Kenwood DPX-3030, DPXMP-4030 Service manual

CD CASSETTE DSP RECEIVER

DPX-3030/MP4030

SERVICE MANUAL

This service manual not included mechanism information please refers to following service manuals.

CD mechanism operation description, circuit diagram and parts list are please refer to the service manual

X92-4430-00(B51-7889-00 : for DPX-3030) and X92-4460-00(B51-7891-00 : for DPX-MP4030).

Cassette mechanism operation description is please refer to the service manual D40-1132-05 (B51-7505-00).

FRONT GRASS ASSY B10-4377-08 : DPX-3030 M type B10-4378-08 : DPX-MP4030 K, M type

PANEL A64-2970-08 : DPX-3030 M type A64-2971-08 : DPX-MP4030 K,M type

REMOTE CONTROL ASSY RC-410 (A70-2025-05)

DC CORD ASSY (E30-4860-08)

B NR

ESCUTCHEON ASSY (B07-3046-04)

AUD

B.S

SCREW SET (N99-1724-05)

PWR OFF

MTL

FNC

Illustration is DPX-MP4030

MOUNTING PARTS SET (W09-0746-08)

DPX-3030/MP4030

BLOCK DIAGRAM / COMPONENTS DESCRIPTION

MAIN PWB

TU101

Q151

LPF PLL 2SK536

IC201

DOLBY/EQ/MS CXA2560Q

MOTOR

SW5V

CASSETTE MECHA. TN708

AUDIO 8V

TUNER

(AM/FM/NC/MPX)

Q102

FM+B DTA123Y

IC151

AUDIO8V

SERVO-C

IC251

MOTOR DRIVER BA6219BFP-Y

AUDIO8V

IC318

INPUT SEL BA3131

AUDIO8V

SW5VAUDIO8V

LC72135M

X151

7.2MHz 388mV

DOLBY LEVEL ADJ.

CONTROL PWB SUB PWB

RUBBER SW

LED11V

IC351

SPE ANA MIX AMP NJM4565MD

SW5V

IC352

SPE ANA BPF BA3830F

BU5V

IC2

RESET PST3438UL

BU5V BU5V

IC900 IC901

LCD DRIVER LC75808

LCD

D931

IC1

REMOTE SENSOR RS-171

VLCD7.5V UDZ7.5B

CD CHANGER

u-COM MN101C49KWB

AUDIO8V

IC301

E-VOL TDA7407

(VOL/BAL/EQ/FAD)

IC3

MUTE HD74HC27FP

BU5V

8.38MHz36.768kHz

BU5V

CD MECHA. DXM-6013

(DPX-3030) DXM-6403 (DPX-MP4030)

BU5V

MP3

IC331

DSP M65849B

Q611

BU-DET 2SC4081

Q612

ACC-DET 2SC4081

Q613

DIMMER 2SC4081

SW5V

IC4,5

EEP-ROM BR24C01AF

Q803

MP3-5V 2SB1565

Q800

SERVO7.5V 2SB1565

Q801

SERVO7.5V 2SB1184

DSP5V

IC501

POWER AMP TDA7386

I/F

Q658

SW5V DTA123Y

Q656

AUDIO8V 2SB1565

Q665

DSP5V 2SD1760

Q650

SERVO-C 2SC4483

AUDIO8V

IC850

PRE OUT SEL BA3129F

ACC

ILLUMI

BU-14V

Q853A,B/ Q854A,B

MUTE DTC343T

SP OUT

Q601

P-ANT 2SA1703

Q603

P-CONT 2SA1703

Q652

BU5V 2SB1565

Q654

SW14V IMD3A

Q663

MOTOR+B 2SC4483

Q660

LED11V 2SB1184

ILL+B

PRE OUT (R/N-F)

PRE OUT (FRONT)

16P CONNECTOR

13P DIN

CHANGER OUT

RCA

MAIN PWB UNIT

Ref.No.

