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Kenwood KDC-W6531 Service Manual
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CD RECEIVER
KDC-W6531/W6531Y
/X589/X7529
SERVICE MANUAL
A unique identification number (Unique ID) is given to each unit, which is imprinted on
the CD mechanism assembly. If and when the mechanism assembly or Flash ROM
(IC17) on the mechanism board is replaced, it is necessary to write the Unique ID.
For details, refer to "How to Write the Unique ID" on Page 15.
KDC-X589
KDC-X7529
KDC-W6531
KDC-W6531Y
DC cord
DC cord
(E30-6412-05)
(E30-6408-05)
Compact disc
KDC-X589/X7529:
(W01-1643-15)
KDC-W6531/W6531Y:
(W01-1647-15)
Depends on the model.
Refer to the parts list.
Plastic cabinet assy
(A02-2732-03)
Remote controller assy
(A70-2067-05)
Size AA battery
(Not suplied)
RC-527
TDF PANEL INFORMATION
MODEL
TDF PANEL No. TDF NAME
KDC-X589
Y33-2180-60
KDC-X7529
Y33-2180-65
KDC-W6531/W6531Y
Y33-2180-63
© 2005-2 PRINTED IN JAPAN
B53-0240-00 ( N ) 1708
CD MECHANISM EXTENSION
CORD (24P) : W05-0934-00
Lever
Mounting hardware assy
(D10-4589-04)
x2
(J21-9716-03)
Screw set
Antenna adaptor
KDC-X589:
(T90-0523-05)
(N99-1723-05)
KDC-X7529:
(N99-1758-05)
TDF-55DX
TDF-X7529
TDF-W6531
This product uses Lead Free solder.
Panel assy
(A64-3498-12)
Escutcheon
(B07-3125-01)
Panel assy
(A64-3503-12)
Escutcheon
(B07-3125-01)
Panel assy
(A64-3511-12)
Escutcheon
(B07-3125-01)
Screw set
KDC-X589:
(N09-6212-05)
KDC-X7529/W6531
/W6531Y:
(N09-6280-05)

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Summary of Contents for Kenwood KDC-W6531

  • Page 1 CD RECEIVER KDC-W6531/W6531Y /X589/X7529 © 2005-2 PRINTED IN JAPAN SERVICE MANUAL B53-0240-00 ( N ) 1708 A unique identification number (Unique ID) is given to each unit, which is imprinted on CD MECHANISM EXTENSION the CD mechanism assembly. If and when the mechanism assembly or Flash ROM CORD (24P) : W05-0934-00 (IC17) on the mechanism board is replaced, it is necessary to write the Unique ID.
  • Page 3 KDC-W6531/W6531Y /X589/X7529 BLOCK DIAGRAM CD PLAYER UNIT (X32-5730) POWER ON BU3.3V 26.88MHz LOS-SW SW3.3V(712) 16.898MHz 12EJE-SW 8EJE-SW LOE/LIM SW RESET MSTOP,MRESET u-COM AUDIO MUTE RF AMP INTQ INFINITY 0 DET.L/R SERVO DSP SW5V SW3.3V(712) IC18 IC13 EMPH DAC CONTROL DAC RST...
  • Page 4 KDC-W6531/W6531Y /X589/X7529 COMPONENTS DESCRIPTION CD PLAYER UNIT (X32-5730-00) Ref. No. Application / Function Operation / Condition / Compatibility µ-com for mechanism control LSI for CD signal processing +RF AMP BTL driver SP,SL (including LO/EJ) motor and PU actuator SW3.3V regulator 3.3V power supply for IC2, PU, and IC18 digital section...
  • Page 5 KDC-W6531/W6531Y /X589/X7529 COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition / Compatibility Q4,906 SW14V When Q4’base goes Hi, SW14V outputs 14V. Q5,6 AUDIO8V AVR When Q6’base goes Hi, A8V AVR outputs 8.3V. Q7,8 MOTOR+B AVR When Q8’base goes Hi, M+B AVR outputs 8.3V.
