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Kenwood KDC-MP925 Service Manual

Cd receiver
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See also: Instruction Manual
CD RECEIVER
KDC-MP925
KDC-W8027
SERVICE MANUAL
* DC cord
(E30-6295-05)
*Remote controller assy
(A70-2026-05) : RC-420
Lever
(D10-4674-04) x 2
* Depends on model. Refer to the parts list.
Panel assy
KDC-MP925 (A64-3226-01)
Panel assy
KDC-W8027 (A64-3232-01)
* DC cord
Escutcheon
(E30-4942-05)
(B07-3078-01)
*Remote controller assy
(A70-2040-05) : RC-505
*Size AA Battery
(Not Supplied)
© 2004-02 PRINTED IN JAPAN
B53-0131-00 ( N ) 2439
CD mechanism extension cord (24PIN) : W05-0935-00
Mounting hardware assy
(J21-9823-03)
*Screw set
Screw
(N99-1723-05)
(N99-1734-05)
TDF PANEL INFORMATION
MODEL
PARTS NO.
KDC-MP925
Y33-1790-61
KDC-W8027
Panel assy
(A64-3248-02)
Panel assy
(A64-3252-02)
* Antenna adaptor
(T90-0552-05)
Plastic cabinet assy
(A02-2731-13)
PANEL NAME
TDF-M7000
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Summary of Contents for Kenwood KDC-MP925

  • Page 1 (D10-4674-04) x 2 * Depends on model. Refer to the parts list. © 2004-02 PRINTED IN JAPAN B53-0131-00 ( N ) 2439 CD mechanism extension cord (24PIN) : W05-0935-00 Panel assy KDC-MP925 (A64-3226-01) Panel assy KDC-W8027 (A64-3232-01) Escutcheon Mounting hardware assy (B07-3078-01)

  • Page 2: Block Diagram

    KDC-MP925/W8027 (X34- ) TUNER AUDIO OUT Q303,304 AM+B BUFFER S-METER SW5V IC14 DECODER BU5V EEPROM SERVO CD4.7V SW5V BACK UP BU5V Q501 EEP5V BU5V EEPROM TDF UNIT (X16-208) DISPLAY UNIT (X16-253) LEVEL LEVEL SHIFT SHIFT IC11 u-COM REMO SWITCH UNIT...

  • Page 3: Components Description

    CD PLAYER UNIT (X32-5540-00) Ref No. Application / Functions Mechanism control microprocessor Decoder IC BTL driver Selector IC KDC-MP925/W8027 Operation / Condition / Compatibility E2PROM for security Operation / Condition / Compatibility Panel control microprocessor Graphic ROM For 3.3V power supply For 2.5V power supply...
  • Page 4 KDC-MP925/W8027 Ref No. Application / Functions Q1,4 Level shift FET Q3,5 Level shift TR Level shift TR Level shift TR Q9,10 Switching TR ELECTRIC UNIT (X34-3030-10, X34-3032-71) Ref No. Application / Functions System control IC E-VOL & tuner IC Power supply IC...

