Kenwood DPXMP-4070, DPXMP-4070-B Service manual

CD CASSETTE RECEIVER

DP X-MP4070
DP X-MP4070B

SERVICE MANUAL

© 2004-7 PRINTED IN JAPAN
B53-0190-00 (N) 1033

REMOTE CONTROLLER ASSY (RC-505)
(A70-2059-05)

BATTERY
(Not supplied)

DC CORD ASSY
(E30-6405-08)

Depends on the model. Refer to the exploded view and parts list.

SCREW SET
(N99-1724-05)

DPX-MP4070/MP4070B

BLOCK DIAGRAM

DPX-04
DPX-3070
DPX-MP4070

AUX IN

CD CH

ANT

TU221 IC301

TUNER

INPUT
SELECTOR

IC12

PLL

MD MECHA
(DPX-05MD)

CASSETTE
MECHA

DPX-04
DPX-3070
DPX-MP4070

IC351

CASSETTE
MECHA
DRIVE

CD MECHA

CONTROL UNIT

IC101

IC1

IC921

REMOTE

MAIN UNIT

E. VOL
BASS/TRE/FADER

REAR

N-FAD

FRONT

IC103

WOW

-12.7dB

MAIN u-COM

IC901

LCD
DRIVER

IC2

SYSTEM
RESET

LED

KEYLCD

IC601

POWER
AMP

AUDIO 8V

BU 5V

LINE MUTE

ANT CONT

P. CONT

ILLUMI

ACC DET

BU DET

LED 11V

PRE OUT
(FRONT)

SP OUT

PRE OUT
(REAR/N-FAD)

DPX-3070
DPX-MP4070

DPX-3070
DPX-MP4070

LINE MUTE

ANT CONT

P. CONT

ILLUMI

ACC

BU

DPX-05MD
DPX-3070
DPX-MP4070

DPX-05MD
DPX-3070
DPX-MP4070

DPX-05MD
DPX-3070
DPX-MP4070

CD PLAYER UNIT (X32-5500-01)

CN1

DOUT
12EJE

LOS
CLK

DATA

A8V

AGND

MUTER

MUTEL

MRST

MSTOP

8EJE

LOE/LIM

BU5

DGND
DGND

LO/EJ

MOTOR

S7V

SGND

24

OPEN

S2

S1

20

IC9

A8V

DAC 3.3V

L

R

15

AVR

3

S4

Q3,5,6

LEVEL
SHIFT

Q1,4

LEVEL
SHIFT

A3.3V

Q7

LEVEL SHIFT

S3

10

BU5V

IC5

D5V

D5
D5

5

1

SW 3.3V
AVR

2

IC1

MECHANISM
CONTROL
MICROPROCESSOR

SW3.3V

S7V

PON

IC6

BU 3.3V
AVR

BU3.3V

IC4

4ch BTL
DRIVER

8

X2

1

IC7

DAC 3.3V
AVR

IC3

MP3/WMA
DECODER

16.00MHz

3

IC2

RF AMP/SERVO
CD SIGNAL
PROCESSOR

BU2.5V

4

FCS

4

TRK
SPD

4

SLD

4

IC8

BUFFER

X1

16.898MHz

Q8

Q9,10

C-SW

516

VREF

APC

(OPTICAL PICKUP)

CN2

DM1

SPINDLE

M

MOTOR

DM2

LOADING
& SLED

M

MOTOR

DPU1

LD

PD

E

A

B

C

F

TR COIL

FO COIL

2

DPX-MP4070/MP4070B

COMPONENTS DESCRIPTION

● MAIN UNIT

Ref. No. Application / Function Operation / Condition

IC1 MAIN µ-COM Main microcomputer
IC2 RESET
IC3 MUTE
IC4 ROM COLLECTION
IC5 SECURITY ROM
IC12 PLL PLL for tuner
IC101 E-VOL Electric volume
IC103 WOW
IC104 WOW FOCUS
IC301 AUDIO SELECTOR Audio switch for cassette and tuner
IC351 CASSETTE MOTOR DRIVER Driver for cassette motor
IC601 POWER IC Output amplifier
Q1 RESET SW
Q5 FM VCC SW
Q101 E-VOL MUTE SW
Q141 WOW FOCUS SW
Q221 FM/AM VT DRIVER
Q271,272 PRE MUTE DRIVER Mute switch for preout
Q277 PRE MUTE SW
Q281,282 PRE MUTE DRIVER Mute switch for preout
Q287 PRE MUTE SW
Q802~805 P. CON SW (P-ANT SW)
Q806,807 P-ANT SW
Q808 POWER IC STANDBY SW
Q809 BACK-UP DET SW
Q810 ACC DET SW
Q811 ILLUMI DET SW
Q812 BMS CONTROL DRIVER External amplifier driver
Q813 BACK-UP DET SW
Q851 P. ON SW
Q852~854 S7.5V AVR 7.5V power supply for CD mechanism
Q855,856 D5V AVR 5V power supply for CD mechanism
Q857,858 BU5V AVR
Q859 SW5V SW
Q860 SW5V DRIVER
Q861,862 MOTOR+B SW Power supply for cassette motor
Q863,864 A8V AVR 8V power supply for audio
Q865 P. ON-ILULMI SW
Q866,867 LED11V AVR 11V power supply for LED
Q868,869 MAIN MOTOR+B SW Power supply for cassette main motor
Q870 P. ON SW