  • Page 6 KDC-W6531/W6531Y /X589/X7529 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Application Processing Operation Description Not used. Open output L-fixed S_DATA (Decoder) Data output for serial data B_DATA (Decoder) Data input for serial data (Decoder) Clock output for serial data DSPTXD1 (DSP) Data output for serial data...
  • Page 7 KDC-W6531/W6531Y /X589/X7529 MICROCOMPUTER’S TERMINAL DESCRIPTION MAIN MICROCOMPUTER 30624MWPA35GP (X34 : IC1) Module Truth Pin No. Pin Name Application Processing Operation Description (functional) Value Table REMO EXTRA Remote controller signal input Pulse width is detected. LX_MUTE LX_M Mute request from slave unit...
  • Page 8 KDC-W6531/W6531Y /X589/X7529 MICROCOMPUTER’S TERMINAL DESCRIPTION Module Truth Pin No. Pin Name Application Processing Operation Description (functional) Value Table ROM correction E2PROM I2C clock SCL/ROMCOR_SCL EXTRA output terminal POWER ON : Hi-Z, POWER OFF : L, PON_PANEL Power supply I/O Panel 5V control terminal...
  • Page 9 KDC-W6531/W6531Y /X589/X7529 MICROCOMPUTER’S TERMINAL DESCRIPTION Module Truth Pin No. Pin Name Application Processing Operation Description (functional) Value Table OEM_DISP_CE EXTRA I/O External display control request External display O Not used. (M-destination only) Output L-fixed EXTRA O Not used. Output L-fixed...
  • Page 10 KDC-W6531/W6531Y /X589/X7529 MICROCOMPUTER’S TERMINAL DESCRIPTION PANEL General Purpose Port Functional Allocation Pin No. Active (H/L) Pin Name Application Processing Operation Description RED : H RED LED control terminal GREEN : L RED : L GREEN GREEN LED control terminal GREEN : H...
  • Page 11 KDC-W6531/W6531Y /X589/X7529 TEST MODE How to enter the test mode • AUTO : FM1_98.1A In order to enter the test mode, reset the unit while simulta- • Forced WIDE : FM1_98.1W neously pressing down [1] and [3] keys. • Forced MIDDLE : FM1_98.1M •...
  • Page 12 KDC-W6531/W6531Y /X589/X7529 TEST MODE 2-ZONE Items ter this, any of the item can be selected) * Normally, Sub Woofer Level is not included. In this ver- • When using sources other than the STANDBY source, us- sion, however, the Sub Woofer Level is included, and this ing a short-press on [AUTO] / [TI] key, 2-ZONE ON / OFF is has been already arranged.
  • Page 13 KDC-W6531/W6531Y /X589/X7529 TEST MODE Other [5] Key Short-press : CD EJECT number of times is displayed. • At Power ON, “CODE_OFF”, “CODE_ON” displays will not During CD EJECT number of times display, be made. by long-pressing for 2 seconds, CD EJECT •...
  • Page 14 KDC-W6531/W6531Y /X589/X7529 TEST MODE Security gardless of whether a disc is in the unit or not. • Forced Power ON mode (All models) Panel full OPEN/CLOSE is conducted with a short-push. (Protection time : 3 seconds) Even in the case where security is in effect, by simultaneously...
  • Page 15 KDC-W6531/W6531Y /X589/X7529 HOW TO WRITE THE UNIQUE ID 1. Introduction The Unique ID is an identification code allocated to each DXM- 6800 mechanism unit. When written to the mechanism unit, the ID is stored in the Flash memory area, managed by the 63pin DSP.
  • Page 16 KDC-W6531/W6531Y /X589/X7529 HOW TO WRITE THE UNIQUE ID The Unique ID indicated in the [minutes] section is the target Procedure 8. Reset the mechanism microcomputer, and start Unique ID of the current procedure for writing the ID. The it up.
  • Page 17 KDC-W6531/W6531Y /X589/X7529 HOW TO WRITE THE UNIQUE ID 4. Note : T-34 8:05 T-34 9:05 • When in the Unique ID Write mode, the written Unique ID is not displayed. The terminal of the mechanism microcom- Track Up key puter must be put back to what it was before (63pin to Low).
