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Kenwood KDC-232MR Service Manual
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Kenwood KDC-232MR Service Manual

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Download this manual See also: Training Manual, Instruction Manual
CD RECEIVER
KDC-232MR
SERVICE MANUAL
Panel assy
(A64-3804-02)
VOL
AUD
SET UP
AUTO
AME
Mounting hardware assy
(J21-9716-03)
DC cord
(E30-6415-15)
SPARE TDF PANEL
Q
MENU
SCAN
RDM
Escutcheon
Lever
(B07-3123-01)
(D10-4589-04) x2
© 2005-11 PRINTED IN JAPAN
B53-0344-00 ( N ) 600
MAIN UNIT NAME
TDF PARTS No.
KDC-232MR
Y33-2410-62
KDC-232MR
/C.S.
REP
M.RDM
Carrying case
(W01-1661-05)
Screw set
(N99-1757-05)
This product uses Lead Free solder.
TDF NAME
TDF-62DMR
SCRL
FM
AM
FF
Screw (4x16)
(N84-4016-48)

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  • Page 1 CD RECEIVER KDC-232MR SERVICE MANUAL © 2005-11 PRINTED IN JAPAN B53-0344-00 ( N ) 600 SPARE TDF PANEL MAIN UNIT NAME TDF PARTS No. TDF NAME KDC-232MR Y33-2410-62 TDF-62DMR Panel assy (A64-3804-02) SCRL KDC-232MR /C.S. SET UP AUTO MENU SCAN M.RDM...

  • Page 2: Block Diagram

    KDC-232MR BLOCK DIAGRAM L506 ELECTRIC UNIT (X34-) FM AGC AM+B Q501 Q351,352 AM AGC PRE OUT MUTE PRE OUT IC10 FM (J/K Type) : 1800mV DME1 FM (E Type) 1372mV AM (J/K Type) 600mV MPX OUT SERVO AM (E Type)

  • Page 3: Components Description

    KDC-232MR COMPONENTS DESCRIPTION ELECTRIC UNIT (X34-4160-12) Ref. No. Application / Function Operation / Condition / Compatibility System µ-COM System controller. Power Supply IC DC5Vx2, 7.9Vx1, 8.1Vx1, 10.2Vx1, P-CON, P-ANT output. Power IC Signal amplifier. Mute logic IC Controls for mute action.

  • Page 4: Microcomputer's Terminal Description

    KDC-232MR COMPONENTS DESCRIPTION Ref. No. Application / Function Operation / Condition Q4 SW “ON” When P. ON signal goes “L” (SW+5V is ON). ANALOG +8V SW “ON” When P. ON signal goes “L” (Q3 is ON). Q5, 6 CURRENT AMP Current driver.
  • Page 5 KDC-232MR MICROCOMPUTER’S TERMINAL DESCRIPTION Truth Value Pin No. Pin Name Application Processing/Operation/Description Table LX RST Forced reset to slave unit H: Reset, L: Normal LX CON Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF LX REQ M...
  • Page 6 Load OEM model (with CRSC changed) Eject KENWOOD brand model (with CRSC changed) Hi-Z Stop KENWOOD brand model (to support test-driving in EU) Hi-Z Brake w RDS AFSL (AF search) t DESTINATION Normal condition communication (IC10 side : High) TYPE 3...

  • Page 7: Cd Mechanism Μ-Com : Ic2 On X32- (Cd Player Unit)

    KDC-232MR MICROCOMPUTER’S TERMINAL DESCRIPTION CD MECHANISM µ-COM : IC2 on X32- (CD PLAYER UNIT) Pin No. Pin Name Application Processing Operation Traverse drive output (PWM output). Spindle motor drive output (PWM output). No connection. Multipurpose PWM output. TBAL Tracking balance adjustment output (PWM output).
  • Page 8 KDC-232MR MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Application Processing Operation 12EJE/SDET SW Loading-end detection / H : Loading-end detection LOE/LIM SW Pick-up inner circumference detection. L : Pick-up inner circumference detection 45~49 No connection. DVDD2 Power supply for digital circuit.

