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Kenwood KDC-MP638U Service Manual
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Kenwood KDC-MP638U Service Manual

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CD RECEIVER
KDC-MP638U/W7041U
/W7141UY/X692/X7009U
SERVICE MANUAL
TDF SPARE-PANEL
MODEL
TDF PANEL No. TDF NAME
KDC-X692
Y33-2940-62
KDC-MP638U
Y33-2940-63
KDC-W7041U/W7141UY
Y33-2940-65
KDC-X7009U
Y33-2940-67
KDC-MP638U
(K type)
KDC-W7041U
KDC-W7141UY
(E type)
KDC-X692
(K type)
KDC-X7009U
(M type)
DC cord (K,M type)
Plastic cabinet assy (M type)
(E30-6428-05)
(A02-2757-03)
DC cord (E type)
Carrying case
(E30-6671-05)
(W01-1664-05): KDC-X692
(W01-1710-05): K,E type
Screw set (KDC-X692)
(N99-1790-05)
TDF-87DX
TDF-MP87D
TDF-W7041U
TDF-X7009U
Remote controller assy
(A70-2085-05):
Compact disc
(W01-1723-05)
Cover (KDC-X692)
Screw set (K,M type)
(F19-1475-04)
(N99-1757-15)
© 2008-3 PRINTED IN JA PAN
B53-0627-00 ( N ) 429
CD MECHANISM EXTENSIONCORD (30P) : E39-1014-05
KDC-MP638U
KDC-W7141U
KDC-X692
KDC-X7009U
except KDC-W7041U
SIZE AA BATTERY
(Not supplied)
RC-547
Lever
(D10-7012-04) x2
Screw set (K,M type)
(N99-1730-35)
This product uses Lead Free solder.
This product complies with the
Panel assy
(A64-4427-02)
Panel assy
(A64-4429-02): KDC-W7041U
(A64-4430-02): KDC-W7141UY
Panel assy
(A64-4426-02)
Panel assy
(A64-4432-02)
Escutcheon
(B07-3235-03): KDC-X692
(B07-3238-03): K,E,M type
Mounting hardware assy
(J22-0011-03)
RoHS
directive for the European market.

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Summary of Contents for Kenwood KDC-MP638U

  • Page 1 CD RECEIVER KDC-MP638U/W7041U /W7141UY/X692/X7009U SERVICE MANUAL © 2008-3 PRINTED IN JA PAN B53-0627-00 ( N ) 429 TDF SPARE-PANEL CD MECHANISM EXTENSIONCORD (30P) : E39-1014-05 MODEL TDF PANEL No. TDF NAME KDC-X692 Y33-2940-62 TDF-87DX KDC-MP638U Y33-2940-63 TDF-MP87D KDC-W7041U/W7141UY Y33-2940-65 TDF-W7041U...
  • Page 2 KDC-MP638U/W7041U /W7141UY/X692/X7009U BLOCK DIAGRAM (X34-579) BACK UP AUX IN LX BUS Q371,377 Q370,372-376 Q400 PRE OUT MUTE (F/R SW) AM+B MUTE IC480 (FST) IC530 IC450 SW5V MUTE E2PROM POWER E-VOL BU5V DRIVER SP OUT FM/AM (FL/FR/RL/RR) CD/USB Q120 B.U DET...
  • Page 3 KDC-MP638U/W7041U /W7141UY/X692/X7009U BLOCK DIAGRAM MOTHER CD PLAYER UNIT (X32-6130-00) BOARD (X34- ) DPU1 SRAMSTB SRAMSTB SIGNAL A,B,C,E,F BUCK BUCK PIO0 PIO0 RF AMP MRST MRST BSIF ST REQ BSIF ST REQ VREF SERVO BSIF GATE BSIF GATE PROCESSOR BSIF DATA...