  • Page 5: Microcomputer's Terminal Description

    Power control terminal (POWER ON : H, POWER OFF, ALL OFF : Hi-Z) WOW MODE2 WOW control terminal KDC-MP925/W8027 Operation / Condition / Compatibility When Q27 base level goes H, Q27 turned ON When Q29 base level goes H, Q29 turned ON...
  • Page 6 KDC-MP925/W8027 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name TEST DIAG MUTE PRE MUTER PRE MUTEL BU DET ACC DET FOCUS EXT AMP CONT DIMMER ANT CONT(TYPE2) I/O P ON ILL ON RESET 32,33 XT1/XT2 REGC 35,36 X2/X1 CLKOUT LX REQ M...
  • Page 7 LX CLK Clock input/ output with external slave unit PAN RX Data input from panel microprocessor PAN TX Data output to panel microprocessor WOW MODE1 WOW control terminal PLL CLK Clock input/ output to Tuner front-end KDC-MP925/W8027 Description / Processing Operation...
  • Page 8 KDC-MP925/W8027 MICROCOMPUTER’S TERMINAL DESCRIPTION Fig.1 WOW mode operation MODE WOW MODE1 WOW MODE2 WOW MODE3 BYPASS TuBass 3D-STEREO FOCUS LOW FOCUS HI WOW LOW WOW HI Fig.2 FPM motor control SLIDE FPM MOTOR B FPM MOTOR F PANEL MICROPROCESSOR : 703132GJ011-A (X16-253 : IC1) Pin No.
  • Page 9 Spectrum analyzer input terminal (BPF 330Hz) Spectrum analyzer input terminal (BPF 150Hz) Spectrum analyzer input terminal (BPF 63Hz) 2.5V VDD AVR 2.5V VREF CON VREF control terminal (Connect to VREF terminal) FLGCP3 FL bright control terminal KDC-MP925/W8027 Description / Processing Operation...
  • Page 10 KDC-MP925/W8027 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name FL LATCH 88,89 REMO ON FL3.3V SW FL+B SW 3.3V SW WE/WR 3.3V VDD EVSS CE ROM CE F/ROM FLASHROM CHECK 103,104 GREEN LED RED LED DISP LED BLACK DISP 109,110 SA RST 3.3V VDD...

  • Page 11: Test Mode

    • AUTO : FMA • Forced Wide : FMW • Forced Middle : FMM • Forced Narrow : FMN KDC-MP925/W8027 TEST MODE Test mode specifications of the CD receiver • Forced ejection is inhibited in the reset start operation. When the unit is reset while a CD is loaded in it, resetting does not recognize the CD.
  • Page 12 KDC-MP925/W8027 Menu-related specifications • A short press of the Q key initiates the menu mode. • Pressing the DNPP key on the remote initiates the Menu mode. • Continuous holding of a remote control key is inhibited, and workings are short press of any keys.
  • Page 13 Note 1 : All Clear is not applicable to the security code of this model. Note 2 : When the F/E changed, need re-inscription be- cause the panel security is clear. KDC-MP925/W8027 TEST MODE 3. How to inscription the panel security code 1. Enter the test mode.

  • Page 14: Pc Board (Component Side View)

