Kenwood KDC-MP442U Service Manual
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Kenwood KDC-MP442U Service Manual

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CD RECEIVER
KDC-MP442U/MP6043U
KDC-W5544U/W5644UY
KDC-X493
SERVICE MANUAL
Panel assy
KDC-MP442U (A64-4719-02)
Panel assy
KDC-W5544U (A64-4720-02)
Panel assy
KDC-X493 (A64-4718-02)
Mounting hardware assy
(J22-0789-03)
* Screw (4x16)
* Screw set
(N84-4016-48)
(N99-1757-15)
* Depends on the model. Refer to the parts list.
KDC-MP442U
KDC-W5544U
KDC-X493
* DC cord
* DC cord
(E30-6428-05)
(E30-6671-05)
Lever
* Plastic cabinet assy
(D10-7049-04) x2
(A02-2755-23)
© 2009-1 PRINTED IN JA PAN
B53-0697-00 ( N ) 429
Panel assy
KDC-MP6043U (A64-4722-02)
Panel assy
KDC-W5644UY (A64-4721-02)
TDF SPARE-PANEL
MAIN UNIT NAME
TDF PARTS No.
KDC-MP442U
Y33-3060-10
KDC-MP6043U
Y33-3060-21
KDC-W5544U
Y33-3062-71
KDC-W5644UY
Y33-3062-71
KDC-X493
Y33-3060-11
* Remote controller assy (RC-547)
(A70-2085-15)
* Escutcheon
(B07-xxxx-xx)
This product uses Lead Free solder.
RoHS
This product complies with the
KDC-MP6043U
KDC-W5644U
TDF NAME
TDF-94DX
TDF-MP6043U
TDF-W5544U
TDF-W5544U
TDF-MP94D
Battery
(Not supplied)
* Carrying case
(W01-xxxx-xx)
directive for the European market.

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  • Page 1 CD RECEIVER KDC-MP442U/MP6043U KDC-W5544U/W5644UY KDC-X493 SERVICE MANUAL © 2009-1 PRINTED IN JA PAN B53-0697-00 ( N ) 429 Panel assy Panel assy KDC-MP442U (A64-4719-02) KDC-MP6043U (A64-4722-02) KDC-MP6043U KDC-MP442U Panel assy Panel assy KDC-W5544U (A64-4720-02) KDC-W5644UY (A64-4721-02) KDC-W5644U KDC-W5544U Panel assy...
  • Page 2 ELECTRIC UNIT (X34- ) ∗ IC240 SW5V DSP5V ∗ IC241 ∗ DME1 Q440,442, MEMORY ∗ 450,451, J420 ∗ PRE OUT CD MECHA SERVO IC260 460,462 (FRONT) BU5V ∗ X92-6320-00 PRE OUT (W/O USB MODEL) MUTE (REAR) Q441,461 PRE OUT SW MUTE (SW) X92-6360-00 IC200...
  • Page 3 CD PLAYER UNIT (X32-6260-00) MOTHER BOARD DPU1 (X34- ) SIGNAL A/B/C/E/F CD SI DATA S CD SO REQ A LEVEL BUCK CD CLK MSTOP SHIFT MSTOP CD REQ DSP REQ MRST MRST RF AMP SERVO SRAMSTB CD SRAMSTB PROCESSOR CD RST Z DET ZDET IN DATA M...
  • Page 4 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 COMPONENTS DESCRIPTION ● ELECTRIC UNIT (X34-630x-xx) Ref. No. Application / Function Operation / Condition / Compatibility IC10 Audio 8V REF / Power Supply Outputs 1.27V. IC70 Digital AVR for Panel & USB Switching regulator for USB&VBUS and FDC (5V).

  • Page 5: Components Description

    KDC-MP442U/MP6043U /W5544U/W5644UY/X493 COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition / Compatibility PAN5V When the base of Q5 goes Hi, PAN5V is supplied for IC2. Grid Reversing Driver When the base goes Hi, GRID1 is ON. Grid Reversing Driver When the base goes Hi, GRID2 is ON.

