Kenwood DPX-4020 Service Manual
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Kenwood DPX-4020 Service Manual

Cd cassette dsp receiver
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See also: Service Manual , Instruction Manual
CD CASSETTE DSP RECEIVER
DPX-4020
SERVICE MANUAL
Dressing panel
(A21-4102-02)
AUD
FM+
DISC
Knob (VOL)
(K25-1302-03)
(N99-1701-05) : M type
(N99-1711-05) : K type
Badge
Panel assy
(B43-1284-04)
(A64-2383-02) : K type
(A64-2384-02) : M type
CD CASSETTE DSP RECEIVER
DIGITAL
SIGNAL
PROCESSOR
B NR
USER
B.S
1
2
3
SCRL
SCN
RDM
REP
Escutcheon assy
(B07-3046-04)
Screw set
Screw set
© 2001-5 PRINTED IN JAPAN
B51-7776-00 ( N ) 1734
Knob (CD EJ)
(K24-3716-03) : M type
(K24-3717-03) : K type
DOLBY B NR
DIGITAL AUDIO
DIGITAL
PULSE
AXIS
DPAC
CONTROL
METAL
4
5
6
ATT
M. RDM
Front glass
(B10-4063-01) : K type
(B10-4064-01) : M type
DC cord
(E30-4939-05)
Escutcheon assy
(B07-3047-04) : K type
OPEN
DISP
NAME.S
PWR
OFF
SRC
COMPACT
S.A
FNC
CD-R/CD-RW
AVAILABLE
T I

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Summary of Contents for Kenwood DPX-4020

  • Page 1 CD CASSETTE DSP RECEIVER DPX-4020 SERVICE MANUAL © 2001-5 PRINTED IN JAPAN B51-7776-00 ( N ) 1734 Dressing panel Badge Panel assy Knob (CD EJ) (A21-4102-02) (B43-1284-04) (A64-2383-02) : K type (K24-3716-03) : M type (A64-2384-02) : M type (K24-3717-03) : K type...
  • Page 2 CD CH : 1200mV CD CH : 1200mV B. U DSP OFF CAS : 440mV CAS : 440mV CD CH : 956mV FM : 340mV FM : 680mV PWR AMP CAS : 277mV AM : 170mV AM : 170mV E VOL, TONE, NC, MPX TDA7407 FM : 480mV TA8263BH...

  • Page 3: Components Description

    DPX-4020 COMPONENTS DESCRIPTION G SYNTHESIZER UNIT (X14-6710-XX) Ref.No. Component Name Application/Function Operation/Condition/Compatibility MN101C15FCP System micom TDA7407 Electronic volume TC4066BF(N) Analog SW Voice signal input switching (CD,.MD,CASSETTE) M65849BFP DSP IC BA3129F Switching ope-amplifier Voice signal output switching (FRONT,.REAR) TA8263BH PWR IC...
  • Page 4 DPX-4020 COMPONENTS DESCRIPTION G SUB CIRCUIT UNIT (X16-1250-00) Ref.No. Component Name Application/Function Operation/Condition/Compatibility SBX-3050 Remote control IC Light receive port of remote controller G DOLBY UNIT (X87-3040-00) Ref.No. Component Name Application/Function Operation/Condition/Compatibility CXA2560Q DOLBY IC PRE-AMP/DOLBY-EQ KRC103S Between-music detection level adjustment FF/REW FF/REW ON G SWITCH UNIT (X25-8970-00) Ref.No.