    KDC-MP925/W8027 PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT X34-3030-10, X34-3032-71 (J74-1473-32) C205 I G O C700 C100 IC18 C265 C264 R244 C299 Q208 IC13 Q207 C269 C268 C300 R245 R221 C267 Q203 R609 IC11 C266 R220 R232 C270 Q206 C241...
  • Page 15 Q204 IC18 IC20 Q205 Q206 Q207 Q208 Q305 Refer to the schematic diagram for the values of resistors and capacitors. DISPLAY UNIT X16-2530-11 (J74-1587-02) X16-2530-11 Ref. No. Address KDC-MP925/W8027 SWITCH UNIT X16-2560-10 (J74-1590-02) X16-2560-10 Ref. No. Address Ref. No. Address...
  • Page 16 KDC-MP925/W8027 PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-3030-10, X34-3032-71 (J74-1473-32) D208 D207 FM+B D501 AM+B Q304 PLL+B Q303 R266 FPM1+ FPM1- C290 C312 IC14 X34-303x-xx Ref. No. Address SUB CIRCUIT UNIT X16-2080-10 (J74-1476-02) 8 CP1 X16-2080-10 Ref. No. Address...
  • Page 17 CP20 CP24 CP14 CP22 CP18 CP13 CP15 CP16 CP12 TEST GREEN DGND E2PCLK SYSRX SYSTX SCREQ SCCON MCREQ PANRST ILL+B FL+B FLGND VOLA PANDET ESDGND Address CP32 IC10 R206 R200 KDC-MP925/W8027 SWITCH UNIT X16-2560-10 (J74-1590-02) R203 CP300 REMO FAC1 FAC2...
  • Page 18 KDC-MP925/W8027 PC BOARD (COMPONENT SIDE VIEW) CD PLAYER UNIT X32-5540-00 (J74-1552-12) CP13 CP15 X32-5540-00 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors. RFOK CP12 MIACK...
  • Page 19 Refer to the schematic diagram for the values of resistors and capacitors. C22 C23 DAVdd3.3V 12EJE A.+8V A.GND SPDL- /MUTEL /MRST /MSTOP /MICK /RESET /STB BU3.3V SEARCH /RST LIM-SW T3 T4 FLAGIN SPDL /MSTOP KDC-MP925/W8027 Vref FLAG HOLD MIRR LOCK SDIO BCKIA LRCKIA BU2.5V STBY D.GND CP16 TXD1 RXD1...
  • Page 20 REAR L WHT/BLK GRN/BLK GRY/BLK VIOL/BLK FRONT R REAR R VIOL ANT CONT BLU/WHT P. CON TEL MUTE ORG/WHT DC CORD (E30-6295-05) : KDC-MP925 WHT/BLK GRN/BLK GRY/BLK VIOL/BLK VIOL PNK/BLK EXT. ANT CONT CONT. BLU/WHT P. CONT LINE MUTE ORG/WHT...
  • Page 21 (X34-303x-xx) UNIT C264,265, C297, MODEL NAME C501 C502 C505 268,269 KDC-MP925 0-10 C94-0040 22u16 KDC-X879 0-11 C94-0040 22u16 FX-9100 0-01 C94-0039 10u16 KDC-W8027 2-71 C94-0039 10u16 EX AMP CONTROL BUFFER Q30,31 MUTE DRIVER 0.01 3.3K 1/2W 1000P 0.01 SMALL LAMP 8.2K...