  • Page 4 KDC-MP638U/W7041U /W7141UY/X692/X7009U COMPONENTS DESCRIPTION ● ELECTRIC UNIT (X34-579x-xx) Ref. No. Application / Function Operation / Condition / Compatibility IC10 Audio8V Ref Power Supply Output 1.27V. IC20 Regulator Power supply for BU3.3V. IC60 Switching Regulator Power supply for 65V FL+B. (to PANEL)
  • Page 5 KDC-MP638U/W7041U /W7141UY/X692/X7009U COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition / Compatibility Q352 4VPRE+B Protect When 4VPRE+B is overcurrent, Q352 turn Q350 off. Q353,354 4VPRE+B SW When Q354’ Base goes Hi, Q353 is ON. Q370,372~376 Pre-out mute SW When a base gose Hi, Pre-out is set to mute.
  • Page 6 KDC-MP638U/W7041U /W7141UY/X692/X7009U MICROCOMPUTER’S TERMINAL DESCRIPTION ● SYSTEM MICROCOMPUTER 30624MGPB77GP (X34: IC500) Truth Pin No. Pin Name Application Processing / Operation / Description Value Table WIRED_REMO Remote controller input Pulse width detection RDS_QUAL RDS decoder QUAL input terminal Not used. (In models without RDS) Output L fi...
  • Page 7 KDC-MP638U/W7041U /W7141UY/X692/X7009U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing / Operation / Description Value Table Panel LED H: ON, Hi-Z: OFF PON_ILL FL fi lament power supply Turned OFF when the display is black out. FL bias power supply control Turned OFF when panel is dismounted/opened.
  • Page 8 KDC-MP638U/W7041U /W7141UY/X692/X7009U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing / Operation / Description Value Table L: Mute ON, Independent setup of time constant 10ms, H: In normal condition MUTE_2 IC-2 SW MUTE control Shall be used together with MUTE_PRE_SW...
  • Page 9 KDC-MP638U/W7041U /W7141UY/X692/X7009U MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Pin No. Pin Name Application Processing / Operation / Description Value Table G_X_OUT Detection of X direction movement of G analyzer Not used. (In models without G antenna) Output L fi xed AVSS Not used Output L fi...
  • Page 10 KDC-MP638U/W7041U /W7141UY/X692/X7009U MICROCOMPUTER’S TERMINAL DESCRIPTION w CD_MOTOR, CD_LOEJ CD_MOTOR CD_LOEJ Standby Eject Load Brake Hi-z e AFS process RDS_AFS_M Status AFS LOW No sound output AF search AFS MID There is sound output in AF search. AFS HIGH Hi-Z Normal reception...
  • Page 11 KDC-MP638U/W7041U /W7141UY/X692/X7009U MICROCOMPUTER’S TERMINAL DESCRIPTION ● SUB MICROCOMPUTER 92CD28AFG6VV1 (X34: IC700) Pin No. Pin Name Application Processing / Operation / Description MRST Reset L: RESET, H: In normal condition STOP signal from system μ-com(Momentary power down H: Normal MSTOP detection / Recovery to low power consumption mode)
  • Page 12 KDC-MP638U/W7041U /W7141UY/X692/X7009U MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Application Processing / Operation / Description CD_MUTE Mute request to system μ-com L: Mute request, H: While in normal REQ_M REQ signal to system μ-com L: Request IPOD_RST RESET BOOT Terminal for writing FLASH...
  • Page 13 KDC-MP638U/W7041U /W7141UY/X692/X7009U MICROCOMPUTER’S TERMINAL DESCRIPTION ● PANEL MICROCOMPUTER 703265HYJA501 (X16-625: IC4) Pin No. Pin Name Application Processing / Operation / Description AVREF0 3.3V: Always connect to the power supply. AVSS 0V: Always connect directly to ground. Output LOW fi xed AVREF1 3.3V: Always connect to the power supply.
  • Page 14 KDC-MP638U/W7041U /W7141UY/X692/X7009U MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Application Processing / Operation / Description LED ON: HI PWM_MULTI Illumi control of MULTI LED OFF: LOW NC (DDI) JTAG terminal JTAG terminal, Mask is open. NC (DDO) JTAG terminal JTAG terminal, Mask is open.