  • Page 9: Test Mode

    KDC-232MR TEST MODE How to enter the test mode AUDIO adjust mode Press and hold the [1] and [3] keys and reset. • Press the [AUD] key and enter the audio adjustment mode. (While “– – – –” is being displayed, power can be ON for 30 •...
  • Page 10 KDC-232MR TEST MODE OEM display communication [3] key Key pressed: Power ON time is displayed. While Power ON time is displayed, press and hold for 2 OEM display communication line while in test mode outputs seconds or longer to clear the Power ON time.
  • Page 11 KDC-232MR TEST MODE ∗ Operation 2 CD information display mode 1. After code has been registered, in STANDBY source, [AM] I2C communication condition display (Display) I2C_OK__ press and hold the [Q] key for 1 second or longer to go into the MENU. While “CODE_CLR” is displayed, press...
  • Page 12 KDC-232MR TEST MODE Once this product detected a DC offset error, even if it is re- FAST4 software-mute adjustment mode started (or reset), its display displays “DC_ERR_”. 1. Press and hold [1] and [6] keys and reset-start to go into the However, if the error is detected while in Test Mode, it is not FAST4 software mute adjustment mode.
  • Page 13 KDC-232MR ADJUSTMENT After replacing the following parts, adjust as follows. 1st AM MIX / 2nd AM MIX ADJUSTMENT ADJUSTMENT POINT : L508 (1st AM MIX) / L509 (2nd AM MIX) REPLACED PARTS ADJUSTMENT ITEMS VOLTAGE VALUE CHECK POINT : S-METER check land (X34-) Ref.
  • Page 14 KDC-232MR PC BOARD (FOIL SIDE VIEW) ELECTRIC UNIT X34-4160-12 (J76-0048-42) J1/L51 W351 W312 W352 W423 W841 W842 C258 W398 W405 W406 W346 R273 R252 R257 R251 R271 Q252 W333 W340 W318 L101 W321 W338 R456 C119 W328 C201 W329 R454...
  • Page 15 KDC-232MR W312 W335 2 3 4 8 12 11 13 W251 C256 W252 C257 C258 C255 R254 R253 Q352 Q351 C521 W346 L505 L518 C303 C525 L600 W331 C507 D503 L501 L520 Q330 W317 W306 W323 C516 W340 C332 L506...

  • Page 16: Pc Board (Component Side View)

    KDC-232MR PC BOARD (COMPONENT SIDE VIEW) CD PLAYER UNIT X32-5750-00 (J76-0059-12) X32-5750-00 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 17 KDC-232MR PC BOARD (FOIL SIDE VIEW) CD PLAYER UNIT X32-5750-00 (J76-0059-12) SLED DRVMUTE SPDL LOE/LIM A.GND A.+8V C100 R100 /MRST /MSTOP SLED OUT /MUTEL /LOAD /MUTER SLED IN /EJECT BU.5V Vref 2 GCTL NRFDET RFENV TRCRS R8 R11 VDET C13 C16...
  • Page 18 KDC-232MR PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) SWITCH UNIT SWITCH UNIT X16-3500-11 (J76-0166-02) X16-3500-11 (J76-0166-02) PAN SW5V ILL D GND RTRY LED+B FL+B VFD RST DATAF DATAS REMO RTRY X16-3500-11 TDF DET Ref. No. Address ESD GND CP11...
  • Page 19 KDC-232MR ELECTRIC UNIT (X34-416x-xx) KDC-MP2032/MP4533 ONLY DAUGHTER UNIT (X89-2690-10) 2-PREOUT MUTE C221 R229 R221 10u16 Q221 CN91 CN90 4.7K CF51 CF52 L508 CF53 MUTE 10.700MHz 10.700MHz 10.700MHz 2 VDD Q222 Q225 W101 4.7K C222 R230 R222 10u16 (X89- ) Q221,222...
  • Page 20 KDC-232MR L602 D203 C201 L509 0.01 3,43 MUTE LOGIC CF54 450.000kHz C565 4.5V AM : 8.0V FM : 8.1V C512 AM : 4.1V 5.0V AM : 3.75V 10u16 FM : 5.2V FM : 0V VREF1 AMIFIN 4.0V GNDDEM FMREFDEMC TUNER 0.5V or...
  • Page 21 KDC-232MR REAR LX BUS ∗ TP339 TP338 TP340 ∗ ∗ C333 C334 680P 680P TP404 R335 R336 Q351 MUTE SW Q351 Q352 for Lch S-METER PRE OUT C565 TP408 Q352 MUTE SW for Rch ∗ PRE OUT R471 Q330 ∗...
  • Page 22 R251 R255 R256 R257 W252 368,377 GND LINE B LINE • DC voltages are as measured with a high impedance 150K 150K voltmeter. Values may vary slightly due to variations between individual instruments or/and units. KDC-232MR (1/2) X34-4160-12 (4/4)
  • Page 23 KDC-232MR SWITCH UNIT (X16-350x-xx) ANODE CONNECTION 3GA,3GB 1GA,1GB NAME R80 47 1/2W — col (Downside) R81 47 1/2W R82 47 1/2W Upside Downside col (Upside) — — — REMOTE — — ∗ SW5V SENSOR KEY MATRIX AUTO ∗ EJECT 100K...
  • Page 24 • DC voltages are as measured ∗ with a high impedance voltmeter. Values may vary slightly due to variations between individual in- ∗ ∗ struments or/and units. ∗ GREEN ∗ LED SW LED SW 2.2K 2.2K KDC-232MR (2/2) X16-3500-11 (2/2)
  • Page 25 KDC-232MR CD PLAYER UNIT (X32-5750-0x) RFENV D.GND C34 0.1 4.80V C32 0.1 BU+5V 470P 470P L.P.F. 3.10V 1.25V 2.40V 3.10V 3.10V 1.70V IREF R100 C100 8EJE SW 3.10V 1000P PLLF2 12EJE/SDET SW PLLF 3.84V 4.7K R39 1 4.80V 7.80V LOE/LIM SW 0.87pp...
  • Page 26 KDC-232MR IOP+ IOP- R7 3.6K 3.3K C45 0.1 C44 1000P C43 2200P 0.047 0.95pp 0.95pp R39 100K 2.50V 0.91pp 1000P 4.7K 2.45V VDET 220K 0.015 2.50V B/TE 4.80V 100K 220P 330P 4700P 2.00V 4.80V VREF 2.50V 4.7K 0.17V 2.69V 2.50V 1.8K...
  • Page 27 KDC-232MR EXPLODED VIEW (CD MECHANISM) DPU1 DFPC1 (X32) φ : N09-4460-05 M1.7x8.0 : N09-4472-15 M1.7x2.5 : N09-6004-05 : N09-6007-05 M2x2 φ : N09-6051-05 2x5(BLK) : N19-2163-04 1.6 WASHER : N39-2020-46 M2x2 : N09-6108-05 M2x3.5 φ : N09-6155-05 Parts with the exploded numbers larger than 700 are not supplied.

