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Kenwood KDC-8024 Service Manual

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Download this manual See also: Instruction Manual
CD RECEIVER
KDC-8024
SERVICE MANUAL
CD mechanism operation description is not in this service
manual.
Please, refer to service manual X92-4030-0x (B51-7867-00).
Escutcheon
(B07-3078-01)
Remote controller assy
(RC-420)
(A70-2026-05)
Panel assy
(A64-2985-01)
Mounting hardware assy
(J21-9823-03)
Lever
(D10-4674-04) x 2
© 2003-2 PRINTED IN JAPAN
B53-0033-00 ( N ) 1874
CD mechanism extension cord : W05-0935-00
s
50
W
4
COMPACT
DIGITAL AUDIO
Plastic cabinet assy
(A02-2731-03)
Screw set
Antenna adaptor
(N99-1734-05)
(T90-0552-05)
Escutcheon
(B07-3078-01)
Panel assy
(A64-3002-02)
DC cord (ISO)
(E30-4942-05)

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  • Page 1 CD RECEIVER KDC-8024 SERVICE MANUAL © 2003-2 PRINTED IN JAPAN B53-0033-00 ( N ) 1874 CD mechanism operation description is not in this service CD mechanism extension cord : W05-0935-00 manual. Please, refer to service manual X92-4030-0x (B51-7867-00). Panel assy...

  • Page 2: How To The Panel Mechanism Assembly

    KDC-8024 HOW TO THE PANEL MECHANISM ASSEMBLY 1. Fixed the position of operation side (Fixed the horizontal position when the panel opened) Rotary to the q The mounting hardware (281) of operation side is rota- stop position tion (A) into the stop position with close side.

  • Page 3: Block Diagram

    KDC-8024 BLOCK DIAGRAM (X25-964) Q207,208 IC13 PRE OUT TUNER PRE MUTE OP AMP (NF) AUDIO OUT Q203,204 Q303,304 IC12 E-VOL SYSTEM PRE OUT & AM+B PRE MUTE OP AMP E'S+ (REAR) Q205,206 IC11 QUAL PRE OUT PRE MUTE OP AMP...

  • Page 4: Components Description

    KDC-8024 COMPONENTS DESCRIPTION SUB-CIRCUIT UNIT (X16-2080-10) Ref. No. Application/Function Operation/Condition/Compatibility E2PROM For security SUB-CIRCUIT UNIT (X16-2120-10) Ref. No. Application/Function Operation/Condition/Compatibility 3.3V regulator The power supply of IC and VFD (Logic) which are driven by 3.3V Buffer IC It is change into 3.3V from 5V...

  • Page 5: Microcomputer's Terminal Description

    KDC-8024 COMPONENTS DESCRIPTION Ref. No. Application/Function Operation/Condition/Compatibility Small lamp det SW When Q26’base goes Hi, Q26 is turned on. BU det When Q27’base gose Hi, Q27 is turned on. ACC det When Q29’base gose Hi, Q29 is turned on. Q30, 31 Mute driver When a base gose Lo, mute driver is turned on.
  • Page 6 Normally : L, After system reset : H (400ms Reset output to external slave µ-com LX_RST or more) and then L NC (Without WMA, MP3 model) Output : L NC (KDC-8024 only) Output : L NC (KDC-8024 only) Output : L IC2_TYPE0 Extra IC2 destination.
  • Page 7 KDC-8024 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Module Purpose / Description Truth table Processing Operation Panel µ-com control. SC_CON To panel Power OFF, ACC OFF : L M_RST Reset output to CD mechanism. Normally : H, Reset : L (Per mechanism control) M_STOP Stop request to CD mechanism.
  • Page 8 KDC-8024 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Module Purpose / Description Truth table Processing Operation Data output to panel µ-com PAN_TX To panel WOW_MODE1 Audio WOW control. PLL_CLK Tuner Clock input/output with F/E. Truth table q WOW MODE changover operation...
  • Page 9 KDC-8024 MICROCOMPUTER’S TERMINAL DESCRIPTION e FPM MOTOR Slide FPM mechanism operation FPM MOTOR B FPM MOTOR F Standby Backward operation Forward operation Brake Angle FPM mechanism operation FPM MOTOR O FPM MOTOR C Standby Angle open direction Angle close direction...
  • Page 10 KDC-8024 MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Purpose / Description Procesing Operation REGC Connect to 1µF capacitor. Main clock. 20MHz Main clock. 20MHz CLKOUT 43~47 Output : L FL+3.3V FL3.3V ON/OFF. Hi-Z : OFF, L : ON (Time constant check, 1ms) FL+B FL+B ON/OFF.