  • Page 15 KDC-MP638U/W7041U /W7141UY/X692/X7009U MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Application Processing / Operation / Description BVDD 105~120 D0-D15 Data input 121~126 A16-A21 Address output 127,128 Output LOW fi xed 129~132 KR4-KR1 Key return input Output LOW fi xed 134~138 KS5-KS1...
  • Page 16 KDC-MP638U/W7041U /W7141UY/X692/X7009U TEST MODE ● How to enter the test mode Soft Mute adjustment Press and hold the [1] and [3] keys and reset. (While ”----” is being displayed, power can be ON for 30 FM Key FM Key minutes.)
  • Page 17 KDC-MP638U/W7041U /W7141UY/X692/X7009U TEST MODE Seek Stop Level Adjustment (Manual) • AUTO 98.1 … • Forced WIDE 98.1 (Display) MNN_3.98V : When at Normal (Local OFF) … (Display) MNL_4.44V : When at Local (Local ON) • Forced MIDDLE … 98.1 • Forced NARROW 98.1...
  • Page 18 KDC-MP638U/W7041U /W7141UY/X692/X7009U TEST MODE keys in 3 steps: L15↔0↔R15. (Default value: 0) How to transfer ROM data • Bass/Middle/Treble Level are adjusted by the VOL knob q Enter the Test mode (All lights go on). and [ ] / [ ] keys in 3 steps: -8↔0↔8.
  • Page 19 KDC-MP638U/W7041U /W7141UY/X692/X7009U TEST MODE ● Dual Zone ● Special displays while all lights are on • If the [AUTO] or [TI] keys is pressed briefly while in a When all lights are on with STANDBY source, if the fol- source other than STANDBY, 2ZONE is switched be- lowing keys are pressed, the following messages are dis- tween ON / OFF.
  • Page 20 KDC-MP638U/W7041U /W7141UY/X692/X7009U TEST MODE Table 1-Version & Service information display mode Table 2-CD information display mode Key pressed briefl y: Version is displayed I2C communication condition and CD mechanism error log (Display) C0713WK__SYS1.23 display (Display) STYPE: xx_PAN1.11 (Display) I2C_●●____________ (Display) PTYPE: x__MEM3.21a (Display) ERR_1-▲▲, 2-▲▲, 3-▲▲...
  • Page 21 KDC-MP638U/W7041U /W7141UY/X692/X7009U TEST MODE played. <MONO FL supporting model + 64COL FL / FLASH ROM At the completion of the deletion, “Erase_OK!!” is dis- PANEL> played. If the “Erase_NG!!!!!!” is displayed, it indicates that the _Mother : MONO NG !
  • Page 22 KDC-MP638U/W7041U /W7141UY/X692/X7009U TEST MODE ● Clearing backup / installer memory & CD mech- ● Clearing DC offset error detection information anism information & service information & DC (Clear E2PROM data in the front end) offset error detection information 1. Press and hold [3] and [6] keys and reset-start to go into the DC offset error display mode.
  • Page 23 KDC-MP638U/W7041U /W7141UY/X692/X7009U TEST MODE MENU. 6. Release the test mode. (Refer to “How to clear the test When “Security” is displayed, press [ ] key for 1 sec- mode”.) ∗ Note: All clear cannot be used to clear the security ond or longer to enter the security registration mode.
  • Page 24 KDC-MP638U/W7041U /W7141UY/X692/X7009U DC OFFSET ERROR ● Cancel Condition ∗ The purpose is to shut down audio output. Basically, the logic sets the audio output system signal line when • Press the Reset terminal on the main body. Or set Back- in Standby source.
  • Page 25 KDC-MP638U/W7041U /W7141UY/X692/X7009U PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT SWITCH UNIT X16-625x-xx (J76-0485-02) X16-625x-xx (J76-0485-02) VOUT TP48 CP38 CP11 CP14 CP10 CP21 CP16 CP20 CP18 CP30 TP57 TP58 CP23 TP13 X16-625x-xx RXDA0 X16-625x-xx TP14 CP27 TP15 TP12 Ref.
