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Kenwood KDC-MP425 Service Manual
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Kenwood KDC-MP425 Service Manual

Cd receiver
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See also: Instruction Manual
CD RECEIVER
KDC-MP425/MP6026
/W6027/W6027Y
SERVICE MANUAL
KDC-MP425
Panel assy
(A64-3187-12)
KDC-MP6026
Panel assy
(A64-3194-12)
KDC-W6027
/W6027Y
Panel assy
(A64-3197-12)
Plastic cabinet assy
(A02-1486-13)
Escutcheon
(B07-3098-02):KDC-MP425
(B07-3083-02):Others
Depends on the model. Refer to the parts list.
Mounting hardware assy
(J22-0011-03)
Screw set
Screw set
(N99-1719-05)
(N99-1730-15)
TDF PANEL INFORMATION
MODEL
KDC-MP425
KDC-MP6026
KDC-W6027/W6027Y Y33-1920-65
© 2003-12 PRINTED IN JAPAN
B53-0116-00 ( N ) 2704
CD MECHANISM EXTENSION CORD (24P) : W05-0934-00
Lever
DC cord
(D10-4589-04)
(E30-6295-05)
x2
Remote controller assy (RC-505)
(A70-2040-05)
TDF PANEL No. TDF NAME
Y33-1920-61
Y33-1920-64
DC cord
(E30-4958-05)
Antenna adaptor
(T90-0523-05)
Size AA battery
(Not suplied)
TDF-44D
TDF-MP6026
TDF-W6027

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Summary of Contents for Kenwood KDC-MP425

  • Page 1 CD RECEIVER KDC-MP425/MP6026 /W6027/W6027Y SERVICE MANUAL © 2003-12 PRINTED IN JAPAN B53-0116-00 ( N ) 2704 CD MECHANISM EXTENSION CORD (24P) : W05-0934-00 KDC-MP425 Panel assy (A64-3187-12) KDC-MP6026 Panel assy (A64-3194-12) KDC-W6027 /W6027Y Panel assy (A64-3197-12) Plastic cabinet assy Mounting hardware assy...

  • Page 3: Disassembly For Repair

    KDC-MP425/MP6026 KDC-W6027/W6027Y DISASSEMBLY FOR REPAIR How to Disassemble (PANEL ASSY) How to install knob (SRC) 1) Remove four screws (A). 1) Place knob (F) and knob (G) in the positions indicated in 2) While holding the section (B) indicated with arrows, pull and the diagram below.

  • Page 4: Components Description

    KDC-MP425/MP6026 KDC-W6027/W6027Y COMPONENTS DESCRIPTION SWITCH UNIT (X16-2490-10) Ref. No. Application / Function Operation / Condition / Compatibility LCD Driver Drives LCD Remote Control IC Controls the unit REMO ON SW The power supply of IC2 is turned on when base level goes “L”...

  • Page 5: Microcomputer's Terminal Description

    KDC-MP425/MP6026 KDC-W6027/W6027Y COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition / Compatibility DSI 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.
  • Page 6 KDC-MP425/MP6026 KDC-W6027/W6027Y MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing Operation Description value table R DATA RDS decoder DATA input terminal Not used Destination other than E and E2 L CE CE output terminal for LCD driver Not used...
  • Page 7 KDC-MP425/MP6026 KDC-W6027/W6027Y MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing Operation Description value table DIMMER Small DET terminal ON : L, OFF : H BVDD BVSS Not used Non Ext AMP CON destination Output “L” (SVR) POWER IC SVR control terminal...
  • Page 8 KDC-MP425/MP6026 KDC-W6027/W6027Y MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing Operation Description value table LO.S SW Loading start SW DET terminal Loading start : L 12cm DISC EJECT position DET SW terminal 12EJE SW 12cm DISC : L...