  • Page 22 KDC-MP925/W8027 C110 0.01 R166 R165 4.7K 4.7K R162 PLL-CLK WOW-MODE1 R160 470 PAN-TX R159 470 PAN-RX R161 100K L102 LX CLK LX DATA M LX DATA S R156 100K R155 100K R-DATA R154 100K TP702 R-QUAL R153 2.2K CD-SW2 R152 2.2K...
  • Page 23 4.2V R273 C236 0.33 4.2V C235 0.01 4.2V SFIL2 NC13 BUFFER for S.A R278 D217 Q210 for SA Q501 E2P 5V TP32 KDC-MP925/W8027 AMP for 4.5V PRE-OUT IC13 -9.1V R225 R249 R248 R223 R247 R246 Q203 Q207 Q208 PRE-OUT PRE-OUT...
  • Page 24 5.0V D GND DECODER IC MOTOR+ MOTOR- MOTOR- 0V or NC10 TP114 MOTOR- 7.0V OUT1 MOTOR- 0V or MOTOR- 7.0V OUT2 MOTOR+ MOTOR+ MOTOR+ PGND TP115 MOTOR+ TP116 PH-OUT SW5V TP118 D GND TP128 TP119 TP129 TP117 TP130 KDC-MP925/W8027 (1/3)
  • Page 25 SC REQ MC REQ SC CON FL BLK 2.5V 2.5VVDD CP26 3.3V TRST CP28 3.3K ROTARY CCW ROTARY CW CP27 3.3K KDC-MP925/W8027 REMO. ON SW 3.3V 5.0V 3.3V LEVEL SHIFT 3.3V 3.3V NC16 3.3V NC13 3.3V 2.5V AVR 4.9V ON/OFF 3.3V...
  • Page 26 KDC-MP925/W8027 3.3V 5.0V LEVEL SHIFT 5.0V 5.0V 3.3V 3.3V REMOTE CONTROL SENSOR 5.0V 3.3V 3.3V L MICRO PROCESSOR 3.3V 3.3V 3.3V 5.000MHz X16-2530-11 (2/3) BLACK DISP DISP LED 3.3V CP10 RED LED GREEN LED TP44 FLASHROM CHECK CE F/ROM 3.3V CE RON 3.3V...
  • Page 27 • DC voltages are as measured with a high impedance voltme- ter. Values may vary slightly due to variations between indi- vidual instruments or/and units. KDC-MP925/W8027 (2/3) KDC-MP925/W8027 : GREEN : BLUE : 703132GJ011-A (X16-2530-xx) : MX23L3213TG114...
  • Page 28 D11-15, : DTA114YUA R1,2 R3,4 R6-10 17-22 Q2-4 : 2SD2114K D24 : B30-1566-05 BLUE D25 : DAN222 BLUE DAN202U DAP202U DA204K DA204U DTA114YUA MA142WA UN5212 RD6.8M TC74HC02AF SHIFT BA3830F TC7SH08FU M5237ML LB1930M KDC-MP925/W8027 (3/3) GND LINE B LINE TC74HC4050AFT TDA7479D...
  • Page 29 VREFL 3.3V BU3.3V AVR 5.0V 3.3V VOUT 5.0V Q3,5 LEVEL SHIFT (3.3V 5.0V) LOE/LIM SW 100K 15 14 to MAIN UNIT KDC-MP925/W8027 5.0V) IOP1 IOP2 R34 4.7K C28 10 R35 100K 3.8/0V 1000P 3.3V RFOK 3.3V 100K 100K 16.898MHz 3.3V 3.3V...
  • Page 30 KDC-MP925/W8027 Q9,10 Vref 270K 6800P 1.65V 3.3V 3.3/0V RF AMP/SERVO CD SIGNAL 0/3.3V PROCESSOR 3.3/0V 3.3/0V 0/3.3V 3.3/0V 3.3V FLAG SELECTOR (SERIAL DATA) 3.3V 0/3.3V 100K CP12 100K 100K 100K 1000P LRCKIB VDD1 3.3/0V 3.3/0V 0/3.3V STANBY (DA) 3.3V VSS1 (MP3) 0/3.3V...

