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Kenwood KDC-MP628 Service Manual
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Kenwood KDC-MP628 Service Manual

Cd receiver
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See also: Instruction Manual
CD RECEIVER
KDC-MP628
KDC-MP7028
KDC-MP728
KDC-MP8029
KDC-W7031/Y
SERVICE MANUAL
Panel assy
KDC-MP628 (A64-3507-12)
System
ATT
SCAN
RDM
VOL
VOL
AUD
AUD
AUTO
AME
MENU
Panel assy
KDC-MP728 (A64-3506-12)
System
ATT
SCAN
RDM
VOL
VOL
AUD
AUD
AUTO
AME
MENU
Panel assy
KDC-W7031/Y (A64-3508-12)
ATT
System
SCAN
RDM
VOL
VOL
AUD
AUD
TI
AME
MENU
Mounting hardware assy
(J21-9716-03)
* DC cord
(E30-xxxx-xx)
* DC cord
* Depends on the model. Refer to the parts list.
(E30-6412-05)
AN
KDC-MP628
SCRL
SW
SW
F.
REP
M.RDM
C.S.
SRC
FF
FF
AN
KDC-MP728
SCRL
SW
SW
F.
REP
M.RDM
C.S.
SRC
FF
FF
AN
KDC-W7031
SCRL
SW
SW
REP
F.
M.RDM
PTY
SRC
FF
FF
Plastic cabinet assy
(A02-2732-03)
* Escutcheon
* Antenna adaptor
(B07-xxxx-xx)
(T90-0523-05)
© 2005-3 PRINTED IN JAPAN
B53-0266-00 ( N ) 1708
Panel assy
KDC-MP7028 (A64-3665-02)
ATT
System
SCAN
VOL
VOL
AUD
AUD
AUTO
AME
MENU
Panel assy
KDC-MP8029 (A64-3513-12)
ATT
System
SCAN
VOL
VOL
AUD
AUD
AUTO
AME
MENU
SPARE TDF PANEL
MAIN UNIT NAME
TDF PARTS No.
KDC-MP628
Y33-2200-62
KDC-MP7028
Y33-2200-60
KDC-MP728
Y33-2200-62
KDC-MP8029
Y33-2200-63
KDC-W7031/Y
Y33-2200-64
* Remote controller assy (RC-527)
* Screw set
(A70-2067-05)
(N99-xxxx-xx)
Lever
(D10-4589-04) x2
This product uses Lead Free solder.
CD MECHANISM EXTENSION
CORD (24P) : W05-0934-00
AN
KDC-MP7028
SCRL
SW
SW
RDM
REP
F.
M.RDM
C.S.
SRC
AN
KDC-MP8029
SCRL
SW
SW
RDM
REP
F.
M.RDM
SRC
TDF NAME
TDF-MP75D
TDF-MP75DB
TDF-MP75D
TDF-MP8029
TDF-W7031
Battery
(Not supplied)
* Tapping screw
(N09-xxxx-xx)
FF
FF
FF
FF

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Summary of Contents for Kenwood KDC-MP628

  • Page 1 KDC-MP7028 KDC-MP728 KDC-MP8029 KDC-W7031/Y SERVICE MANUAL © 2005-3 PRINTED IN JAPAN B53-0266-00 ( N ) 1708 CD MECHANISM EXTENSION CORD (24P) : W05-0934-00 Panel assy Panel assy KDC-MP628 (A64-3507-12) KDC-MP7028 (A64-3665-02) KDC-MP7028 System KDC-MP628 System SCRL SCRL SCAN M.RDM SCAN M.RDM...

  • Page 2: Block Diagram

    KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y BLOCK DIAGRAM AUX IN IC800 Q800,802 SPECTRUM BU5V D3.3V A3.3V REF+B Q402,403 ANALYZER IC500 AM+B PRE OUT FRONT-END Q608-613 IC601-603 A3.3V (FRONT) IC300 PRE OUT IC301,302 IC303 IC305 IC306-308 Q801 (REAR) MUTE E-VOL/ SVR REF PRE OUT SOURCE SELECTOR...