  • Page 6: Microcomputer's Terminal Description

    KDC-MP442U/MP6043U /W5544U/W5644UY/X493 MICROCOMPUTER’S TERMINAL DESCRIPTION ● SYSTEM μ-COM: IC302 on X34- (ELECTRIC UNIT) Truth Value Pin No. Pin Name Application Processing / Operation / Description Table External remote control input and panel remote REMO control input LX REQ M Communication request to slave unit...
  • Page 7 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing / Operation / Description Table Detects pulse width ROTARY CCW VOL key detection (Counterclockwise) TDF: 15-pulse/360°, 2-click/1-pulse Not used Output L fi xed VFD CS VFD control request...
  • Page 8 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing / Operation / Description Table ST DC DET Wrong connection detection E2P SDA I/O E2PROM I2C data input/output E2P SCL I/O E2PROM I2C clock input/output DC DET...

  • Page 9: Test Mode

    KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE ■ Display description Description of display Description ÷ ÷ ÷ ÷ ÷ ÷ ÷ A symbol “■” in the key column indicates that the key should be pressed and held for 1 second or longer. ■ Key layout TI/AUTO ←...
  • Page 10 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE Description Default values System Q/dB EQ NATURAL (FLAT) Simple DSP STANDBY (FLAT) Simple DSP BYPASS (Set up the path that does not go through the DSP) Beep Goes on (i.e., beeps) when the key is pressed briefl y...
  • Page 11 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE • Version and service information display (Sub-mode) * When “Version and service information display” is selected, “Destination terminal condition display” will be opened as default display. Description of display Description Destination “TYPE” indicates system μ-com (IC302) destination,...
  • Page 12 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE • CD information display mode (Sub-mode) Description of display Description Mechanism error log 1 (Latest) XX: Error number. “– –” is displayed in case there is no error. CD mecha- Mechanism error log 2 (Latest) nism error XX: Error number.
  • Page 13 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE ■ Test mode specifi cations in TUNER source Error is found in front-end (A1), etc. if indications below is displayed while in tuner source. Status Display Description Front-end (A48x) E2PROM data Front-end (A48x) E2PROM is still the default error (unspecifi...
  • Page 14 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE • FST adjustment mode Perform FST soft-mute adjustment. Note To enter into FST adjustment mode (Press and hold the key for 1 second) ■ In FM, the frequency changes to 98.3MHz Operations in the FST adjustment mode are as follows:...
  • Page 15 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE ■ Test mode specifi cations in CD source Display mode default: P-Time • Procedure in CD-DA media (KTD-02A) Display Description Every time pressed, jumps to the track shown below. No.9 → No.15 → No.10 → No.11 → No.12 → No.13 → No.22 Track up procedure →...
  • Page 16 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE ■ Audio-related test mode Procedure Note Enter the audio adjustment mode. When DUAL ZONE is ON: DUAL ZONE→FADER→BALANCE→BASS→MID→TRE→R-VOLUME→B.BOOST→ ■ TI/AUTO USER→HPF-F→HPF-R→V-OFFSET When DUAL ZONE is OFF: DUAL ZONE→FADER→BALANCE→BASS→MID→TRE→SUB-W→B.BOOST→ USER→HPF-F→HPF-R→LPF-SW→V-OFFSET About audio adjustment items (include both Audio Function Mode and Audio Setup Mode)
  • Page 17 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE ■ MENU-related test mode * In the TUNER source, run the unit in the normal operation (PRESET call operation) mode. Procedure Note Press [SEARCH] key briefl y (Unit itself) Continuous forwarding by remote control is prohibited Press [DNPP/SBF] key and [DIRECT] key briefl...
  • Page 18 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE ■ Clearing DC offset error detection data (E2PROM data clearing) Procedure Note Resetting while [PLAY/PAUSE] + [FAV] is being pressed Entering DC offset error display mode. While “----” is displayed, power can be ON. Even if the DC offset error detection is running, it shall be possible to move to this condition.
  • Page 19 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TEST MODE ■ ROM data transfer * This function is shown in the MENU only when the source is STANDBY and thus in reality it is operational only in the case of STANDBY source. Procedure Display Description While pressing and holding [SEARCH] key and [SRC] All lights ON.