3

DPX-MP4070/MP4070B

● CONTROL UNIT

Ref. No. Application / Function Operation / Condition

IC901 LCD DRIVER LCD driver
IC921 REMOTE Receives remote signal
Q903 RED LED SW
Q904 BLUE LED SW
Q905 GREEN LED SW
Q906 SECURITY INDICATOR SW
Q921 REMOTE SW

● EQUALIZER UNIT

Ref. No. Application / Function Operation / Condition

IC250 DOLBY/EQUALIZER Cassette audio equalizer

● CD PLAYER UNIT (X32-5500-01)

Ref. No. Application / Function Operation / Condition

Focusing, tracking, sled and spindle servoprocessing. Automatic

IC1 MECHANISM CONTROL MICRO PROCESSOR

IC2 RF AMP/SERVO CD SIGNAL PROCESSOR signals.

IC3 MP3/WMA DECODER

IC4 4ch BTL DRIVER

IC5 SW 3.3V AVR
IC6 BU 3.3V AVR 3.3V power supply for back-up.
IC7 BU 2.5V AVR 2.5V power supply for back-up.
IC8 SELECTOR (SERIAL DATA) Serial audio data switch.
IC9 DAC 3.3V AVR 3.3V power supply for IC2.
Q1 LEVEL SHIFT 3.3V to 5.0V.
Q3-7 LEVEL SHIFT 3.3V to 5.0V.
Q8 AUTOMATIC POWER CONTROL LD driver.
Q9,10 SWITCH Switch for anticipation sub-beam delay.

adjustment (Focusing, tracking, gain, offset and balance) operations.
Digital signal processing (DSP, PLL, sub-codes, CIRC error correction,
audio data interpolation) operations, and microcomputer function.
Generation of RF signal based on the signals from the APC circuit and
pickup, and generation of servo error (Focusing error and tracking error)

Detection of dropout, anti-shock, track crossing and off-track conditions,
included gain control function during CD-RW.

Focusing coil, tracking coil, spindle motor and sled motor driver, disc
loading and eject operation.

4

DPX-MP4070/MP4070B

MICROCOMPUTER’S TERMINAL DESCRIPTION

● MAIN µ-COM : MN101C49KWG (MAIN UNIT : IC1)

Pin No.

1 VREF- - µ-com reference voltage (–)
2 REEL S I Cassette mechanism reel rotation detection
3 REEL T I Cassette mechanism reel rotation detection
4 DC ERR I Power IC offset voltage observation
5 LINE MUTE I Line mute detection
6HACC DET I ACC power supply detection H : ACC OFF
7LILLUMI DET I Dimmer illumination detection L : ILUMMI ON
8 JS1 I Destination setting 3

9 CD MECHA SEL I CD mechanism selection terminal

10 VREF+ - µ-com reference voltage (+)
11 VDD - Power supply for µ-com
12 OSC2 - Main clock output
13 OSC1 - Main clock input
14 VSS - GND for µ-com
15 XI - Sub clock input
16 XO - Sub clock output
17 MMOD - Memory mode setting
18 LX DATA M O Data to slave unit
19 LX DATA S I Data from slave unit
20 LX CLK I/O LX BUS clock
21 L MODE1 I Cassette mechanism condition detection SW1 H : Normal condition, L : Reset
22 L MODE2 I Cassette mechanism condition detection SW2
23 MODE3 I Cassette mechanism condition detection SW3
24 PWIC BEEP O Beep output
25 NC ­26 BU DET I Momentary power down detection
27 LX REQ S I Communication request from slave unit
28 REMO I Remote control signal input Pulse width detection
29 L DATA IN I Data input from LCD driver
30, 31 NC ­32 VDD2 - Power supply for µ-com
33 NRST - µ-com reset terminal L : Reset
34 LCD BLIGHT R O LCD back light control (Red) PWM control
35 NC ­36 LCD BLIGHT B O LCD back light control (Blue) PWM control
37 NC ­38 L INH O Turns off LCD display

Active

(H/L)

Pin Name I/O Application Processing Operation

H : MP3 CD mechanism
L : NORMAL CD mechanism

L : Normal condition, H : Momentary power down

5

DPX-MP4070/MP4070B

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No.