  • Page 28: Exploded View (Unit)

    KDC-232MR EXPLODED VIEW (UNIT) DME1 : N24-3015-48 : N80-2006-48 : N80-2008-43 : N83-3005-48 : N86-2610-48 : N80-3010-48 : N83-3005-48 : N83-3020-48 : N86-2606-48 (X34) (X16-) (X34-) Parts with the exploded numbers larger than 700 are not supplied.

  • Page 29: Parts List

    KDC-232MR 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 30 KDC-232MR PARTS LIST CD PLAYER UNIT (X32-5750-00) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation CK73GB1H472K CHIP C 4700PF RK73GB2A224J CHIP R 220K J 1/10W CK73GB1H222K CHIP C 2200PF RK73GB2A104J CHIP R 100K J 1/10W...
  • Page 31 KDC-232MR PARTS LIST ELECTRIC UNIT (X34-4160-12) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation CD04BF1C220M ELECTRO 22UF 16WV C564 CK73GB1A474K CHIP C 0.47UF C153 CK73GB1A105K CHIP C 1.0UF C565 CK73FB1C105K CHIP C 1.0UF C201...

  • Page 32: Electric Unit (X34-4160-12)

    KDC-232MR PARTS LIST ELECTRIC UNIT (X34-4160-12) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation N80-3010-48 PAN HEAD TAPTITE SCREW R257 RK73GB2A393J CHIP R J 1/10W N83-3005-48 PAN HEAD TAPTITE SCREW R271 RK73GB2A101J CHIP R...
  • Page 33 KDC-232MR PARTS LIST ELECTRIC UNIT (X34-4160-12) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation R544 RD14BB2C222J 2.2K J 1/6W W831 R92-1252-05 CHIP R 0 OHM J 1/16W R545 RK73GB2A333J CHIP R J 1/10W W832...
  • Page 34 KDC-232MR PARTS LIST MECHANISM ASSY (X92-5090-00) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation D10-4584-03 D10-4585-03 D10-4586-13 SLIDER D10-4587-52 SLIDER D10-4588-13 SLIDER D10-4595-04 D10-4596-24 D13-2151-04 GEAR D13-2152-04 GEAR D13-2153-04 GEAR D13-2154-04 GEAR D13-2155-04 WORM...
  • Page 35 KDC-232MR 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. 5 = Value...

  • Page 36: Specifications

    Current Consumption ......................... 10A Installation Size (Width) .................. 182mm (7-3/16inch) (Height) ................... 53mm (2-1/16inch) (Depth) ................. 155mm (6-1/10inch) Weight ........................1.40kg (3.1lbs) KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.

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