  • Page 20: Rom Data Transfer Processes

    KDC-MP442U/MP6043U /W5544U/W5644UY/X493 ROM DATA TRANSFER PROCESSES When replacing front-end (A48x) of mother unit (X34-), or Forced Power OFF information (For maintenance) when adding or replacing ROM correction (program cor- Serial number (For maintenance) rection with ROM IC (IC300)), the following activities are E2PROM data check data (For internal check) required.
  • Page 21 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 ROM DATA TRANSFER PROCESSES Turn power on. Install new front-end (A48x). Press and hold the [1] and [3] keys and press reset button. No ROM correction or other data status. (Enter the system in the test mode.) Press [B.BOOST] key. (ROM data System enters data trans- fer mode.)
  • Page 22 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 ROM DATA TRANSFER PROCESSES 4. In case of applying a new ROM correction when front- Turn power on. end (A48x) is replaced (There is ROM correction data.) Press and hold the [1] and [3] keys, press reset button. (Enter 5.
  • Page 23 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 ROM DATA TRANSFER PROCESSES Press key. (Exit ROM data transfer mode.) Turn power on. Turn power off. Press and hold the [1] and [3] keys press reset button. (Enter the system in the test mode.) Remove front-end (A48x).

  • Page 24: Installer Memory Specifications

    KDC-MP442U/MP6043U /W5544U/W5644UY/X493 INSTALLER MEMORY SPECIFICATIONS At specialists (or specialty stores), when the installer sends • The contents read out by the call key shall be refl ected the vehicle back to the user, they may make the store-rec- only to the current source at the time→EQ curve is ommended audio confi...
  • Page 25 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 PC BOARD PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT SWITCH UNIT X16-6500-10 (J76-0568-02) X16-6500-10 (J76-0568-02) VCC VOUT TP30 MIC-N R101 D101 MIC-P R102 D102 PAN-DET RTRY-CW R103 D103 RTRY-CCW R104 D104 R105 REMO D105 D106...

  • Page 26: Pc Board (Component Side View)