IC1 MN101C49KWB IC2 PST3438UL SYSTEM RESET IC System reset IC IC3 HD74HC27FP MUTING SIGNAL SELECTOR Muting signal selector IC4 BR24C01AF EEPROM For security code EEPROM

IC151 LC72135M PLL

IC201 CXA2560Q CASSETTE SYSTEM IC IC251 BA6219BFP-Y MOTOR DRIVER Sub motor control for Cassette mechanism

IC301 TDA7407 ELECTRONIC VOLUME IC331 M65849BFP DSP DSP IC (built in digital delay, mixing amp, input selector, VR) IC351 NJM4565MD 1/2VCC, SA MIX AMP 1/2 VCC, spectr um analyzer mix amp IC352 BA3830F SPECTRUM ANALYZER IC Spectrum analyzer BPF (data output to IC1: pin4-pin9) IC381 BA3131FS SELECTOR Audio input selector (from controlled IC1: 86,87PIN) IC501 TDA7386 AUDIO POWER IC Audio power IC (built in power standby, muting, protection function)

Q1 DTA124EUA PRE MUTE SW Muting sw for pre output signal line Q2 DTA144EUA CD CH RESET SW Reset signal to external CD changer unit

Q3 DTA124EUA N/F MUTE SW Muting transistor for N/F output line (from IC1: 83PIN) Q101 DTC124EUA MONO/STEREO SW Tuner mono or stereo mode select sw Q102 DTA123JK FM+B SW Power supply for tuner unit (from controlled IC151: 7PIN) Q151 2SK536 LPF LPF for VT voltage (from IC151: 16PIN PD output)

Component Name Application/Function Operation/Condition/Compatibility

SYSTEM MICROPROCESSOR

System microprocessor

PLL IC (built-in IF counter, reference frequencies, phase comparator, pulse swallowed) CT Audio processor (built-in playback EQ, head select sw, Dolby NR system, muting, music signal interval detection)

Electronic volume (built-in input selector, VR control, muting function, EQ)

DPX-3030/MP4030

COMPONENTS DESCRIPTION

Ref.No.

Q301 DTC144EUA E-VOL MUTE SW Muting transistor for electronic volume Q351 DTC343TK SA MUTE Muting transistor for spectrum analyzer (from IC352) Q352 2SC4081 SA AGC AGC transistor for spectrum analyzer Q502 DTC114YUA AMP SVR SW SVR controlled for IC151 (from IC1: 77PIN) Q601 2SA1703-AN P-ANT AVR AVR for P-ANT circuit Q602 DTC114YUA P-ANT SW P-ANT control sw (from IC1: 90PIN) Q603 2SA1703-AN P-CONT AVR AVR for P-CONT circuit Q604 2SA1576A P-CONT PROTECTION Protection of P-CONT circuit Q605 DTA124EUA P-CONT PROTECTION Protection of P-CONT circuit Q606 DTC114EUA P-CONT SW Control sw for P-CONT (from IC1 : 91PIN) Q611 2SC4081 BU ON/OFF DETECTION SW BU detection sw (to IC1: 26PIN) Q612 2SC4081 Q613 DTC144EUA DIMMER DETECTION SW Dimmer detection sw (to IC1: 88PIN) Q650 2SA1703-AN SERVO C AVR AVR for CD servo circuit (13.6V) Q651 2SC4081 BU5V AVR AVR for BU5V line (5V) Q652 2SB1565 (E,F) BU5V AVR AVR for BU5V line (5V) Q653 2SC4081 SERVO C AVR AVR for CD servo circuit (13.6V) Q654 IMD3AL 14V SW Control sw for SW14 circuit (from IC1: 96PIN) Q655 2SD1760 DSP 5V AVR AVR for DSP 5V line (5V) Q656 2SB1565 (E,F) AUDIO 8V AVR AVR for AUDIO 8V (8V) Q657 2SC4081 AUDIO 8V AVR AVR for AUDIO 8V (8V) Q658 DTA123JK 5V SW Control sw for SW5V circuit (from IC1: 97pin) Q659 2SC4081 LED 11V AVR AVR for 3color LED (12V) Q660 2SB1184 LED 11V AVR AVR for 3color LED (12V) Q663 2SA1703-AN MOTOR+B AVR AVR for cassette mechanism motor (14V) Q664 DTC114YUA MOTOR+B CONTROL SW Control sw for cassette mechanism AVR (from IC1: 99PIN) Q665 IMD2A LED ON SW Control sw for 3coler LED AVR (from IC1: 98PIN)

Component Name Application/Function Operation/Condition/Compatibility

ACC ON/OFF DETECTION SW

ACC detection sw (to IC1: 89PIN)

SUB PWB UNIT

Ref.No.