  • Page 3: Components Description

    KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y COMPONENTS DESCRIPTION ● ELECTRIC UNIT (X34-3xxx-xx) Ref. No. Application / Function Operation / Condition IC10 AUDIO8V REF POWER SUPPLY 1.27V output VFD / Mechanism digital power supply. IC60 SWITCHING REGULATOR CONTROLLER OUT1 : VFD (4.7V), OUT2 : Mechanism digital (5V)
  • Page 4 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition MECHA DIGITAL AVR SW When base is “H”, MECHA DIGITAL AVR is turned “OFF” VFD (4.7V) AVR SWITCHING POWER DRIVER Controlled by IC60 and Q61 determines frequency MECHA DIGITAL AVR POWER DRIVER...
  • Page 5 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition TRIANGLE RED LED SW Lights up when base is “H” BLUE LED SW Lights up when base is “H” GREEN LED SW Lights up when base is “H”...

  • Page 6: Microcomputer's Terminal Description

    KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y MICROCOMPUTER’S TERMINAL DESCRIPTION ● SYSTEM MICROCOMPUTER : IC102 (X34- : ELECTRIC UNIT) Pin No. Pin Name Function Processing Operation VREF Analog reference voltage AVCC LX DATA S Data from slave unit LX DATA M Data to slave unit...
  • Page 7 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Function Processing Operation E2PROM I2C clock MAX 100kHz ON : H (Momentary power down/Panel detached) PON PANEL Panel 5V control 11 Minutes after ACC OFF : Hi-Z DSI control 46~49 Not used.
  • Page 8 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Function Processing Operation OEM DISP DATA External display DATA External display OEM DISP CLK External display CLK External display OEM DISP CE External display control request External display Not used. P CON...
  • Page 9 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Table CD MOTOR / CD LOEJ PANEL MECHA CD MOTOR CD LOEJ FULL OPEN FULL CLOSE OTHER Standby Hi-Z PM OPEN Eject PM CLOSE Load Brake Hi-Z RDS AFS Use prohibited RDS AFS M RDS AFS L...
  • Page 10 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Function Processing Operation Data reception from system µ-com SYS DATA UART communication 500kbps PAN DATA Data transmission from panel UART communication 500kbps FL CLK Fruorescent indicator serial communication reference clock Reference clock 4.125MHz...
  • Page 11 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Function Processing Operation 90~93 Not used Memory data write permission L : Write, H : Wait SW3.3V start up : Hi-Z Memory data transmission permission L : Data transmission, H : Wait SW3.3V start up : Hi-Z...
  • Page 12 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y MICROCOMPUTER’S TERMINAL DESCRIPTION ● MECHANISM MICROCOMPUTER : IC4 (X32- : CD PLAYER UNIT) Processing Operation Pin No. Pin Name Application Remarks Description Not used. Low-fixed E2P_SCL Rom correction E2P I2C clock Not used. Low-fixed 5V electric potential GND electric potential Not used.
  • Page 13 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y MICROCOMPUTER’S TERMINAL DESCRIPTION Processing Operation Pin No. Pin Name Application Remarks Description ASTB Multiplex ASTB signal 3.3V driven Not used. Low-fixed 3.3V driven Not used. Low-fixed 3.3V driven 47~54 AD0~AD7 Multiplex address/data 3.3V driven BVdd Bus interface power supply...

  • Page 14: Test Mode

    KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y TEST MODE ● How to enter the test mode ● Special display when set to TUNER In order to enter the test mode, reset the unit while simulta- When in TUNER mode, if any of the following displays appear, neously pressing down [1] and [3] keys.
  • Page 15 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y TEST MODE ● Audio adjust mode ● MENU items Model with no DSP • Push the [ ] (NEXT) key for at least 1 second to enter the MENU. • By pressing [AUD] key for less than 1 second, the audio •...
  • Page 16 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y TEST MODE ● Special display when all lights are on Press for less than 1 second : CD mechanism error log display When all lights are on with the STANDBY source, the follow- During CD mechanism error log display; by pressing for ing displays are made when the keys shown below are pressed.
  • Page 17 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y TEST MODE 3. With all lights turned on and by pressing [AM] key for at 2. When initialization is complete, the following display will be least 1 second, the data on the Flash ROM (4M) is initial- made.
  • Page 18 ] key : Cursor Left 4. Press [ ] key for at least 3 seconds to display “RE-EN- code (KDC-MP628/MP7028/MP728) TER”. Then, re-enter the code using the method in above 1. While “– – – –” is being displayed, press [ ] key for at No.