    KDC-MP442U/MP6043U /W5544U/W5644UY/X493 PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT X34-630x-xx (J76-0567-02) C223 J400 R213 IC200 13 11 12 8 4 3 2 J420 R209 C217 R208 R210 R206 R204 C451 C452 C461 C462 R207 C442 C441 Q200 C206 R442 D605...
  • Page 27 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 X34-630x-xx Ref. No. Address IC10 C217 IC70 IC200 R102 IC241 IC260 R132 C133 IC301 C131 R131 IC302 C130 IC303 IC500 D164 D165 L160 C257 X240 IC70 W601 IC20 Q130 Q440 Q442 C616 Q450 Q451 C612 R616 R619 Q460...
  • Page 28 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-630x-xx (J76-0567-02) TP17 TP12 C204 TP14 TP20 C216 C207 TP10 TP18 TP15 TP204 TP19 R203 C205 C200 R115 R120 C220 C202 C201 TP23 TP16 D112 TP201 TP80 TP21 Q113 Q114 R116...
  • Page 29 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 X34-630x-xx Ref. No. Address TP424 TP422 IC150 TP423 TP618 TP460 TP617 Q110 Q111 Q112 D410 Q113 W480 Q114 TP498 Q115 Q441 Q461 C488 TP480 TP481 Q481 R483 TP496 TP497 TP484 TP485 TP486 TP487 TP488 TP489 C278 C279 TP490...
  • Page 30 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 PC BOARD (COMPONENT SIDE VIEW) X32 B/2 12EJE ORG LOS GRE GND BLU R105 CD PLAYER UNIT R102 X32-6260-00 A/2 (J76-0572-02) AGND CD RST IOP+ BUCK A3.3V R119 R177 CP11 R101 R121 12EJE SW R171 R118 LOS SW...
  • Page 31 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 PC BOARD (FOIL SIDE VIEW) X32 B/2 CD PLAYER UNIT X32-6260-00 A/2 (J76-0572-02) R127 R120 R128 CP15 R166 CP12 C102 R167 R68 R69 R132 R131 X32-6260-00 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 32 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 PRE OUT ANT. ∗ ELECTRIC UNIT (X34-6xxx-xx) J420 W481 TP480 FRONT-END A480: For European models ∗ A480 A481: For other models RFGND C482 ANTINPUT 0.01 TP496 Q440,442 Q450,451 Q460,462 PRE OUT PRE OUT PRE OUT AM+B MUTE SW...
  • Page 33 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TP315 TP317 L300 BU5V-1 4.7uH IC301 ∗ ∗ R325 R330 TP316 BU5V 100K 100K VOUT PON5V C306 5.0V SYSTEM u-COM RESET CP306 CONTROL 4.7K R300 2.2M R315 2.2K REMO ∗ R316 100 LX REQ M 0V or 1.6V or 0-5.0V...
  • Page 34 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 ∗ 5L I/F J400 TP404 TP629 C212 0.22 TP631 C210 0.22 TP200 TP405 POWER 5.0V IC200 R411 5.6V 5.7V IC303 C403 MUTE 0.01 D403 LOGIC D408 D406 5.5V TP630 C208 TP201 C214 0.22 TP628 0.22 ∗ DSP5V IC240...
  • Page 35 OUTPUT DIGITAL MODULE 1.0V RESET R130 100K PANEL TP606 BU5V & USB Q601 A600 ∗ Q130 5.0V SMALL LAMP 22uH DET SW TP60 TP70 BLUETOOTH MODULE TP616 SWRGND CN600 KDC-MP442U/MP6043U/W5544U/W5644UY/X493 (1/2) SIGNAL LINE GND LINE ∗ B LINE X34-630x-xx (4/5)
  • Page 36 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 IC10 : M5237ML-CF0J IC70 : LT3685EMSE IC150 : BD6538G IC200 : E-TDA7851A 2SB1565 IC240 : AK7600VF IC241 ∗ 1 10A IC260 : E-TDA7415CB 0023-05) IC301 : XC6120N362N1 IC302 ∗ IC303 : 74HC2G02DP IC500 : E-TDA7478AD IC600 : NJM4565V-ZB...
  • Page 37 LEFT 2 KEYS CENTER BOTTOM EJECT KEY TRIANGLE DISC GUIDE 3 KEYS DISC GUIDE C105 TP61 TP60 C106 LEFT SUB-ILLUMI CONTROLLER C103 CENTER 3-KEY ILLUMI CONTROLLER 1000P C102 C104 R117 1000P 0.01 RIGHT SUB-ILLUMI R118 R120 CONTROLLER KDC-MP442U/MP6043U/W5544U/W5644UY/X493 (2/2) X16-6500-10 (1/2)
  • Page 38 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 (1G-3G) (3G) (2G) (1G) col5 col3 col1 col3 col1 col3 col1 col6 col4 col2 col4 col2 col4 col2 (1G) col3 col3 col3 col1 col1 col1 (1G-3G) CAUTION : For continued safety, re place safe ty critical com po nents only with manufacturer’s rec om mend ed parts (refer to parts list).
  • Page 39 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 CD PLAYER UNIT (X32-6260-00) (A/2) MECHA. (X92- ) SLED OUT /LOAD 4ch BTL DRIVER TP123 TP128 1.7V ZDET 7.5V POWVCC1 R132 100 TP124 LOADING & POWGND1 SLED IN SLED TP127 /EJECT SLIN MOTOR VO1- R131 200K LDIN SPDL+...
  • Page 40 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 ZDET ZDET D1.5V DRVMUTE B3.3V-2 B3.3V TP95 B3.3V CD REQ TP93 TP94 OUTPUT ZDET TP68 B3.3V B3.3V 3.3V ZDET CONTROL SIGNAL 3.3V INVERTER AGND DVSS3R 1.7V TP92 R112 4.7 R28 1K 3.3V DVDD3R DSP RST 3.3V R113 4.7...
  • Page 41 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 TP31 FCS- TP32 TRK- A3.3V TP33 TRK+ TP34 FCS+ TP59 RFRP TP37 1.5V DPU1 TP38 TP60 (X92- ) TP40 PD R104 OPTICAL 2.2M TP41 C+D R103 PICKUP 2.3V TP42 F 0.2V TP43 A AVSS3 1.7V TP44 B 2.0V...
  • Page 42 KDC-MP442U/MP6043U /W5544U/W5644UY/X493 EXPLODED VIEW (CD MECHANISM) : N09-6108-15 : N09-6426-15+ : N09-6735-05 : N09-6737-15 : N09-6738-15 : N19-2335-14 : N35-2003-48 : N39-1720-48 (X32) DPU1 (X32) Parts with the exploded numbers larger than 700 are not supplied.