  • Page 5: Microcomputer's Terminal Description

    DPX-4020 MICROCOMPUTER'S TERMINAL DESCRIPTION G SYSTEM µ-COM (IC1:X14-6710-XX) MN101C15FCP Pin.No. Pin name Description Processing Operation VREF- Connected to GND. Not used. Connected to GND. FM_SD FM SD input. F_REEL Reel pulse (FWD) detection. Hi-Z R_REEL Reel pulse (REV) detection. Hi-Z Not used.
  • Page 6 DPX-4020 MICROCOMPUTER'S TERMINAL DESCRIPTION Pin.No. Pin name Description Processing Operation PN_MC_REQ Send request output to panel micom. PN_SC_CON Operation control output of panel micom. NON_FAD Control Non-Fad output. (ON/OFF) MUTE Audio mute output. TYPE1 Destination type input. TYPE2 Destination type input.
  • Page 7 DPX-4020 MICROCOMPUTER'S TERMINAL DESCRIPTION G PANEL µ-COM (IC1 : X25-8970-00) MN101C10AAL Pin.No. Pin name Description Processing Operation ANA4 Spectrum analyzer input.(1kHz) H(Hi-Z) ANA5 Spectrum analyzer input.(3.3kHz) H(Hi-Z) ANA6 Spectrum analyzer input.(10kHz) H(Hi-Z) Not used. Connected to GND. L(Hi-Z) Not used. Connected to GND.

  • Page 8: Test Mode / Adjustment

    DPX-4020 TEST MODE / ADJUSTMENT I How to enter the test mode I Test Mode (Audio Adjustment) While pressing on DSP + EQ or DSP + AM keys, press While displaying the source, by pressing EQ/AUD key in an SRC key. It is possible to enter the test mode in this manner.
  • Page 9 PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) X16-1250-00 (J74-1225-02) X16-1250-00 (J74-1225-02) (FOIL SIDE VIEW) X87-3040-00 (J74-1226-12) DOLBYL DOLBYR DOLBY X87-3040-00 Q address X16-1250-00 Q address Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 10 PC BOARD (COMPONENT SIDE VIEW) X14-6710-XX (J74-1223-12) C701 C206 C305 C205 C304 C702 R415 D204 D305 L701 C303 C705 D205 C707 R413 D304 D402 R412 D206 C314 R735 Q704 Q404 Q701 D303 C703 D704 C301 Q703 R410 R411 C419 C302 C316 C214 C216...
  • Page 11 PC BOARD (FOIL SIDE VIEW) C701 X14-6710-XX (J74-1223-12) C421 C417 2 3 4 11 13 C203 R209 R206 D204 C306 C801 R306 Q201 R309 Q301 Q302 R302 D305 D205 D304 Q202 D402 Q404 D206 C314 D303 C204 C301 C302 C316 C216 C214 C201...
  • Page 12 PC BOARD (COMPONENT SIDE VIEW) X32-5010-00 (J74-1158-12) CLVS DQSY R202 FCLK STLD TOFS SMCK ST-O TRCRS VDET IPFLAG /RFDET X32-5010-00 address Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 13 PC BOARD (FOIL SIDE VIEW) X32-5010-00 (J74-1158-12) /MUTEL MOTOR /MUTER LOAD SLED+ LO/EJ A.5V EJECT/SLED- R238 S.GND SPDL- S.+B /MSTOP /MRST R102 SPDL+ TRK- A.+B TRK+ FCS+ FCS- /RST DATA /CLK D.OUT BU.5V D.GND TBAL R234 FBAL LDCNT GCTL R233 LDON IOP+ Vref...
  • Page 14 PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) X25-8970-00 (J74-1224-12) X25-8970-00 (J74-1224-12) CP4 CP3 X25-8970-00 address Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 15 SIGNAL LINE SWITCH +B LINE DPX-4020 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 16 CH-IN (X14-6710-XX) R805 100 REQ C R807 100 DATA C D801 DC CN R808 100 RESET 5.0V 5.0V(0V) R674 4.7K D701 R610 Q602 D710 D707 C701 4700u16 2.5V D601 R704 R502 R716 4.7K R712 4.7K C516 Q601 3.3K C702 0.1 3.5V 0.15 MCLK CONT...
  • Page 17 PRE OUT (X14-6710-XX) FRONT L REAR L FRONT REAR WHT/BLK GRN/BLK MODEL UNIT R646 R647 NAME GRY/BLK VIOL/BLK DPX-4020 (K) 0-11 FRONT R REAR R VIOL DPX-4020(M) 0-21 PNK/BLK ANT CONT EXT. RF GND C215 C315 C217 C317 CONT BLU/WHT...
  • Page 18 REMOCON 100K 100K DPX-4020 (2/2) 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 19 DPX-4020 EXPLODED VIEW (CASSETTE MECHANISM ASSY) M2x2.5 (BLK) : N09-4324-08 FLAT WASHER : N19-2136-08 M2x13 : N09-4325-08 M2x3 (BLK) : N09-4326-08 M2x3 : N09-4058-08 FLAT WASHER : N19-2038-08 FLAT WASHER : N19-2136-08 FLAT WASHER : N19-2137-08 FLAT WASHER : N19-2138-08...
  • Page 20 DPX-4020 EXPLODED VIEW (CD MECHANISM ASSY) M1.7x2.5 N09-4249-05 2x3.5 N09-4172-05 M1.7x4 N09-4202-05 M2x2 N38-2020-46 N09-4294-05 WASHER 1.2 N19-2023-04 WASHER 1.6 N19-2058-04 WASHER 1.6 N19-2093-04 M2x2 N39-2020-46 DPU1 X32-5010-00 Parts with the exploded numbers larger than 700 are not supplied.