  • Page 18 KDC-W6531/W6531Y /X589/X7529 PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT X34-342x-xx/3762-70 (J76-0049-12) 13 11 12 8 4 3 9 10 6 D501 C529 R503 C501 R507 D107 C510 R933 C511 C512 L301 C502 R938 Q906 C959 IC902 C958 D904 W127 C428...
  • Page 19 KDC-W6531/W6531Y /X589/X7529 D101 R105 R126 C105 C108 R112 R108 D111 R128 C104 Q102 R109 R111 D103 Q112 C501 D110 D108 D107 C106 C102 EB EB R123 Q104 R114 R125 R117 Q105 R124 C107 R113 C103 Q111 R122 R938 R118 R116...
  • Page 20 KDC-W6531/W6531Y /X589/X7529 PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-342x-xx/3762-70 (J76-0049-12) R950 R104 R107 R952 R951 R945 R948 R947 R937 R927 R935 C957 R924 D903 R921 R427 R920 R432 R431 W104 R261 R129 R203 R259 R932 D516 R520 C209 C203...
  • Page 21 KDC-W6531/W6531Y /X589/X7529 D408 C429 R425 R948 C427 C426 D405 R946 Q300 R944 Q301 W123 X34-342x-xx/3762-70 Ref. No. Address C438 R401 R434 D412 Q101 Q103 Q114 R335 Q300 Q301 D305 R314 C326 Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 22 KDC-W6531/W6531Y /X589/X7529 PC BOARD (COMPONENT SIDE VIEW) CD PLAYER UNIT X32-5730-00 (J76-0060-12) R121 R116 R115 R118 R113 R120 CP16 R114 IC13 IC18 R111 R117 R108 R109 R112 R110 R128 CP14 R153 IC17 CP17 R59 R60 X32-5730-00 Ref. No. Address Ref. No.
  • Page 23 KDC-W6531/W6531Y /X589/X7529 PC BOARD (FOIL SIDE VIEW) CD PLAYER UNIT X32-5730-00 (J76-0060-12) R150 CP10 R123 LRCK BCLK DATA R135 TRK+ IC14 TRK- FLAG FCS- R142 R138 FCS+ HOLD LOCK MIRR C102 IC15 12EJE R129 D-OUT LOSSW A.GND DATA /CLK SLD-...
  • Page 24 KDC-W6531/W6531Y /X589/X7529 PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT SWITCH UNIT X16-2920-1x/3142-70 X16-2920-1x/3142-70 (J76-0050-12) (J76-0050-12) X16-2920-1x/3142-70 X16-2920-1x/3142-70 Ref. No. Address Ref. No. Address PAN5 REMO ROT-A ROT-B Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 25 KDC-W6531/W6531Y /X589/X7529 (X34-342x-xx/376x-xx) ∗ ∗ TP87 R423 C427 0.47 AU-L BU5V ∗ TP88 R422 C428 ∗ MUTE DRIVER 47u6.3 AU-G TP89 R424 C426 Q116 Q115 0.47 AU-R D405 D406 ∗ R519 TP27 W104 C513 R403 C417 ∗ 0.01 R419 180...
  • Page 26 KDC-W6531/W6531Y /X589/X7529 4V PRE+BSHORT PROTECTION BU5V,BU,8V ∗ Q15,16 4V PRE+B Q108 4V PRE+B SHORT PROTECTION TP27 W104 SMALL DET SW R505 R120 470K R119 5.6V IC11 C501 Q111 5.6V 4V PRE R946 D502 Q110 TP129 R123 SURGE DET R948 R949 R950 5.6V...
  • Page 27 KDC-W6531/W6531Y /X589/X7529 30624MWPA35GP Q4,6 UMC2N E-TDA7415 Q9,16 2SB1443 M5237ML-CF0J Q11,17,301 DTC124EUA E-TDA7560A 2SA1577 FUSE 10A BAOOCCWT-V5 Q101,103 2SB1188(Q,R) Q112 R127 SN74HCO2APWR Q102,106,304 DTC114YUA D111 S-80836CNNB-J Q105 DTA114EUA LB1930M-E Q107 DTA123JK TP17 TP16 E-TDA7479AD Q108 DTC144EUA IC10 BR24L04FV-W Q113 2SA1774 IC11...