  • Page 26 KDC-MP638U/W7041U /W7141UY/X692/X7009U PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT X34-579x-xx (J76-0483-22) J420 IC450 D451 R452 13 11 12 8 4 3 2 R451 J361 R456 R153 R145 CN200 C353 IC350 D412 R361 Q150 Q143 W400 Q350 D201 D200 R362 IC480...
  • Page 27 KDC-MP638U/W7041U /W7141UY/X692/X7009U EJECT DISPLAY UNIT X15-1190-10 (J76-0486-02) R172 D142 IC10 O G I CN190 N200 C200 01 D200 IC300 IC20 R728 C301 R730 R963 C713 X34-579x-xx Ref. No. Address Ref. No. Address IC10 R726 IC20 L705 /R702 IC60 IC80 IC300...
  • Page 28 KDC-MP638U/W7041U /W7141UY/X692/X7009U PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-579x-xx (J76-0483-22) TP637 TP633 TP622 TP636 C900 C901 TP632 TP620 TP618 TP588 TP617 TP628 TP626 C475 C909 TP709 TP582 TP643 R483 R767 TP652 TP702 TP717 BOOT TP642 TP635 TP583 TP639 TP606...
  • Page 29 KDC-MP638U/W7041U /W7141UY/X692/X7009U DISPLAY UNIT X15-1190-10 (J76-0486-02) TP507 TP710 TP712 R410 R411 R379 R373 R385 R378 R372 R384 W401 X34-579x-xx TP905 Ref. No. Address TP906 IC510 TP521 TP522 TP523 TP524 TP525 TP526 TP596 TP527 TP598 TP528 TP519 TP530 TP520 Q120 Q122...
  • Page 30 KDC-MP638U/W7041U /W7141UY/X692/X7009U PC BOARD (COMPONENT SIDE VIEW) CD PLAYER UNIT X32-6130-00 (J76-0495-12) R261 R216 C104 R281 X32-6130-00 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 31 KDC-MP638U/W7041U /W7141UY/X692/X7009U PC BOARD (FOIL SIDE VIEW) SGND S7.5V CD PLAYER UNIT LO/EJ DRVMUTE MOTOR X32-6130-00 (J76-0495-12) SPDL+ R288 LOE-SW 8-SW SRAM MRST PIO0 AMUTE SLD- SLD+ LOAD A.GND EJECT SPDL- BUCK R240 R289 BU1.5V C101 R241 R246 R231 D1.5V...
  • Page 32 KDC-MP638U/W7041U /W7141UY/X692/X7009U J420 AUX IN PRE OUT REAR (X34-579x-xx) J410 J361 J361 TP710 FRONT FRONT R415 TP709 5L I/F TP711 D410 D422 D428 D411 D420 D423 D412 D421 CH ESD REAR FRONT R372 R373 R378 R379 R384 R385 Q370 Q372...
  • Page 33 KDC-MP638U/W7041U /W7141UY/X692/X7009U TP588 C476 TP595 BU5V 1u16 R453 C452 10u16 4.3K C475 6.8V IC510 IC450 AGND C511 VOUT 0.01 5.0V 0-4.4V R433 C450 R534 R450 R194 POWER 2.2K WIRED REMO TP582 R195 TP570 RDS QUAL R210 0 or 1.6 or 2.5 o 3.4 or 5.0V...
  • Page 34 KDC-MP638U/W7041U /W7141UY/X692/X7009U TP587 BU5V BU5V Q120 Q120 D121 PON5V PON5V R121 R127 BU DET IC520 CORRECTION R120 Q123 D122 SURGE Q123 Q122 R128 ACC DET TP586 100K D123 Q122 TP596 R134 R133 Q142,143 C509 P-CON TP585 PROTECTION 0.01 TP598 D140...
  • Page 35 KDC-MP638U/W7041U /W7141UY/X692/X7009U to DC CORD FUSE 10A FUSE TP636 SPISOMI 0.015 SPISIMO SPINSS NC31 Q123 3.3V R757 100K SURGE CLOCKOUT iPod ROSC 3900u16 AUTHENTIFICATION R758 47K NC33 MODE2 COPROCESSOR NC34 R129 R741 3.3K 3.3V NC35 TP632 IC752 I2CSDA NC36 R134...