IC850 BA3129F

Q800 2SB1565 (E,F) SERVO 7.5V AVR AVR for CD mechanism unit (for servo circuit) Q801 2SB1184 SERVO 7.5V AVR AVR for CD mechanism unit (for servo circuit) Q802 2SC4081 SERVO 7.5V AVR AVR for CD mechanism unit (for servo circuit) Q803 2SB1565 (E,F) MP3 5V AVR AVR for CD mechanism unit (for MP3 circuit) Q804 2SC4081 MP3 5V AVR AVR for CD mechanism unit for MP3 circuit)

Q852 DTC124EUA N/F SEL SW Control sw for N/F (from IC1: 85PIN) Q853A DTC343TK PRE MUTE Muting sw of pre out line (RL/NFL) Q853B DTC343TK PRE MUTE Muting sw of pre out line (RR/NFR) Q854A DTC343TK PRE MUTE Muting sw of pre out line (L) Q854B DTC343TK PRE MUTE Muting sw of pre out line (R)

Component Name Application/Function Operation/Condition/Compatibility

REAR/NON FADER SELECTOR SW

Select for pre output

CONTROL PWB UNIT

Ref.No.

IC900 LC75808W LCD DRIVER LCD driver, key input signal to system microprocessor IC901 RS-171

Q900 DTA124EUA REMO. CONTROL SW AVR control for remote control sensor

Q902 DTA124EUA KEY CONTROL SW Control sw for key matrix line

Q903 2SC4081 LED GREEN CONTROL SW Green LED driver

Q904 2SC4081 LED BLUE CONTROL SW Blue LED driver

Q905 2SC4081 LED RED CONTROL SW Red LED driver

Component Name Application/Function Operation/Condition/Compatibility

REMOTE CONTROL SENSOR

Remote control sensor

DPX-3030/MP4030

MICROCOMPUTER’S TERMINAL DESCRIPTION

IC1 (MAIN PWB UNIT)

Pin No.

Pin Name I/O Purpose / Description Processing Operation

1 VREF- - GND Connected to GND 2 REEL-S I Cassette mechanism for rotation of reel detection Rotation of reel pulse from supply part 3 REEL-T I Cassette mechanism for rotation of reel detection Rotation of reel pulse from take-up part 4 SA01 I Spectrum analyzer input terminal 63Hz input (from IC352,17PIN) 5 SA02 I Spectrum analyzer input terminal 150Hz input (from IC352,16PIN) 6 SA03 I Spectrum analyzer input terminal 330Hz input (from IC352,15PIN) 7 SA04 I Spectrum analyzer input terminal 1KHz input (from IC352,14PIN) 8 SA05 I Spectrum analyzer input terminal 3.3KHz input (from IC352,13PIN) 9 SA06 I Spectrum analyzer input terminal 10KHzinput (from IC352,12PIN)

10 VREF+ - Power supply input terminal Connected to BU+5V 11 VDD1 - Power supply input terminal Connected to BU+5V 12 OSC2 O Main crystal output terminal X1 (8.38MHz) 13 OSC1 I Main cr ystal input terminal X1 (8.38MHz) 14 VSS - GND Connected to GND 15 XI I Sub crystal input terminal X2 (32.768KHz) 16 XO O Sub crystal output terminal X2 (32.768KHz) 17 MMOD I Memory extension mode setting input terminal Connected to GND 18 MODE3 I 19 MODE1 I 20 MODE2 I 21 CH-DATAH O Control of external CD Changer Data out put for external CD changer 22 CH-DATAC I Control of external CD Changer Data input from external CD changer 23 CH-CLK I/O Control of external CD Changer 24 BEEP O BEEP sound output terminal BEEP ON "H" BEEP OFF "L" 25 SUB M+ O Motor driver control output terminal Control of sub motor for cassette mechanism 26 BU-DET I BU voltage detection input terminal L : BU detection 27 CH-REQC I Control of external CD Changer REQ input from external CD changer 28 REMO I Remote control signal input terminal Remote control signal input terminal 29 LCD-DI I LCD driver control output terminal DATA input form LCD dr iver (from IC900, 97PIN)