  • Page 28 KDC-W6531/W6531Y /X589/X7529 ANODE CONNECTION 3GA,3GB 1GA,1GB col2 (X16-292x-xx/3142-70) TP30 col2 (1G~3G) col1 col4 col3 (1G) (X16-292x-xx) DESTI- UNIT MODEL NAME R30,31 NATION KDC-X589 0-10 KDC-MP5028 0-11 KDC-MP528 0-11 TP13 KDC-W6531Y 0-11 KDC-W6031Y 0-11 RESET KDC-X7529 0-10 TP12 RST 14 R6 470...
  • Page 29 KDC-W6531/W6531Y /X589/X7529 (X32-5730-0x) 12EJE-SW SW3.3V TP74 D OUT BU3.3V AVR D.OUT BU3.3V BU3.3V TP73 12EJE-SW 12EJE-SW IC19 5.0V SW3.3V AVR 3.3V TP72 LOS-SW LOS-SW VOUT LOS-SW ON/OFF CP2 100 TP71 3.3V TP70 DATA DATA TP93 TP98 TP96 TP94 C102 R144 TP69 3.3V...
  • Page 30 KDC-W6531/W6531Y /X589/X7529 SW3.3V TP29 26.880MHz RESET TP39 VREF ADCIN C28 10 R35 100K 3.3V 270K TP100 IOP1 IOP2 RXD1 TP26 1.7V 3.3V 1.3Vp-p 3.3V 3.3Vp-p DSPSCLK1 1.7V DSPRXD1 1.7V 4.7K 0.16Vp-p 2.5V DSPTXD1 0.16Vp-p 3.3V TXD1 TP27 R20 1K 1.3Vp-p 0.21Vp-p...
  • Page 31 KDC-W6531/W6531Y /X589/X7529 2SB1565 DTA123JK 2SB1188 TP75 DTA144EUA TP76 DTC114YUA DTC143TUA TP77 1.7Vp-p 2SA1576A TP78 TP79 TP80 0.16Vp-p TP81 1.3Vp-p 2SC2873-F 2SB1443 2SA1774 C100 2P (X2)RF2- 2SC4081 1.7V C48 4P (X1)RF- TP82 R69 6.8K 0.8Vp-p FCS+ (X2)EQ1 FCS+ R51 3.9K TP83...
  • Page 32 KDC-W6531/W6531Y /X589/X7529 EXPLODED VIEW (CD MECHANISM) DPU1 DFPC1 (X32) φ : N09-4460-05 : N09-4472-15 M1.7x8.5 M1.7x2.5 : N09-6004-05 M2x2 : N09-6007-05 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 33 KDC-W6531/W6531Y /X589/X7529 EXPLODED VIEW (UNIT) DME1 (X34) SIZE AA BATTERY (Not supplied) M2x2 : N09-6269-05 M2x2.5 : N09-6326-05 φ2.6x6 M1.7x2 : N09-6140-05 : N78-2660-48 φ2x6 M2x2 : N09-6141-05 : N80-2006-48 φ2x8 M2x2.5 : N09-6142-05 : N80-2008-43 φ1.7x4.5 φ3x5 : N09-6190-05 : N83-3005-48 φ3.05x5.83...
  • Page 34 E TYPE RETAINING RING N09-6286-05 STEPPED SCREW (M2X1.8) E39-0736-05 FLAT CABLE 24PIN 1MM N09-6326-05 MACHINE SCREW (M2X2.5) F29-0626-04 INSULATING COVER N78-2660-48 PAN HEAD TAPTITE SCREW Indicates safety critical components. E : KDC-W6531 E1 : KDC-W6531Y K : KDC-X589 M1 : KDC-X7529...
  • Page 35 J 1/10W KM1 CK73GB1H472K CHIP C 4700PF R32,33 RK73GB2A471J CHIP R J 1/10W C59,60 CK73GB1H152K CHIP C 1500PF W1,2 R92-2053-05 CHIP R 0 OHM J 1/8W E : KDC-W6531 E1 : KDC-W6531Y K : KDC-X589 M1 : KDC-X7529 Indicates safety critical components.