  • Page 36 Q702 • DC voltages are as measured with a high impedance KDC-MP638U/W7041U/W7141UY/X692/X7009U (1/2) volt me ter. Val ues may vary slight ly due to vari a tions between in di vid u al in stru ments or/and units.
  • Page 37 KDC-MP638U/W7041U /W7141UY/X692/X7009U (X16-625x-xx) ILL+B PAN5V PAN5V GREEN ROM CORRECTION 3.3V 3.3V CP32 SW3.3V 3.3V GND1 VOUT 0.01 GND2 REMO. CON. FLGND RECEIVER DGND ILL+B 79,80 3.3V FLASH ROM 3.3V BYTE VSS2 3.3V 3.3V 3.3V CP10 3.3V 3.3V 2.2K 3.3V NC11(NC)
  • Page 38 KDC-MP638U/W7041U /W7141UY/X692/X7009U : MX231613TI9Z8 Q1-4 : DTC143ZE : BR24L04FV-W Q5,15 : 2SC4081 : 703265HYJA501 : 2SB1689 : PIC95603 : 2SC2713-F : 74HC2G08DP : 2SB1260 IC10 : S-1132B33U5T1G D1,50-59 : B30-1780-05 GND LINE : B30-1566-05 128 x 32 DOTS B LINE...
  • Page 39 KDC-MP638U/W7041U /W7141UY/X692/X7009U CD PLAYER UNIT (X32-6130-00) 4CH BTL DRIVER 1.5V POWVCC1 TP203 POWGND1 TP31 SLIN R207 TP204 SPDL- VO1- LDIN TP32 BIASSW TP33 SPDL+ VO1+ C20 33P TP34 TP28 EJECT R20 180K VO2- TP55 TP26 R27 9.1K LOAD VO2+ TP54...
  • Page 40 KDC-MP638U/W7041U /W7141UY/X692/X7009U 3.3V R233 R287 16.934MHz TP44 FCS+ 0.022 TP47 TRK- TP46 1.9V TRK+ 2200P TP45 DPU1 FCS- (X92- ) 0.033 0.033 TP84 TP71 2.1V TP40 OPTICAL TP41 PICKUP 87.7kHz TP72 1.8V 2.5V 16.934MHz 1.5V 2.1V DVSS3 1 1.7V TP42 88.8kHz...
  • Page 41 KDC-MP638U/W7041U /W7141UY/X692/X7009U EXPLODED VIEW (CD MECHANISM) DPU1 DFPC1 (X32) : N09-4460-15 φ M1.6x6.0 : N09-6317-05 M1.7x2.5 : N09-6004-15 M2x2 : N09-6007-15 2x5(BLK) : N09-6051-15 φ 1.6 WASHER : N19-2163-04 : N39-2020-48 M2x2 2x3.5 : N09-6108-15 φ : N09-6155-15 φ Parts with the exploded numbers larger than 700 are not supplied.