  • Page 9: Test Mode

    KDC-MP425/MP6026 KDC-W6027/W6027Y TEST MODE 1. How to enter the test mode 7. CD Receiver Test Mode Specification • While holding the Preset 1 and Preset 3 keys, reset the unit. • When resetting to start, forced ejection of CD is prohib- ited.
  • Page 10 KDC-MP425/MP6026 KDC-W6027/W6027Y TEST MODE 11. Special display when the display is All ON Security Pressing the Preset keys while the power is All OFF dis- • Forced Power ON mode (All models) plays the following information. Even when the security is approved, resetting the unit while...
  • Page 11 KDC-MP425/MP6026 KDC-W6027/W6027Y PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT SWITCH UNIT X16-2490-10 (J74-1566-02) X16-2490-10 (J74-1566-02) REMO PANEL 5V 1 100 X16-2490-10 X16-2490-10 Ref. No. Address Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.

  • Page 12: Pc Board (Component Side View)

    KDC-MP425/MP6026 KDC-W6027/W6027Y PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT X34-308x-xx (J74-1447-42) D257 13 11 12 8 4 3 2 9 10 6 D255 R358 R357 C352 C351 C256 D256 D252 D308 C301 C302 D301 C255 D254 D309 C257 R257 D307...
  • Page 13 KDC-MP425/MP6026 KDC-W6027/W6027Y DAUGHTER UNIT X89-2570-10 (J74-1450-02) D255 D251 D253 D256 D258 C409 R417R416 R412R411 R421R420 X34-308x-xx C405 Ref. No. Address D401 BU5V Q201 Q350 Q351 D163 D164 Q352 D165 Q354 Refer to the schematic diagram for Q355 the values of resistors and capaci- Q356 tors.
  • Page 14 KDC-MP425/MP6026 KDC-W6027/W6027Y PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-308x-xx (J74-1447-42) R256 R252 R251 R423 R313 R206 C401 C111 R106 R205 R162 C204 C408 C407 D201 D202 C501 Q151 Q153 R165 R187 D166 R188 Q152 Q154...
  • Page 15 KDC-MP425/MP6026 KDC-W6027/W6027Y DAUGHTER UNIT X89-2570-10 (J74-1450-02) C503 C357 W107/R375 R379 R368 W102/R365 R367 W108/R374 R366 R378 C119 Q101 R369 X34-308x-xx Ref. No. Address R111 C114 C113 C112 Q101 Q151 Q152 Refer to the schematic diagram for Q153 the values of resistors and capaci- Q154 tors.
  • Page 16 KDC-MP425/MP6026 KDC-W6027/W6027Y PC BOARD (COMPONENT SIDE VIEW) CD PLAYER UNIT X32-5500-00 (J74-1552-12) RFOK CP12 CP13 CP15 MIACK X32-5500-00 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 17 KDC-MP425/MP6026 KDC-W6027/W6027Y PC BOARD (FOIL SIDE VIEW) CD PLAYER UNIT X32-5500-00 (J74-1552-12) Vref FLAG HOLD MIRR LOCK TRK IN TRK OUT FCS DOWN FCS UP C22 C23 D3.3V DAVdd3.3V SDIO BCKIA 12EJE A.+8V LRCKIA /EJECT SLED IN SLED OUT A.GND...