  • Page 11: Test Mode

    KDC-8024 TEST MODE How to enter the test mode Test mode specifications of the CD receiver While pressing and holding the Preset 1 and Preset 3 keys, • Forced ejection is inhibited in the reset start operation. When reset the unit.
  • Page 12 KDC-8024 TEST MODE Menu-related specifications Panel mechanism • A short press of the Q key initiates the menu mode. • Auto-panel close inhibition when set-in the CD. • Pressing the DNPP key on the remote initiates the Menu • The panel operation inhibition at power ON/OFF and ACC mode.
  • Page 13 KDC-8024 TEST MODE 2. Method of registration of the security code after 4. How to inscription the panel security code EEPROM (F/E) replacement (Code security model) 1) Enter the test mode. 2) Pressing the AM key on all lighting, check the “P-ROM WAIT”...
  • Page 14 KDC-8024 PC BOARD (COMPONENT SIDE VIEW) ELECTRIC UNIT X25-9642-72 (J74-1473-12) C100 C277 C274 C273 C272 C215 C205 C275 MUTE IC18 I G O C265 C264 R244 C299 C259 D504 Q208 IC13 Q207 C269 C268 R508 C300 R245 R503 R221 C234...
  • Page 15 KDC-8024 SUB-CIRCUIT UNIT SWITCH UNIT X16-2120-10 (J74-1478-12) X16-2170-10 (J74-1482-12) C279 C275 C278 C206 C314 L305 L307 R308 Q305 R307 C311 R305 R306 L306 C502 X16-2120-10 X16-2170-10 Address Address...
  • Page 16 KDC-8024 PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X25-9642-72 (J74-1473-12) D208 D207 R204 D206 D205 FM+B Q202 C217 C216 D501 AM+B C213 C260 R203 C261 IC17 Q304 C262 D502 D503 C263 R254 C257 C258 C255 C256 R255 PLL+B C253 Q303...
  • Page 17 KDC-8024 SUB-CIRCUIT UNIT SWITCH UNIT X16-2120-10 (J74-1478-12) X16-2170-10 (J74-1482-12) R265 C286 PANRST D204 D203 ILL+B R254 SW14V R255 R231 Q601 C701 R230 SERVO+B Q602 R242 R243 PAN5V CP14 FL+B C296 R270 VOLA VOLB IC10 OPEN C291 R272 ESDGND E2PDATA PAN-DET...
  • Page 18 KDC-8024 PC BOARD (COMPONENT SIDE VIEW) CD PLAYER UNIT X32-5200-00 (J74-1243-02/1245-02) R218 R202 R125 R121 R107 R118 R122 R108 R126 X32-5200-00 Address Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 19 KDC-8024 PC BOARD (FOIL SIDE VIEW) CD PLAYER UNIT X32-5200-00 (J74-1243-02/1245-02) FBAL GCTL TBAL VDET Vref TRCRS TOFS LDCNT D.GND EQCNT SLED-/EJECT /MUTER SPDL- /MUTEL SLED+/LOAD /MSTOP SPDL+ A.+8V A.GND LOE/LIM DRVMUTE R110 R101 R103 R102 R104 X32-5200-00 Address Address...
  • Page 20 KDC-8024 (X25-964X-XX) UNIT F G H MODEL NAME (X86-373X-XX) 0-10 0-11 KDC-X969 KDC-X869 0-11 0-11 KDC-MP922 0-12 0-11 FX-9000 0-01 0-01 KDC-PSW9524 2-71 2-70 FRONT L REAR L WHT/BLK GRN/BLK KDC-8024 2-72 2-70 KDC-9023R 0-21 YES NO 2-70 GRY/BLK VIOL/BLK...
  • Page 21 KDC-8024 (X25-964X-XX) UNIT C203- C264,265,268, D203, R48, R124- R148,149, R222,223,234, R230,231,242, MODEL NAME C501 C502 C505 R106 R107 R108 R109 R185 R526 269,297,298 (703033BGCXXX) 154,155,521 235,246,247 243,254,255 KDC-X969 0-10 22u16 100K 2.2K KDC-X869 0-11 22u16 100K 2.2K KDC-MP922 0-12 22u16 100K 2.2K...
  • Page 22 KDC-8024 AUX IN REAR FRONT NON-F REAR FRONT NON-F (E30-6209-05) : KDC-X969/X869/MP922/9023R (E30-6210-05) : KDC-PSW9524 (E30-6214-05) : FX-9000 (E30-6211-05) : KDC-8024 F1 10A FUSE ∗ R265 C286 0.01 C288 C287 C289 C110 0.01 R166 R165 4.7K 4.7K D209 D213 D210...
  • Page 23 KDC-8024 AMP for 4.5V AMP for 4.5V AMP for 4.5V PRE-OUT PRE-OUT PRE-OUT IC12 IC11 IC13 ∗ C284 2200P C285 2200P -9.1V -9.1V -9.1V C281 2200P R266 R237 R236 R224 R225 R249 R248 ∗ ∗ ∗ C280 2200P C290 C283 2200P 0.01...
  • Page 24 PGND 0.47 R202 4.7K TP115 MOTOR+ C209 R201 10K TP116 MOTOR DRIVER MOTOR DRIVER PH-OUT 0.022 C210 0.01 IC for IC for SW5V PANEL MECHA PANEL MECHA TP118 D GND TP128 TP119 TP129 TP117 TP130 X16- KDC-8024 (1/3) X25-9642-72 (5/5)
  • Page 25 KDC-8024 DISPLAY UNIT (X16-2120-10) 120X15 Pixel/ 120x8 Dot : LIGHT GREENISH TP21 2.2K 50.3V FL+B 3.3V REGULATOR TP42 9.4V 5.0V 0.01 100K ILL+B FLGND TP20 0.047 0.01 BLUE LED SW FLGND 5.0V FAC2 FAC2 TP19 3.3V FAC1 TP37 0.01 FAC1...
  • Page 26 R26 1K 20.000MHz 5.0V CP14 DAN202U WAVE IN FL 3.3V FL+B DAP202U 0.01 0.01 DA204K DA204U DTA114YUA SWITCH UNIT (X16-2080-10) KDC-8024 (2/3) GND LINE B LINE PAN-DET : TAR5S33 TC74HC4050AFT RS-171 BA3830F 703032BGFA01 2SA1163 2SC2713 DTA114EUA or 5.0V UN5111 Q4,5...
  • Page 27 B30-1605-05 D12,14,16,18,19 B30-1564-05 DAP202U or MA142WA GND LINE B30-1566-05 KDC-8024 (3/3) B LINE MA8068-M TC74HC4050AFT TDA7479D CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list). Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
  • Page 28 KDC-8024 CD PLAYER UNIT (X32-5200-00) BU5V BU5V TRCRS 2.5V 0.015 KICK TVD TRV TOFS 2.5V 1.5V CSEL 1.5V TEST1 TEST2 IOSEL 5.0V BU5V NRST BCLK 0.9Vp-p LRCK S2 : 12cm DISC SRDATA DET. SWITCH SUBC RFENV S1 : ∗ SBCK LOAD DET.
  • Page 29 KDC-8024 1000P C2 1 C1 1 C5 22P RF AMPLIFIER ADAPTED for CD-RW 5.6K PLLF 1.2V RFDET 0.022 3.9K 2.5V 1.5V 3.3V 4.0V IREF 0.1V DPU1 (X92-) 2.5V DSLF 2.5V 5.0V OPTICAL 100K PICKUP 0.9Vp-p 0.9Vp-p 0.9Vp-p 2.5V VREF IOP- 2.5V...