  • Page 31: Exploded View (Mechanism)

    : N39-2020-46 M2x2 : N09-6196-05 2x3.5 Parts with the exploded numbers larger than 700 are not supplied. DFPC1 (X32) * CD MECHANISM OPERATION DESCRIPTION is not in this sevice manual. Please refer to service manual for X92-4450-0x (B51-7889-00). KDC-MP925/W8027 DPU1...

  • Page 32: Exploded View (Unit)

    KDC-MP925/W8027 SIZE AA BATTERY (Not Supplied) (X16-256) PME1 (X16-208) EXPLODED VIEW (UNIT) M2x1.9 M2x2 M2x3(BLK) 2x5(BLK) M2x3(BLK) M2x2 2x5(BLK) FLAT WASHER (X16-253) FPC1 FPC3 (X16-221) Depends on the model. Refer to the parts list. Parts with the exploded numbers larger than 700 are not supplied.

  • Page 33: Parts List

    E30-6216-05 CORD WITH DIN CONNECTOR (CH) K1 E30-6217-05 CORD WITH DIN CONNECTOR (&REM) E1 E41-0351-05 FLAT CABLE CONNECTOR E30-6295-05 DC CORD E30-4942-05 DC CORD K1 : KDC-MP925 E1 : KDC-W8027 PARTS LIST Desti- Description Ref. No. nation FPC1 FPC2 KDC-MP925/W8027 Parts No.
  • Page 34 C8-10 CK73GB1H104K CHIP C CK73GB1H103K CHIP C C12-18 CK73GB1C104K CHIP C C12-18 CK73GB1H104K CHIP C C19,20 CK73GB1H103K CHIP C K1 : KDC-MP925 E1 : KDC-W8027 PARTS LIST Desti- Description Ref. No. nation C21,22 C21,22 C29,30 C32-34 C200 1.0K J 1/10W...
  • Page 35 ANALOGUE IC TC7WH32FU-F MOS-IC IC10 BA3830F ANALOGUE IC 2SB1188(Q,R) TRANSISTOR 2SB1132 TRANSISTOR 2SC2713 TRANSISTOR 2SA1163 TRANSISTOR K1 : KDC-MP925 E1 : KDC-W8027 PARTS LIST Desti- Description Ref. No. nation J 1/10W Q5,6 J 1/10W J 1/10W 1.0K J 1/10W J 1/10W...
  • Page 36 RK74GA1J104J CHIP-COM 100K CP16 RK74GB1J222J CHIP-COM 2.2K RK73GB2A100J CHIP R R92-3494-05 CHIP R R3,4 RK73FB2B331J CHIP R RK73GB2A101J CHIP R K1 : KDC-MP925 E1 : KDC-W8027 PARTS LIST Desti- Description Ref. No. nation 1500PF 47PF 0.10UF 56PF 0.10UF 1000PF R11,12 6800PF 0.10UF...
  • Page 37 CHIP C CK73GB1H223K CHIP C CK73FB1C105K CHIP C C44,45 CK73GB1H103K CHIP C CK73GB1H102K CHIP C CK73FB1C105K CHIP C CK73GB1H103K CHIP C K1 : KDC-MP925 E1 : KDC-W8027 PARTS LIST Desti- Description Ref. No. nation C100 C100 C101 C102 C103 C104 C106...
  • Page 38 L101 L40-4795-68 SMALL FIXED INDUCTOR (4.7UH) L102 L92-0075-05 CHIP FERRITE L201 L40-4795-34 SMALL FIXED INDUCTOR L201 L40-4795-68 SMALL FIXED INDUCTOR (4.7UH) K1 : KDC-MP925 E1 : KDC-W8027 PARTS LIST Desti- Description Ref. No. nation 10UF 16WV L303-307 22UF 16WV L303-307...
  • Page 39 CHIP R R202-204 RK73GB2A472J CHIP R R205 RK73GB2A134J CHIP R R206 RK73GB2A823J CHIP R R207 RK73GB2A473J CHIP R K1 : KDC-MP925 E1 : KDC-W8027 PARTS LIST Desti- Description Ref. No. nation J 1/10W R208 J 1/10W R209 100K J 1/10W...
  • Page 40 ZENER DIODE D206 RD6.8MW ZENER DIODE D207,208 DAP202U DIODE D207,208 LM1MA142WA-G DIODE D207,208 MA142WA DIODE D209-216 DIODE K1 : KDC-MP925 E1 : KDC-W8027 PARTS LIST Desti- Description Ref. No. nation 1.0K J 1/4W D209-216 J 1/10W D217 3.9K J 1/10W D301 4.7K...
  • Page 41 GEAR D13-2181-04 GEAR D13-2182-04 GEAR D13-2175-04 WORM D13-2176-04 GEAR D13-2177-04 GEAR D13-2178-04 GEAR D13-2183-04 GEAR K1 : KDC-MP925 E1 : KDC-W8027 PARTS LIST Desti- Description Ref. No. nation DFPC1 DPU1 KDC-MP925/W8027 ELECTRIC UNIT (X34-3030-10, X34-3032-71) Parts No. Description D13-2184-04 GEAR...

  • Page 42: Specifications

    Alameda Ministro Rocha Azevedo No. 456, Edificio Jaú, 10o Andar, Cerqueira César, Cep 0140-001, São Paulo-SP-Brasil KENWOOD ELECTRONICS UK LIMITED Kenwood House, Dwight Road, Watford, Herts, WD18 9EB, United Kingdom KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembrücker-Str. 15, 63150 Heusenstamm, Germany KENWOOD ELECTRONICS FRANCE S.A.

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