  • Page 21: Exploded View (Unit)

    DPX-4020 EXPLODED VIEW (UNIT) M2x3.5 (BLK) : N09-4463-05 M3x3.5 : N09-4469-05 M2.6x3 : N30-2603-46 M3x14 : N30-3014-46 φ 2x6 : N80-2006-46 φ 3x6 : N83-3006-46 M3x6 : N30-3006-46 φ 3x10 : N80-3010-46 M3x4 : N30-3004-46 φ 2x5 : N09-4377-05 (X87-)

  • Page 22: Exploded View (Display)

    DPX-4020 EXPLODED VIEW (DISPLAY) φ 2x6 (BLK) : N09-4467-05 φ 2x6 : N80-2006-46 φ 2x8 (BLK) : N80-2008-45 (X25-) Parts with the exploded numbers larger than 700 are not supplied.

  • Page 23: Parts List

    DPX-4020 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. Dest Dest Ref. No. Parts No. Description Ref. No.
  • Page 24 DPX-4020 PARTS LIST ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. SYNTHESIZER UNIT (X14-6710-XX) Teile ohne Parts No. werden nicht geliefert. Dest Dest Ref. No. Parts No.
  • Page 25 DPX-4020 PARTS LIST ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. SYNTHESIZER UNIT (X14-6710-XX) Teile ohne Parts No. werden nicht geliefert. Dest Dest Ref. No. Parts No.
  • Page 26 DPX-4020 PARTS LIST ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. SYNTHESIZER UNIT (X14-6710-XX) Teile ohne Parts No. werden nicht geliefert. Dest Dest Ref. No. Parts No.
  • Page 27 DPX-4020 PARTS LIST ∗ New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. SYNTHESIZER UNIT (X14-6710-XX) Teile ohne Parts No. werden nicht geliefert. Dest Dest Ref. No. Parts No.
  • Page 28 DPX-4020 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 (X25-8970-00) Teile ohne Parts No. werden nicht geliefert. Dest Dest Ref. No. Parts No.
  • Page 29 DPX-4020 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 (X32-5010-00) Teile ohne Parts No. werden nicht geliefert. Dest Dest Ref. No.
  • Page 30 DPX-4020 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 (X92-4130-00) Teile ohne Parts No. werden nicht geliefert. Dest Dest Ref. No.
  • Page 31 DPX-4020 PARTS LIST...

  • Page 32: Specifications

    (D)........155mm(6-1/8in) Weight ...............2.7kg Weight ............2.7kg (5.9lbs) KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. Manufactured under license from Dolby Laboratories. “Dolby” and the double-D symbol are trademarks of Dolby Laboratories.

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