  • Page 30: Exploded View (Mechanism)

    KDC-8024 EXPLODED VIEW (MECHANISM) DPU1 DFPC1 (X32-) φ : N09-4460-05 M1.7x8.5 : N09-4472-05 M1.7x2.5 : N09-6004-05 φ : N09-6006-05 2x3.5 : N09-6007-05 M2x2 φ : N09-6051-05 2x6(BLK) : N19-2163-04 1.6 WASHER : N39-2020-46 M2x2 : N09-6108-05 M2x3.5 Parts with the exploded numbers larger than 700 are not supplied.

  • Page 31: Exploded View (Unit)

    KDC-8024 EXPLODED VIEW (UNIT) M2x1.9 N09-4448-05 FLAT WASHER N19-2176-04 N09-6073-05 RETAINIING RING N24-3015-60 M2x2 N09-6087-05 M2x2.5 N38-2025-46 N09-6088-05 M2.6x5(BLK) N38-2650-45 M2x3(BLK) N09-6089-05 M3x5 N67-3005-46 φ2x5 φ3x5 N09-6093-05 N83-3005-46 φ2x5(BLK) φ3x8 N09-6094-05 N83-3008-46 φ2x4 φ2x4(BLK) N09-6095-05 N86-2004-45 φ3x8 M2x3(BLK) N09-6096-05 N80-3008-46 φ3x10...

  • Page 32: Parts List

    KDC-8024 PARTS LIST New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. Parts No. Description Ref. No.
  • Page 33 KDC-8024 PARTS LIST New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. KDC-8024 Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. Parts No. Description Ref. No.
  • Page 34 KDC-8024 PARTS LIST New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. SWITCH UNIT (X16-2170-10) Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. Parts No.
  • Page 35 KDC-8024 PARTS LIST New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. ELECTRIC UNIT (X25-9642-72) Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. Parts No.
  • Page 36 KDC-8024 PARTS LIST New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. ELECTRIC UNIT (X25-9642-72) Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. Parts No.
  • Page 37 KDC-8024 PARTS LIST New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. ELECTRIC UNIT (X25-9642-72) Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. Parts No.
  • Page 38 KDC-8024 PARTS LIST New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. CD PLAYER UNIT (X32-5200-00) Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. Parts No.
  • Page 39 KDC-8024 PARTS LIST New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. CD MECHANISM ASSY (X92-4450-01) Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. Parts No.

  • Page 40: Specifications

    KENWOOD ELECTRONICS GULF FZE KENWOOD ELECTRONICS UK LIMITED P.O. Box 61318, Jebel Ali, Dubai, U.A.E. Kenwood House, Dwight Road, Watford, Herts, WD18 9EB, United Kingdom KENWOOD ELECTRONICS (THAILAND) CO., LTD. KENWOOD ELECTRONICS DEUTSCHLAND GMBH 2019 New Pechburi Road, Bangkapi, Huaykwang, Bangkok, 10320 Thailand Rembrücker-Str.

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