  • Page 18 KDC-MP425/MP6026 KDC-W6027/W6027Y ELECTRIC UNIT(X34-308x-xx) C357 0.01 C356 0.01 ANT. ∗ D359 FM/AM ∗ TUNER ∗ C119 0.01 RFGND DEMODULATOR FMIN ∗ R373 1K AMIN R114 ∗ OSCGND R113 2.2K 2.2K C360 QUAL RDCL 0.01 R112 2.2K AM+B RDDA C117 OSCGND 2.2u50...
  • Page 19 KDC-MP425/MP6026 KDC-W6027/W6027Y LX-CN REQ H REQ C CHCON 10 DATA C MUTE DATA H A GND R215 R216 ∗ D301 R314 100K R313 100K D303 D308 R315 100K 4.0V 4.0V R312 100K C304 0.01 4.0V D307 D311 AUXL 4.0V AUXC...
  • Page 20 KDC-MP425/MP6026 KDC-W6027/W6027Y ∗ Q351,352,355-358 ∗ D356 MUTE SW C355 47u10 ∗ ∗ W105 W107 ∗ R216 ∗ D357 R375 ∗ ∗ ∗ W103 C359 R379 ∗ ∗ 4.7K R365 Q357 ∗ W101 ∗ ∗ W102 ∗ 4.7K Q358 ∗ ∗...
  • Page 21 KDC-MP425/MP6026 KDC-W6027/W6027Y (E30-6229) : KDC-MP425 KDC-MPV525 (E30-6278) : KDC-MPV7026 (E30-6277) : KDC-X579 KDC-MPV5025 KDC-MP6026 KDC-WV6027 PRE OUT KDC-W6027/W6027Y ∗ F GND F GND ∗ F GND R365 AUX R R GND AUX GND W101 ∗ REAR AUX L W102 ∗...
  • Page 22 KDC-MP425/MP6026 KDC-W6027/W6027Y SWITCH UNIT (X16-2490-10) ED1(SEGMENT) ED1( ESD-GND TP13 FLIP DET RESET RESET VOL A D-GND+ILL-GND VOL B ILL+B DIMMER REMOTE CONTROL IC TP11 REMO CP2 470 TP10 REMOTE CONTROL TP12 REMO PANEL 5V GREEN TP16 FLIP DET GND 5.0V...
  • Page 23 TP20 Q3,4 TP21 ILLUMINATION TP22 TP23 2.2K TP24 TP25 0.01 TP26 TP27 4.7K AUTO DIMMER 0.01 0.01 CONTROL LC75808W KDC-MP425/W6027/W6027Y/MP6026 (2/2) PNA4S22M DTA114EE Q3-5 2SC4617 B30-1564-05 B30-1566-05 DTA114EE 2SC4081 DTA124EUA UMC2N B30-1692-05 D4-13 B30-1605-05 DTC143TUA DTC144EUA MA3082-M 2SA1036K D31,32 : B30-1571-05...
  • Page 24 KDC-MP425/MP6026 KDC-W6027/W6027Y CD PLAYER UNIT (X32-5500-00/01) LEVEL SHIFT (DA) 0V (3.3V 5.0V) IOP1 IOP2 R34 4.7K (MP3) 0/3.3V C28 10 LEVEL SHIFT (3.3V 5.0V) 16.000MHz R35 100K 3.3V 0.2V 100K RESET 3.3V 3.8/0V 3.3V AVDD1 DGND1 2.4/0V 1000P 3.3V RFOK RFOK 3.3V...
  • Page 25 KDC-MP425/MP6026 KDC-W6027/W6027Y Q9,10 Vref DPU1(X92- ) 1.7Vp-p 270K OPTICAL 6800P PICKUP 0.3Vp-p 1.65V 1.65V RF2- 1.65V 1.0Vp-p FCS+ 1.0Vp-p TRK+ 3.9K TRK- 1.7Vp-p 3.3V FCS- 3300P ADVDD 3.3V 0.01 1.65V 3.0/0.3V 0.01 ADGND 91CW12AFG-4VF6 3.3/0V UPD63712GC TEST0 RF AMP/SERVO TC94A20F-010...
  • Page 26 KDC-MP425/MP6026 KDC-W6027/W6027Y EXPLODED VIEW (CD MECHANISM) DPU1 DFPC1 (X32) φ : N09-4460-05 M1.7x8.5 : N09-4472-15 M1.7x2.5 : N09-6004-05 : N09-6007-05 M2x2 φ : N09-6051-05 2x6(BLK) : N19-2163-04 1.6 WASHER : N39-2020-46 M2x2 : N09-6108-05 M2x3.5 φ : N09-6155-05 Refer to the service manual X92-4030-0x (B51-7867-00) for CD mechanism operation.