  • Page 43: Exploded View (Unit)

    KDC-MP442U/MP6043U /W5544U/W5644UY/X493 EXPLODED VIEW (UNIT) Batteries for RC1 DME1 : N24-3015-48 : N80-2006-48 : N80-2008-43 : N86-2604-43 : N86-2606-48 : N83-3005-48 : N83-3016-48 : N86-2604-43 : N80-3008-48 : N89-3008-48 (X34-) W481 (X16-) (X34-) WH160 (X34) (X34) A480 or A481 (X34-) Depends on the models.

  • Page 44: Parts List

    COMPRESSION SPRING (REL) RK73FB2B122J CHIP R 1.2K J 1/8W R52 ,53 RK73FB2B471J CHIP R J 1/8W ✽ H54-4524-03 ITEM CARTON CASE K : KDC-X493 K1 : KDC-MP442U M1 : KDC-MP6043U Indicates safety critical com po nents. E1 : KDC-W5544U E2 : KDC-W5644UY...
  • Page 45 68PF RK73GB2A101J CHIP R J 1/10W CK73GB1C104K CHIP C 0.10UF CK73FB0J106K CHIP C 10UF RK73GB2A000J CHIP R J 1/10W K : KDC-X493 K1 : KDC-MP442U M1 : KDC-MP6043U Indicates safety critical com po nents. E1 : KDC-W5544U E2 : KDC-W5644UY...
  • Page 46 ANALOGUE IC C217 CK73FB1C105K CHIP C 1.0UF C222 CK73GB1A105K CHIP C 1.0UF MFI341S2162 MICROPROCESSOR IC C261 CK73GB1A474K CHIP C 0.47UF K : KDC-X493 K1 : KDC-MP442U M1 : KDC-MP6043U Indicates safety critical com po nents. E1 : KDC-W5544U E2 : KDC-W5644UY...
  • Page 47 J 1/10W R102-104 RK73EB2E102J CHIP R 1.0K J 1/4W L33-2365-05 CHOKE COIL ASSY R110,111 RK73PB2H561J CHIP R J 1/2W K : KDC-X493 K1 : KDC-MP442U M1 : KDC-MP6043U Indicates safety critical com po nents. E1 : KDC-W5544U E2 : KDC-W5644UY...
  • Page 48 R523,524 RK73EB2E101J CHIP R J 1/4W R337 RK73GB2A471J CHIP R J 1/10W R525,526 RK73EB2E102J CHIP R 1.0K J 1/4W K : KDC-X493 K1 : KDC-MP442U M1 : KDC-MP6043U Indicates safety critical com po nents. E1 : KDC-W5544U E2 : KDC-W5644UY...
  • Page 49 TRANSISTOR D10-7003-03 KRC403-P DIGITAL TRANSISTOR D13-2445-04 GEAR 2SC4081 TRANSISTOR D13-2446-04 GEAR 2SB1565 TRANSISTOR D13-2448-04 GEAR 2SC4081 TRANSISTOR D13-2449-04 GEAR K : KDC-X493 K1 : KDC-MP442U M1 : KDC-MP6043U Indicates safety critical com po nents. E1 : KDC-W5544U E2 : KDC-W5644UY...
  • Page 50 S68-0921-05 PUSH SWITCH X94-2090-00 SPINDLE MOTOR ASSY X94-2100-00 FEED MOTOR ASSY (LOAD/SLED) DPU1 2B ✽ X93-2280-00 OPTICAL PICKUP ASSY K : KDC-X493 K1 : KDC-MP442U M1 : KDC-MP6043U Indicates safety critical com po nents. E1 : KDC-W5544U E2 : KDC-W5644UY...

  • Page 51: Specifications

    Preout level/Load (CD) Maximum supply current ..........500mA KDC-X493 ..........4000mV/10kΩ File system ............. FAT16/32 KDC-MP442U ..........2500mV/10kΩ MP3 decode ..Compliant with MPEG-1/2 Audio Layer-3 Preout impedance ............≤600Ω WMA decode .... Compliant with Windows Media Audio AAC decode ..........AAC-LC “.m4a” fi les...
  • Page 52 Operating voltage (10.5~16V allowable) ....... 14.4V Maximum current consumption ........10A Installation Size (W x H x D) .....182 x 53 x 155mm Weight ................1.2kg KENWOOD follows a policy of continuous advancements in development. For this reason specifi cations may be changed without notice. DANGER: Please do not look at the laser beam directly during re pair or operation check.

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