  • Page 19: Switch Unit

    KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT SWITCH UNIT X16-2950-1x / X16-3122-72 (J76-0054-02) X16-2950-1x / X16-3122-72 (J76-0054-02) Q4 Q5 R23 R24 CP17 CP12 CP10 CP19 CP11 CP15 CP20 CP14 CP16 CP13 CP18 CP22 CP26 CP28...

  • Page 20: Pc Board (Component Side View)

    KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT X34-3xxx-xx (J76-0053-22) IC750 C630 C617 C612 C613 13 10 9 5 1 2 3 TH750 12 11 7 C757 CN600 R759 R762 D700 C702 D702 D701 L400 C634 C614 Q607 C606...
  • Page 21 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y TH750 C757 R202 C808 Q202 IC10 R201 C807 R803 C806 R805 C805 W201 IC103 IC200 IC451 X34-3xxx-xx C308 Ref. No. Address Ref. No. Address IC10 C309 IC60 IC80 IC102 IC103 IC200 IC300 IC450 WH100 R186 IC451 IC500 R165...
  • Page 22 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-3xxx-xx (J76-0053-22) R811 C804 Q802 R817 R763 IC800 R217 C206 Q209 R609 R208 Q203 R207 C310 C388 R321 D302 R311 D303 R382 C385 R300 R101 IC100 R387 R107 R384 R177 C353...
  • Page 23 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y W604 W603 W751 W401 Q609 W608 D401 R619 W612 R613 W607 C636/ W611 W616 C635/W609 C638/ R407 W615 R405 X34-3xxx-xx W610 R406 C637/ R640 Ref. No. Address Ref. No. Address W613 W614 IC100 Q205 R310 Q612 IC104 Q207...
  • Page 24 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y PC BOARD (COMPONENT SIDE VIEW) CD PLAYER UNIT X32-5740-0x (J76-0065-12) CP27 IC11 R150 X32-5740-0x Ref. No. Address IC11 Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 25 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y PC BOARD (FOIL SIDE VIEW) CD PLAYER UNIT X32-5740-0x (J76-0065-12) 12EJE-SW IOP- IOP+ CP28 ATEST AGND A3.3V REFOUTSV SHOCK LOS-SW LOCK HOLD DOUT DGND AGND C100 R104 WAIT CP10 CP9 S7.5V CP11 BU5V SGND TYPE LOE/LIM PON2 PON1...
  • Page 26 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y ELECTRIC UNIT (X34-3xxx-xx) ∗ ∗ ∗ W616 W615 CN600 D608 D609 5V PREOUT R640 C622 AUX COMMON TP608 ∗ C621 R638 R639 C638 10u16 AUX R TP609 P-NL R643 C631 10u16 P-NL 0.47 AUX L TP607 9.4V Q613...
  • Page 27 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y (E30-6292-15) C334 R342 R350 R367 10u16 2.7K 2.7K 3.3K P-NL ∗ C333 R343 R351 R368 Q612,613 10u16 2.7K 2.7K 3.3K D700 PRE- ∗ MUTE R711 1K C704 0.01 AUDIO D701 BUFFER AMP R308 R310 R311 C314 D703 22u16...
  • Page 28 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y A3.3V ∗ SW14 R367 3.3K SVR+B R368 ∗ ∗ 3.3K C769 C770 IC306 0.01 0.01 POWER R369 3.3K 8.0V IC750 R370 6.8V 3.3K 6.8V 6.8V R764 R765 TP751 4.3K R772 220 D755 R771 22K R371 3.3K D754 R750...
