 IC2 SDA I/O DATA input/output terminal with E-VOL5 IC2 SCL I/O CLK output terminal to E-VOL6 VDD -7 VSS -8 FLIP-DET I Flip DET terminal L : Panel DET, H : Panel flippable9 BEEP O BEEP output terminal10 REMO I Remote control input11R QUAL I RDS decoder QUAL input terminalNot used O Destination other than E and E2MICROCOMPUTERS TERMINAL DESCRIPTION6KDC-MP425/MP6026KDC-W6027/W6027YPin No. Pin Name I/O ApplicationTruth Processing Operation Descriptionvalue table12R DATA I RDS decoder DATA input terminalNot used O Destination other than E and E213 L CE O CE output terminal for LCD driver14 Not used O Non variable illumination switch destination15 Not used O Non variable illumination switch destination16 DSI I/OEJECT KEY ILL, GUIDE ILL, FLIP-DET “H” and PANEL-DET is “L” : “H” / “L”DSI control terminal FLIP-DET “H” and PANEL-DET is “H” : “L”17 DIM CON O Dimmer control terminal 50ms interval : “H” / “L”18 TEST -19 ILL CON O During FLIP DET ILL+B OFF During FLIP DET “L” : H20 VOL A I Volume key input When looking at VOL, also look at FLIPDET21 VOL B I Volume key input When looking at VOL, also look at FLIPDET22 MOSW O CD mechanism MOTOR IC SW Loading, Eject, Brake : H23 LO/EJ I/O CD mechanism LOADING, EJECT switching STOP, Brake : Hi-Z, Loading : L, Eject : H24 M STOP O STOP request to CD mechanism25 M RST O Reset output terminal to CD mechanism Normal : H, Reset : L26 MUTE I/O MUTE terminal Hi-Z : Mute ON, L : Mute OFF27 LOE/LIM SW I CD DOWN SW DET terminal H : Chucking28 M-MUTE L I MUTE request terminal from CD mechanism L : Mute request29 M-MUTE R I MUTE request terminal from CD mechanism L : Mute request30 PANEL 5V I/O Panel 5V control terminal Panel DET : L, Detached, Momentary power down : H31 RESET I Normal : H, Reset : L32 XT1 I 32kHz33 XT2 I 32kHz34 REGC - Connect 1µF condenser to GND35 X2 I 20MHz36 X1 I 20MHz37 VSS -38 VDD -39 CLKOUT -40 IC2 TYPE1 I E-VOL setting switching terminal41 IC2 TYPE0 I E-VOL setting switching terminal4244 TYPE2TYPE0 I Destination switching terminal e45 CD MECHA+B I/O Power supply control terminal for MP3 ON : L, OFF : Hi-Z46 SW5V I/O Control terminal for SW5V ON : L, OFF : Hi-Z47,48 PS2-0, PS2-1 O Control terminal for power supply IC w4951 PS1-0PS1-2 O Control terminal for power supply IC q52 B.U-DET I Momentary power down DET terminal BU DET : L, BU no DET (momentary power down) : H53 ACC-DET I ACC DET terminal ACC DET : L, ACC no DET : HMICROCOMPUTERS TERMINAL DESCRIPTION7KDC-MP425/MP6026KDC-W6027/W6027YPin No. Pin Name I/O ApplicationTruth Processing Operation Descriptionvalue table54 DIMMER I Small DET terminal ON : L, OFF : H55 BVDD -56 BVSS -57 Not used O Non Ext AMP CON destination Output “L”58 (SVR) O POWER IC SVR control terminal Momentary power down : H59 P-MUTE O POWER IC MUTE output terminal During POWER OFF : L, During ALL OFF : L, When TEL MUTE : L60 P-STBY O POWER IC STBY output terminal When POWER IC ON : H, OFF : L61 Not used O62 PRE MUTE R O Rch PRE MUTE outputWhen momentary power down : L,M-MUTE R : L (during CD), 2 zone : H fixed63 PRE MUTE L O Lch PRE MUTE outputWhen momentary power down : L,M-MUTE L : L (during CD), 2 zone : H fixed64 AFS O Constant switching terminal at noise DET During FM seek and AF search : L, During reception : H65O-DATA I/O External display DATA terminalNot used O Non external display destination No OPEL DISP : L66O-CLK I/O External display CLK terminalNot used O Non external display destination No OPEL DISP : L67O-CE I/O External display CE terminalNot used O Non external display destination No OPEL DISP : L68 LX_RST O Reset output to external devicesNormally : L,System RST return, then after 400msec or more : H then L69 LX_CON O Control output to external devices ON : H, OFF : L70 AVCONT O AD reference voltage control output While in operation : H71 AVDD -72 AVSS -73 AVREF - AD reference voltage control input Connect to 70 pin74 PHONE I PHONE DET terminalTEL MUTE : 1V or lower,NAVI MUTE : 2.5V or higher75 TYPE3 I Destination switching terminal7681 Not used I82 S-METER I S-meter DET terminal83 NOISE I FM noise DET terminal84 IFC-OUT I F/E IFC OUT input terminal85 LX_MUTE I MUTE request from external devices H : MUTE ON, L : MUTE OFF86 LX_REQ_M O Request output to external devices Request DET : L87R-CLK I RDS decoder CLK input terminalNot used O Non RDS destination Output L fixed88 LX_REQ_S I Request input from external devices Request DET : L89 KEY-REQ I Communication request from LCD driver L : KEY inputMICROCOMPUTERS TERMINAL DESCRIPTION8KDC-MP425/MP6026KDC-W6027/W6027YPin No. Pin Name I/O ApplicationTruth Processing Operation Descriptionvalue table90 LO.S SW I Loading start SW