  • Page 36 RK73GB2A472J CHIP R 4.7K J 1/10W R139-141 RK73GH2A111D CHIP R D 1/10W RK73GB2A102J CHIP R 1.0K J 1/10W R142 RK73GB2A6R8J CHIP R J 1/10W E : KDC-W6531 E1 : KDC-W6531Y K : KDC-X589 M1 : KDC-X7529 Indicates safety critical components.
  • Page 37 16WV CD04AS1HR47M ELECTRO 0.47UF 50WV C507 CK73FB1C105K CHIP C 1.0UF C510,511 CD04AS1HR47M ELECTRO 0.47UF 50WV CD04BK1E101M ELECTRO 100UF 25WV C512 CD04AS0J470M ELECTRO 47UF 6.3WV E : KDC-W6531 E1 : KDC-W6531Y K : KDC-X589 M1 : KDC-X7529 Indicates safety critical components.
  • Page 38 J 1/10W RK73GB2A473J CHIP R J 1/10W R232 RK73GB2A473J CHIP R J 1/10W RK73GB2A103J CHIP R J 1/10W R233 RK73GB2A471J CHIP R J 1/10W E : KDC-W6531 E1 : KDC-W6531Y K : KDC-X589 M1 : KDC-X7529 Indicates safety critical components.
  • Page 39 J 1/10W KM1 W112,113 R92-1252-05 CHIP R 0 OHM J 1/16W R412,413 RK73GB2A223J CHIP R J 1/10W KM1 W114,115 R92-2053-05 CHIP R 0 OHM J 1/8W E : KDC-W6531 E1 : KDC-W6531Y K : KDC-X589 M1 : KDC-X7529 Indicates safety critical components.
  • Page 40 DA204K DIODE 2SC4155A (Q,R,S) TRANSISTOR DTC124EUA DIGITAL TRANSISTOR D408,409 DA204K DIODE KRC403-P DIGITAL TRANSISTOR D411,412 DAP202U DIODE RT1N241M TRANSISTOR D411,412 KDS120-P DIODE 2SC4081 TRANSISTOR E : KDC-W6531 E1 : KDC-W6531Y K : KDC-X589 M1 : KDC-X7529 Indicates safety critical components.
  • Page 41 J21-9677-22 MOUNTING HARDWARE Q400-403 RT1N430M TRANSISTOR J21-9678-13 MOUNTING HARDWARE Q400-405 DTC143TUA DIGITAL TRANSISTOR J90-1001-11 GUIDE Q400-405 KRC410-P DIGITAL TRANSISTOR J90-1023-03 GUIDE Q400-405 RT1N430M TRANSISTOR E : KDC-W6531 E1 : KDC-W6531Y K : KDC-X589 M1 : KDC-X7529 Indicates safety critical components.
  • Page 42 PAN HEAD MACHINE SCREW N09-6108-05 MACHINE SCREW (M2X3.5TYPE3) 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 E : KDC-W6531 E1 : KDC-W6531Y K : KDC-X589 M1 : KDC-X7529 Indicates safety critical components.
  • Page 43 KDC-W6531/W6531Y /X589/X7529 SPECIFICATIONS KDC-W6531 / W6531Y KDC-X589 FM tuner section FM tuner section Frequency range (50kHz space) ..87.5MHz~108.0MHz Frequency range (200kHz space) ..87.9MHz~107.9MHz Usable sensitivity (S/N=26dB) ......0.7µV/75Ω Usable sensitivity (S/N=30dB) ....9.3dBf (0.8µV/75Ω) Quieting Sensitivity (S/N=46dB) ......1.6µV/75Ω...
  • Page 44 10 kHz space ......... 530kHz~1700kHz Usable sensitivity (S/N=20dB) ....... 28dBµ (25µV) CD player section Laser diode .............. GaAlAs KENWOOD follows a policy of continuous advancements in Digital filter (D/A) ......8Times Over Sampling development. D/A Converter ..............1Bit For this reason specifications may be changed without notice.

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