30-32 NC I - Connected to GND

33 /RESET I System reset input terminal L : RESET 34 LED RED O Adjustment of brightness for LED PWM output for RED LED 35 SUB M- O Motor driver control output terminal Control of sub motor for cassette mechanism 36 LED BLU O Adjustment of brightness for LED PWM output for BLUE LED

37 ILL ON O

38 /LCD-INH O Control of LCD driver INH output for LCD driver (to IC900, 96PIN) 39 LCD-CE O Control of LCD driver CE output for LCD driver(to IC900, 98PIN) 40 LED GRN O Adjustment of brightness for LED PWM output for GREEN LED 41 NC O - Connected to GND 42 LCD-DO O Control of LCD driver DATA output for LCD driver (to IC900, 100PIN) 43 LCD-DI I Control of LCD driver DATA input from LCD driver (from IC900, 97PIN) 44 LCD-CLK O Control of LCD dr iver CLK output for LCD driver (to IC900, 99PIN)

Operation mode of cassette mechanism detection input terminal Operation mode of cassette mechanism detection input terminal Operation mode of cassette mechanism detection input terminal

Illumination LE power supply control output terminal (to operation key)

SW3 from cassette mechanism SW1 from cassette mechanism SW2 from cassette mechanism

CLOCK input / output terminal for external CD changer

H : illumination ON

DPX-3030/MP4030

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No.

Pin Name I/O Purpose / Description Processing Operation

45 I2C-SDA I/O Control of CD mechanism 46 NC O - Connected to GND

47 I2C-SCL I/O Control of CD mechanism

48 DMA-SCL I/O Control of input/output clock for exter nal ROM NC 49 DMA-SDA I/O Control of input/output data for external ROM NC 50 JS TYPE1 I Mode change of Chastity model or on the market model L : On the market model 51 JS TYPE2 I Mode change of Chastity model or on the market model L : On the market model 52 /CD/MP3 I Mode change for destination L : DPX-3030 H : DPX-MP4030 53 TYPE1 I Mode change for destination L : M type H : K type 54 TYPE2 I Mode change for destination L : K type H : M type 55 TYPE3 I Mode change for destination L : ALL MODEL 56 MS-MODE O Blank detection mode control of TAPE function L : FF/REW H : PLAY (to IC201, 20PIN) 57 C-F/R O Playback head switching control output terminal L : FORWARD H : REVERES (to IC201, 19PIN) 58 /MTL O Playback equalizer control L : 70usec H : 120usec 59 C-MUTE O Muting for cassette L : MUTE OFF H : MUTE ON (to IC201, 17PIN) 60 DOLBY O Dolby NR SW L : NR OFF H : NR ON (to IC201, 16PIN)

61 /MS IN I Blank detection input terminal

62 PLL CE O Control of PLL IC CE signal output for PLL IC (to IC151, 2PIN) 63 PLL DI I Control of PLL IC Data signal input form PLL IC (to IC151, 5PIN) 64 PLL DO O Control of PLL IC Data signal output for PLL IC (to IC151, 3PIN) 65 PLL CLK O Control of PLL IC Clock signal output for PLL IC (to IC151, 5PIN)

66 /SD/ST-IND I F/E SD, ST-IND input terminal

67 CD-SW2 I Control of CD mechanism 12cm DISC EJ END detection form CD mechanism 68 CD-SW1 I Control of CD mechanism 69

/CD-MUTE-L 70 /CD-RST O System reset output terminal L : RESET 71 /CD-STOP O Control of CD mechanism (for CD STOP mode) H : PLAY L : STOP