  • Page 29 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y TP108 RESET IC ∗ ∗ R136 R140 IC100 100K 100K ∗ ∗ ∗ 5.0V R137 R138 W200 TP100 PREOUT 100K 100K ∗ MUTE ∗ D200 D201 CP105 DRIVER R100 Q201 100K ∗ Q200 C100 C105 0.01 VREF R163 100K 5.0V...
  • Page 30 SIGN POWER DRIVER SWITCHING REGULATOR MD DET FREQUENCY CONTROL (X16-2520-00) SW(IC60) WH100 FL+B PON5V TP80 TP81 4.7uH IC80 FL+B Q80,81 13.4V VFD(57V) R186 MD DET 1.2V AVR SW 2.2K 1.2V SHDN TP111 13.4V : CL2011RXS(BCD) CPT184SCS(CDE) KDC-MP628/MP7028/MP728/MP8029/W7031/W7031Y ( X34-3xxx-xx (5/6)
  • Page 31 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y ∗ IC1,5 : XC6204B332MR Q10,20,30,40 : 2SB1565 : S2V60 IC3,4 : NJM2864F05-ZB Q11,12,43,51 : UMC2N : RB160L-40 IC10 : M5237ML-CF0J Q21,45,91 : 2SD2351(W) D21,40,207,302,303,600 IC60 : FA3687V : 2SA1577 : UDZS5.6B IC80 : LT3467A Q23,403 : DTC124EUA : HZU9.1(B1)-E...
  • Page 32 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y SWITCH UNIT (X16-xxxx-xx) REMOTE CONTROL VCC 3 SW5V 4.7K ∗ R15 270K 1.35V 3.3V R16 270K LNNF LNIN 2.4V RENF REIN 3.3V RSTC 2.4V BISC RELV SPECTRUM ANALYZER C1 0.01 BLUE LED SW C2 0.01 C6 0.01 0.01 GREEN 0.01...
  • Page 33 TP37 TP38 TP39 TP41 TP44 TP45 TP46 TP47 TP43 TP42 TP48 KDC-MP628/MP7028/MP728/MP8029/W7031/W7031Y (2/2) • DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments or/and units. X16-2950-1x / X16-3122-72 (2/2)
  • Page 34 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y CD PLAYER UNIT (X32-574x-xx) A3.3V S7.5V 2.4-4.2V 4CH BTL DRIVER 2.4-4.2V TP26 SLD+ 1.2-5.5V TP25 SLD+ SPD+ 7.5K 7.5K SLD+ TP28 SLD- 1.2-5.5V TP27 SLD- SPD- C1 1 C2 1 SLD- 7.5V VCC2 680P 680P VCC1 2.4V R30 100 0-5.0V...
  • Page 35 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y A3.3V 2.6-4.2V 2.6-4.2V TP31 SPD+ 1.0-5.0V TP32 SPD+ SPD+ TP33 SPD- 1.0-5.0V TP34 SPD- D3.3V SPD- 7.5V VCC1 R29 1K 0-5.0V MUTE TP35 0-3.0V SPIN TP68 1000P 1.5V TP105 D.GND 4.7K SPIN- TP94 1.5V RESET SPIN+ 2.0-3.0V TP36...
  • Page 36 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y 2SA1774 2SB1565 BA3830F 2SC4081 M5237ML-CF0J DTA123JK DTA124EUA DTC114YUA DTA143TUA DTC143TUA DTC124EUA DTC143ZE DTC144EUA 2SA1576A 2SC2713-F TP93 IOP2 2SC4617 NJM4580V-ZB TP92 IOP1 2SB1188 4.7K UMC2N TP91 C83 0.01 LB1930M-E TP90 TP89 C82 47P ADIN TP112 TP88 TP87 C81 47P...
  • Page 37 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y EXPLODED VIEW (CD MECHANISM) DPU1 DFPC1 (X32) φ : N09-4460-05 M1.7x8.0 : N09-4472-15 M1.7x2.5 : N09-6004-05 : N09-6007-05 M2x2 φ : N09-6051-05 2x5(BLK) : N19-2163-04 1.6 WASHER : N39-2020-46 M2x2 : N09-6108-05 M2x3.5 φ : N09-6155-05 Parts with the exploded numbers larger than 700 are not supplied.