  • Page 42 KDC-MP638U/W7041U /W7141UY/X692/X7009U EXPLODED VIEW (UNIT) SIZE AA BATTERY (Not supplied) DME1 : N80-2006-48 : N80-2008-43 : N83-3005-48 : N84-2005-43 : N84-2005-48 : N84-2606-43 (X34) : N80-3008-48 (X34) W400 WH190 : N83-3010-43 (X15-119) : N83-3016-48 : N86-2606-48 (X34) A400 (X16) (X16)
  • Page 43 LED (1608 BLUE) K3E3E4 ✽ H54-4330-03 ITEM CARTON CASE D10-19 B30-1779-05 LED (1608_SR) K3E3E4 E3 : KDC-W7041U E4 : KDC-W7141UY (Europe) Indicates safety critical com po nents. K2 : KDC-X692 K3 : KDC-MP638U (North America) M2 : KDC-X7009U (Other Areas)
  • Page 44 CK73EB0J226K CHIP C 22UF C61-64 CK73GB1H104K CHIP C 0.10UF RK73GB2A473J CHIP R J 1/10W E3 : KDC-W7041U E4 : KDC-W7141UY (Europe) Indicates safety critical com po nents. K2 : KDC-X692 K3 : KDC-MP638U (North America) M2 : KDC-X7009U (Other Areas)
  • Page 45 CHIP C 1.0UF R246 RK73GB2A104J CHIP R 100K J 1/10W C142 CD04AS1H3R3M ELECTRO 3.3UF 50WV E3 : KDC-W7041U E4 : KDC-W7141UY (Europe) Indicates safety critical com po nents. K2 : KDC-X692 K3 : KDC-MP638U (North America) M2 : KDC-X7009U (Other Areas)
  • Page 46 CHIP-COM 100 J 1/16W C513 CK73GB0J225K CHIP C 2.2UF CP503 RK74GA1J101J CHIP-COM 100 J 1/16W E3 : KDC-W7041U E4 : KDC-W7141UY (Europe) Indicates safety critical com po nents. K2 : KDC-X692 K3 : KDC-MP638U (North America) M2 : KDC-X7009U (Other Areas)
  • Page 47 J 1/10W R211 RK73GB2A104J CHIP R 100K J 1/10W R451 RK73GB2A473J CHIP R J 1/10W E3 : KDC-W7041U E4 : KDC-W7141UY (Europe) Indicates safety critical com po nents. K2 : KDC-X692 K3 : KDC-MP638U (North America) M2 : KDC-X7009U (Other Areas)
  • Page 48 J 1/10W D190 UDZW6.2 (B) ZENER DIODE K2K3E4 R716 RK73GB2A101J CHIP R J 1/10W E3 : KDC-W7041U E4 : KDC-W7141UY (Europe) Indicates safety critical com po nents. K2 : KDC-X692 K3 : KDC-MP638U (North America) M2 : KDC-X7009U (Other Areas)
  • Page 49 DTA124EUA DIGITAL TRANSISTOR D13-2155-04 WORM DTC124EUA DIGITAL TRANSISTOR D13-2156-14 GEAR KTA1046-P TRANSISTOR D13-2157-04 GEAR E3 : KDC-W7041U E4 : KDC-W7141UY (Europe) Indicates safety critical com po nents. K2 : KDC-X692 K3 : KDC-MP638U (North America) M2 : KDC-X7009U (Other Areas)
  • Page 50 SEMS (TAPTITE SCREW) (PT 2X6) T42-1066-14 DC MOTOR (SPINDLE) T42-1067-14 DC MOTOR (LOADING/SLED) DPU1 X93-2130-01 OPTICAL PICKUP ASSY E3 : KDC-W7041U E4 : KDC-W7141UY (Europe) Indicates safety critical com po nents. K2 : KDC-X692 K3 : KDC-MP638U (North America) M2 : KDC-X7009U (Other Areas)
  • Page 51 KDC-MP638U/W7041U /W7141UY/X692/X7009U 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 52 D/A Converter ............... 24 Bit KDC-X692 ..........4000 mV/10 kΩ Spindle speed ........500 – 200 rpm (CLV) KDC-MP638U .......... 2500 mV/10 kΩ Wow & Flutter ........Below Measurable Limit Preout impedance ............≤ 600 Ω Frequency response (±1 dB) ......10 Hz – 20 kHz...
  • Page 53 KDC-MP638U/W7041U /W7141UY/X692/X7009U SPECIFICATIONS (KDC-W7041U/W7141UY) FM tuner section USB Interface Frequency range (50 kHz space) ..87.5 MHz – 108.0 MHz USB Standard ............USB1.1/ 2.0 Usable sensitivity (S/N = 26dB) ......0.7 μV/75 Ω Maximum Supply current .......... 500 mA Quieting Sensitivity (S/N = 46dB) ....... 1.6 μV/75 Ω...
  • Page 54 AAC decode ..........AAC-LC “.m4a” fi les Installation Size (W x H x D) ....182 x 53 x 155 mm Weight ................1.4 kg KENWOOD follows a policy of continuous advancements in development. For this reason specifi cations may be changed without notice.

This manual is also suitable for:

Kdc-w7041uKdc-w7141uyKdc-x692Kdc-x7009u