72 CD-SW4 I Control of CD mechanism

73 CD-SW3 I Control of CD mechanism 74 CD-LO/EJ I/O Control of CD mechanism 75 CD-LMON O Control of CD mechanism To motor driver SW output 76

/AMP-MUTE

77 AMP-SVR O Control of power pack IC for SVR mode

/AMP-STBY 79 DSP-DATA O Control of DSP Data output for DSP IC (to IC331, 5PIN) 80 DSP-STB O Control of DSP Strobe signal for DSP IC (to IC331, 4PIN) 81 DSP-CLK O Control of DSP Clock signal for DSP IC (tor IC331, 3PIN) 82 SA-MUTE O Muting for spectrum analyzer input signal NC

I Control of CD mechanism Control of muting signal from CD mechanism

O Control of power pack IC for muting mode L : MUTE ON (to IC501 : 22PIN)

O Control of power pack IC for standby mode L : Standby H : AMP ON (to IC501, 4PIN)

E VOL and E2P ROM input / output data for CD mechanism

E VOL and E2P ROM input / output clock signal for CD mechanism

Blanc of music : H found in music : L (from IC201, 14PIN)

SEEK function H : receive the radio station, Tuner mode H : MONO L : Stereo

LOADING START SW detection form CD mechanism

Detection of 8cmDISC EJ END SW input (form CD mechanism) Detection of down limit SW input (form CD mechanism) LO/EJ SW input/output control signal (from CD mechanism)

Control of pop noise for Power pack IC (power ON/OFF function)

DPX-3030/MP4030

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No.

Pin Name I/O Purpose / Description Processing Operation

/N/F-MUTE

84 MUTE O Control of AUDIO muting H : MUTE ON L : MUTE OFF

N/F SEL F/R

86 SEL1 O Audio selector control terminal (TUNER/TAPE/CD) Control of IC381 (reference of list) 87 SEL2 O Audio selector control terminal (TUNER/TAPE/CD) Control of IC381 (reference of list) 88 /DIMMER I DIMMER function input terminal L : Illumination ON (from DIMMER DET : Q613) 89 ACC-DET I ACC voltage detection input terminal L : ACC ON (to A CC DET : Q612) 90 P-ANT O Control of Power-ANT output terminal Tuner mode : H CD/CASSETTE/CD CHANGER : L 91 P-CONT O Control of external power AMP H : ON (to Power control : Q606) 92 NC O - Connected to GND 93 CH-REQH O Control of exter nal CD Changer REQ out put for external CD changer 94 CH-CONT O Control of external CD Changer H : CD changer pow er ON 95 DAVSS - GND Connected to GND 96 P-ON O Control of power supply for SW14V H : ON (to SW14V : Q664) 97 /SW5V O Control of power supply for SW5V L : ON (to SW5V : Q658) 98 3LED-ON O Control of power supply for 3color LED H : ON (to LED11V : Q665) 99 MOTOR O Control of power supply for cassette mechanism motor H : ON=TAPE play (to MOTOR+B : Q664)

100 DAVDD - Power supply input terminal Connected to BU+5V

O Control of ON/OFF for N/F output H : MUTE OFF L : MUTE ON

O Mode change of FAD or N/F output

H : FRONT L : REAR for FAD mode output : REAR, N/Mode output F/R)

Audio input selector

SEL1 (86PIN) SEL2 (87PIN) TUNER H H TAPE L H CD H L OFF/ OTHERS L L

PLL Extension IC : IC151 (MAIN PWB UNIT)

Pin No.