  • Page 38: Exploded View (Unit)

    KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y EXPLODED VIEW (UNIT) 741 (only for Euro models) (for RM1) M2x2 : N09-6269-05 M2x2.5 : N09-6326-05 DME1 M1.7x2 : N09-6140-05 M2.6x6 : N78-2660-48 φ2x6 M2x2 : N09-6141-05 : N80-2006-48 (X34) φ2x8 W400 M2x2.5 : N09-6142-05 : N80-2008-43 φ1.7x4.5 φ3x5...

  • Page 39: Parts List

    ✽ H54-3343-03 INST. MANUAL (SPA, POR) ITEM CARTON CASE (KDC-MP728) K2 1C ✽ B07-3125-01 ✽ H54-3344-03 ESCUTCHEON M1E1 ITEM CARTON CASE (KDC-MP628) K3 1C ✽ B07-3125-01 ✽ H54-3346-03 ESCUTCHEON K4E2 ITEM CARTON CASE (KDC-W7031Y) E1 1C ✽ B07-3126-01 ✽ H54-3347-03...
  • Page 40 CHIP C 0.010UF K E1 : KDC-W7031Y E2 : KDC-W7031 K2 : KDC-MP728 Indicates safety critical components. K3 : KDC-MP628 K4 : KDC-MP7028 M1 : KDC-MP8029 (E : Europe K : North America M : Other Areas W : Without Europe)
  • Page 41 CHIP C 22UF E1E2 E1 : KDC-W7031Y E2 : KDC-W7031 K2 : KDC-MP728 Indicates safety critical components. K3 : KDC-MP628 K4 : KDC-MP7028 M1 : KDC-MP8029 (E : Europe K : North America M : Other Areas W : Without Europe)

  • Page 42: Electric Unit (X34-3Xxx-Xx)

    CHIP C 1.0UF E1 : KDC-W7031Y E2 : KDC-W7031 K2 : KDC-MP728 Indicates safety critical components. K3 : KDC-MP628 K4 : KDC-MP7028 M1 : KDC-MP8029 (E : Europe K : North America M : Other Areas W : Without Europe)
  • Page 43 ELECTRO 100UF 16WV E1 : KDC-W7031Y E2 : KDC-W7031 K2 : KDC-MP728 Indicates safety critical components. K3 : KDC-MP628 K4 : KDC-MP7028 M1 : KDC-MP8029 (E : Europe K : North America M : Other Areas W : Without Europe)
  • Page 44 CHIP R J 1/10W E1 : KDC-W7031Y E2 : KDC-W7031 K2 : KDC-MP728 Indicates safety critical components. K3 : KDC-MP628 K4 : KDC-MP7028 M1 : KDC-MP8029 (E : Europe K : North America M : Other Areas W : Without Europe)
  • Page 45 CHIP R J 1/10W K4 E1 : KDC-W7031Y E2 : KDC-W7031 K2 : KDC-MP728 Indicates safety critical components. K3 : KDC-MP628 K4 : KDC-MP7028 M1 : KDC-MP8029 (E : Europe K : North America M : Other Areas W : Without Europe)
  • Page 46 ZENER DIODE M1E1E2 E1 : KDC-W7031Y E2 : KDC-W7031 K2 : KDC-MP728 Indicates safety critical components. K3 : KDC-MP628 K4 : KDC-MP7028 M1 : KDC-MP8029 (E : Europe K : North America M : Other Areas W : Without Europe)
  • Page 47 2SA1774 TRANSISTOR M1K4 E1 : KDC-W7031Y E2 : KDC-W7031 K2 : KDC-MP728 Indicates safety critical components. K3 : KDC-MP628 K4 : KDC-MP7028 M1 : KDC-MP8029 (E : Europe K : North America M : Other Areas W : Without Europe)
  • Page 48 GEAR D13-2158-04 GEAR E1 : KDC-W7031Y E2 : KDC-W7031 K2 : KDC-MP728 Indicates safety critical components. K3 : KDC-MP628 K4 : KDC-MP7028 M1 : KDC-MP8029 (E : Europe K : North America M : Other Areas W : Without Europe)
  • Page 49 KDC-MP628/MP7028/MP728 MP8029/W7031/W7031Y PARTS LIST CAPACITORS 2 2 0 • Capacitor value CC45 Color* 010 = 1pF 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating 100 = 10pF 2 = Shape ... round, square, etc.

  • Page 50: Specifications

    ..... 182 x 53 x 155mm (7-3/16 x 2-1/16 x 6-1/10 inch) Usable Sensitivity (S/N : 20dB) ........45µV Weight ............1.50kHz (3.31lbs) KENWOOD follows a policy of continuous advancements Laser Diode ............... GaAlAs in development. Digital Filter (D/A) ......8 Times Over Sampling For this reason specifications may be changed without notice.

This manual is also suitable for:

Kdc-w7031/yKdc-mp7028Kdc-mp728Kdc-mp8029

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