  • Page 27: Exploded View (Unit)

    KDC-MP425/MP6026 KDC-W6027/W6027Y EXPLODED VIEW (UNIT) DME1 SIZE AA BATTERY M3x8 : N30-3008-46 φ2x6 : N80-2006-46 φ2x8 : N80-2008-45 φ3x5 : N83-3005-46 φ2x5 : N84-2005-45 φ2.6x6 : N84-2606-45 φ3x8 : N80-3008-46 φ3x10 : N80-3010-46 φ3x20 : N83-3020-46 φ2.6x6 : N86-2606-46 (X34-)

  • Page 28: Parts List

    CK73GB1H103K CHIP C 0.010UF K G01-3173-04 COMPRESSION SPRING (REAR COVER) G13-1267-04 CUSHION E29-1968-04 CONDUCTIVE RUBBER E59-0829-05 RECTANGULAR PLUG G13-1273-04 CUSHION R90-0714-05 MULTI-COMP 10K X4 K4 : KDC-MP425 M3 : KDC-MP6026 E2 : KDC-W6027 E3 : KDC-W6027Y Indicates safety critical components.
  • Page 29 RK73GB2A4R7J CHIP R J 1/10W CC73GCH1H040C CHIP C 4.0PF RK73GB2A104J CHIP R 100K J 1/10W CK73GB1H332K CHIP C 3300PF RK73GB2A103J CHIP R J 1/10W K4 : KDC-MP425 M3 : KDC-MP6026 E2 : KDC-W6027 E3 : KDC-W6027Y Indicates safety critical components.
  • Page 30 ELECTRO 0.47UF 50WV UMD9N TRANSISTOR C303 CD04AS1A470M ELECTRO 47UF 10WV 2SK3018F C304 CK73GB1H103K CHIP C 0.010UF K UMD9N TRANSISTOR C351-354 CD04AS1C100M ELECTRO 10UF 16WV K4 : KDC-MP425 M3 : KDC-MP6026 E2 : KDC-W6027 E3 : KDC-W6027Y Indicates safety critical components.
  • Page 31 J 1/4W RK73EB2E103J CHIP R J 1/4W R304,305 RK73EB2E472J CHIP R 4.7K J 1/4W RK73GB2A223J CHIP R J 1/10W R306 RK73EB2E4R7J CHIP R J 1/4W K4 : KDC-MP425 M3 : KDC-MP6026 E2 : KDC-W6027 E3 : KDC-W6027Y Indicates safety critical components.
  • Page 32 D301 MA4062-L ZENER DIODE D303,304 MA4062-L ZENER DIODE D10-4576-73 ARM ASSY D307,308 MA4062-L ZENER DIODE D10-4579-13 LEVER ASSY D309-311 MA4068(N)-M ZENER DIODE D10-4581-13 D10-4582-13 K4 : KDC-MP425 M3 : KDC-MP6026 E2 : KDC-W6027 E3 : KDC-W6027Y Indicates safety critical components.
  • Page 33 MACHINE SCREW (M2 3.5TYPE3) N09-6155-05 SEMS (TAPTITE SCREW) (PT2X6) T42-1066-04 DC MOTOR ASSY (SP) T42-1067-04 DC MOTOR ASSY (LO) DPU1 X93-2010-00 OPTICAL PICKUP ASSY K4 : KDC-MP425 M3 : KDC-MP6026 E2 : KDC-W6027 E3 : KDC-W6027Y Indicates safety critical components.

  • Page 34: Specifications

    KENWOOD ELECTRONICS GULF FZE KENWOOD ELECTRONICS UK LIMITED P.O. Box 61318, Jebel Ali, Dubai, U.A.E. Kenwood House, Dwight Road, Watford, Herts, WD18 9EB, United Kingdom KENWOOD ELECTRONICS (THAILAND) CO., LTD. KENWOOD ELECTRONICS DEUTSCHLAND GMBH 2019 New Pechburi Road, Bangkapi, Huaykwang, Bangkok, 10320 Thailand Rembrücker-Str.

This manual is also suitable for:

Kdc-mp6026Kdc-w6027Kdc-w6027y

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