Pin Name I/O Purpose / Description Processing Operation

6 IF CTRL O 7 FM O Change of mode for FM function (to VCC) L : FM H : AM

9 MO/ST O Change of forced mode for monophonic

10 AM IFC I AM IF count input terminal

8,11,12

NC O NC -

Request of a function IF count, and SEEK mode signal output

L : Receive the radio station H : SEEK function

L : STEREO H : Forced mode for monophonic : This pin condition is L when SEEK mode (for STEREO for monophonic). Into AM SEEK mode was stopped when it is carried out with AM-SD.

indicator cut off when forced mode

DPX-3030/MP4030

ADJUSTMENT

• Setting for the unit condition as follows. BALANCE/BASS/TREBLE/FADER : Center Position, DOLBY/LOUD/DSP : OFF TUNER BAND : FM

No. ITEM INPUT OUTPUT TUNER ALIGNMENT ALIGN FOR FIG

SETTINGS SETTINGS (RECEIVER) POINT

SETTINGS

FM TUNER SECTION

1 DISCRIMINATOR 98.1MHz 0dbv, Connect a DC FM 98.1MHz T F/E (TU101) 0V (a)

60dbµ, (ANT Voltmeter to TP input) F/E (TU101)

TAPE DECK SECTION

1 CLEANING - - - PB Head, capstan, Clean the PB Haed,capstan and pinch roller using a -

pinch roller cotton swab slightly damped with alcohol

2 AZIMUTH (Tape MTT-902 Mirror - PLAY Azimuth Playing the mirror tape in FWD mode, adjust the (b)

running condition) Tape adjustment screw azim uth adjustment screw (A) and (B) so as to e

FWD (A), REV (B) liminate a curl at the guides on both ends of head

while looking in to the mirror tape. After that you can adjust same manner for the REV side.

3 AZIMUTH TCC-153 10KHz, Connect the AC PLAY Azimuth Adjust the output to maximum and adjust the azimuth (b)

-10db Voltmeter and adjustment screw adjustment screw for the Lissajours waveform pattern Oscilloscope to pri FWD (A), REV (B) of the oscilloscope to become close to a 45°straight output ter minal line.

PLAY BACK LEVEL (Dolby Level) Dolby Voltmeter to VR201B (R) Adjust the L/R channel for FWD side.

TCC-130 400Hz, Connect the AC PLAY VR201A (L), 388mV (-6dbs) (c)

between Dolby After adjusting the FWD side, check the playback level output and level for the REW side so that the playback lever are GND. between 330mV to 480mV.

MAIN PWB UNIT

CASSETTE MECHANISM

(b)

FWD

REV

VR201A Lch

TUNER UNIT

Dolby Level

101

VR201B Rch

TUNER UNIT

TU101

TO GND

DOLBY Lch

DOLBY Rch

MAIN PWB UNIT (foil side)

(a) 0V

DC voltmeter

AC voltmeter

A B C D E

PC BOARD (FOIL SIDE VIEW)

SUB UNIT

Q800

Q801

JW811

C802

C803

JW81 0

Q802

D800

R800

C801

C811

JW809

D801

JW808

JW81 8

JW807

C800

CN800

JW814

JW813

JW815

R850

R852

R853

JW879

JW857

JW878

IC850

JW856

IC851

C860

JW817

JW816

C850

C851

JW858

Q852

JW859 JW875

C852

R851

C814

D802

JW855

C813B

C813A

R873A

R802

JW877

R873B

Q803

Q804

C808

C807

JW806

JW805

JW812

C810

D851

C856A

C856B

C853A

JW860

R863B

R854B

JW876

R854A

R863A

R872A

R872B

R866A

R866B R860A

JW862

C853B

C859B

C858B

JW804

C812

D850

R860B

C858A

C859A

C809

JW803

JW863JW864

D852

JW854

013WJ

011

JW802

Q854A

EBEBEB

Q853B

JW853

011WM

JW801

R871

Q854B

Q853A

R870

JW852

JW851

R867A

R861B

011WK

C857A

C857B C854A

R867B

R861A

C854B

WHIIE

010WM

RED

1313

010WJ

D892A

ET850

ET800

CN801

R868A

R868B

R862A

R862B

D890B

CN850

013

CN852

CN851

C890

010

C891

D893

D892B

D890A

D891

SUB UNIT

IC Q

Address

IC Q

Address

IC Q

Address

850 5C

800 2C 801 2B 802 2C

803 2C 804 2C 852 5B

853A

853B

854A

854B

Refer to the schematic diagram for the values of resistors and capacitors.

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