DET terminal Loading start : L91 12EJE SW I12cm DISC EJECT position DET SW terminal12cm DISC : L12 or 8cm DET92 EJECT I EJECT DET terminal L : KEY input93 Not used O Output L fixed94 LX_DATA_S I DATA input terminal from external devices95 LX_DATA_M O DATA output terminal for external devices Last retention96 LX_CLK I/O CLK input/output terminal with external devices97 L DATAL I Data input from LCD driver98 L DATAS O DATA output terminal to LCD driver99 L CLK O CLK output terminal to LCD driver100 PLL DATA I/O DATA input/output terminal with F/ETruth value tableqPS1-0 PS1-1 PS1-2 AUDIO P-CON P-ANTLLLOFF OFF OFFH (L) L (H) L ON OFF OFFHHLONONOFFHHHONONONwPS2-0 PS2-1 ILLUMI FM+B AM+BLLOFF OFF OFFH (L) L (H) ON ON OFFHHONOFF ONeTYPEMODEL DESTINATION012KDC-X579 K L L LKDC-MP425 K H L LKDC-MPV525 K L H LKDC-MPV5025 K L L LKDC-WV6027 E H L HKDC-W6027 E L L HKDC-W6027Y E L L HKDC-MPV7026 M H H LKDC-MP6026 M L H HMICROCOMPUTERS TERMINAL DESCRIPTION9KDC-MP425/MP6026KDC-W6027/W6027Y1. How to enter the test mode While holding the Preset 1 and Preset 3 keys, reset the unit.2. How to exit from the test mode Reset the unit, momentary power down, ACC OFF, powerOFF, and Panel detached.(Note) The test mode cannot terminated by Panel is falldown.3. Initial status in the test mode Sources : All OFF.Display : All segments are lit.Volume : -10 dB (displayed as 30) Loudness : OFF CRSC : OFF regardless of the presence ofswitching function. SYSTEM Q : Flat. BEEP : When pressing any keys, the buzzergenerates a beep at any time. DISPLAY TYPE: TYPE A4. RDS automatic measurement An addition to disposal of substitute for visual check PSdisplay as usual production lines. P-CON terminal is OFF by force, when received the PSdata and in case of corrobaration PS display is“RDS_TEST”. (“_” is mean blank.) This disposal is test mode only. P-CON is switching the source or return with power onoff.5. Special display in Tuner modeWhen any of the following messages is displayed in Tunermode, the front end may be abnormal. “TNE 2P NG”: The EEPROM is set to the default (unstablevalues) because the F/E was shipped without passingthrough the adjustment process, etc. “TNCON NG”: Communication with the F/E is not possible.6. Forced switching of K3I Each press of the Preset 6 key in Tuner mode should switchK3I from AUTO Forced Wide Forced Middle ForcedNarrow AUTO. The initial status is AUTO and the dis-play shows these modes as follows.AUTO:FMAForced Wide : FMWForced Middle : FMMForced Narrow : FMNTEST MODE7. CD Receiver Test Mode Specification When resetting to start, forced ejection of CD is prohib-ited. When a CD is in place, the CD is not recognized whenreset. When this key is pressed, the mechanism jumps tothe following track.No9 No15 No10 No11 No12 No13 No22 No14 No9 (Return to the first track.) When this key is pressed, the track goes down by onefrom the currently played track.When a CD being played, by pressing 1 key intermittently,the mechanism can be made to jump to Track No. 28.8. Audio-related specificationsA short press of the Q key initiates the audio adjustmentmode. Pressing the key on the remote initiates the audioadjustment mode.Fader is selected to the initial item. Continuous holding of a remote control key is inhibited. Bass, Middle and Treble are adjusted in 3 steps of -8/0/+8with the Track Up/Down keys. Balance is adjusted in 3 steps of L15/0/R15 with the TrackUp/Down keys.Fader is adjusted in 3 steps of F15/0/R15 with the TrackUp/Down keys.Volume Offset is adjusted in 2 steps of -8/0 with theTrackUp/Down keys.9. Menu-related specificationsA short press of the MENU key initiates the Menu mode.Except, tape source is usually press and hold 1 second toenter the menu mode and short press initiates turn over. Pressing the DNPP/SBF key on the remote initiates theMenu mode. Continuous holding of a remote control key is inhibited. Contrast is adjusted in 3 steps of 0/5/10 (5x7dot), 0/4/7(14seg) with the Track Up/Down keys.10. Backup current measurementWhen the unit is reset while ACC is OFF (i.e. by turningBack-Up ON), the MUTE terminal goes OFF in 2 secondsin place of 15 second.10KDC-MP425/MP6026KDC-W6027/W6027Y11. Special display when the display is All ONPressing the Preset keys while the power is All OFF dis-plays the following information.14seg 8 digits1key Version display (8 digits, Month/Day/Hour/Minute)(Display) xxxxxxxx2key3key Short press: View power ON time. (The All OFFperiod is not counted.)Long press/hold: Clear power ON time.(Display) PONxxxxx Max. 65535 (hours)4key Short press: Display TAPE operation time.Long press/hold: Clear TAPE operation time.(Display) TPTxxxxx Max. 6