39 L CE O Data latch to LCD driver
40 LCD BLIGHT G O LCD back light control (Green) PWM control
41 VPP - Power supply terminal for flash memory writing
42 L DATA OUT O Data output terminal to LCD driver
43 L DATA IN I Data input from LCD driver
44 L CLK O Clock output terminal to LCD driver
45 SDA I/O E2PROM writing terminal
46 NC ­47 SCL I/O CD mechanism I2C clock output terminal

48 ROMCOL WR I

49 LED SI O LED control for security indicator
50 JS2 I Destination setting 4
51 TUN TYPE1 I Destination setting 2
52 TUN TYPE0 I Destination setting 1
53 SUB M+ O Cassette mechanism sub motor control
54 SUB M- O Cassette mechanism sub motor control
55 MS IN I Between-numbers detection signal input L : Number exists
56 H DOLBY O DOLBY NR H : DOLBY NR ON
57 H C MUTE O Equalizer mute H : MUTE ON
58 L METAL O Play-back equalizer switch L : METAL ON
59 C F/R O Head input switch L : Forward, H : Reverse
60 MS MODE O Detection sensitivity switch L : G1, H : G2
61 TUN CE O Tuner PLL data setting (CS)
62 TUN DI I Tuner PLL data setting (DATA IN)
63 TUN DO O Tuner PLL data setting (DATA OUT)
64 TUN CLK O Tuner PLL data setting (CLOCK)

65 SD/ST-IND I Front-end S-meter input

66 CD DISC12 SW I CD disk detection terminal (12cm)
67 CD LOS SW I CD loading detection terminal
68 CD MUTE R I CD mute (Rch) request terminal L : Rch mute request
69 CD MUTE L I CD mute (Lch) request terminal L : Lch mute request
70 L CD MRST O CD mechanism µ-com reset terminal H : Normal condition, L : Reset

71 L CD MSTOP O

72 CD DISC8 SW I CD disk detection terminal (8cm)
73 CD LOE LIM SW I CD detection terminal (Chucking switch) H : Loading completes, L : No disk
74 CD LOEJ O CD motor control terminal

Active

(H/L)

Pin Name I/O Application Processing Operation

Presence-or-absence setting for ROM collection
(E2PROM)

During seek operation, H: Number exists
During reception, H : Mono, L : Stereo

CD mechanism µ-com stop terminal

H : Mechanism µ-com activates
L : Mechanism µ-com stops

6

DPX-MP4070/MP4070B

MICROCOMPUTER’S TERMINAL DESCRIPTION

Pin No.

75 CD MOTOR O CD motor control terminal
76 L SW MUTE O Mute control for switch During mute : L
77 NC ­78 L PWIC STBY O Power IC standby control
79 L PWIC MUTE O Power IC mute control During momentary power down : H
80 ES SW O X’over filter select terminal 3
81 ES SEL2 O X’over filter select terminal 2
82 ES SEL1 O X’over filter select terminal 1
83 H AUD MUTE O Audio mute control terminal H : MUTE ON
84 WOW MODE3 O WOW IC control terminal 3
85 WOW MODE2 O WOW IC control terminal 2
86 WOW MODE1 O WOW IC control terminal 1
87 WOW Focus O WOW IC control terminal 4
88 SRC SEL1 O IC2-5 input source switch
89 BMS CTRL O External amplifier control
90 H PON ILL O Key illumination control (Flash EPM) H : ON
91 MOTOR+B O Cassette mechanism main motor control

92 H P ANT O

93 H P CON O External amplifier current control H : ON
94 L MUTE ACOUT O Mute on ACOUNT line L : MUTE
95 DAVSS - GND for µ-com
96 H PON O Power supply control H : ON
97 SW5V O SW 5V control H : ON
98 H LX CON O Start-up request to slave unit H : SLAVE UNIT ON, L : SLAVE UNIT OFF
99 LX REQ M O Communication request to slave unit
100 DAVDD - Power supply for µ-com

Active

(H/L)

Pin Name I/O Application Processing Operation

Power antenna control terminal
(When P. CON is Hi only)

H : ANT ON, L : ANT OFF

● KEY MATRIX TABLE

KS1 KS2 KS3 KS4 KS5
KI1 3 VOL+
LI2 2 VOL– SRC FM
KI3 1 ATT AM
KI4 WOW 4 5 CD EJ RESET
KI5 EQ 6 TAPE EJ DISP

• Multiple push

Frequency step switch (K/M destination) : 1 + 5 + SRC
After-sales service test mode in assembly line : ATT + WOW + SRC
DC offset forced clear : DISP + EQ + SRC

7

DPX-MP4070/MP4070B

MICROCOMPUTER’S TERMINAL DESCRIPTION

● CD MECHANISM µ-COM : IC1 on X32- (CD PLAYER UNIT)

Pin No.

1 VREFL - Reference power supply input terminal for ADC (L). GND
2AVSS - GND terminal for ADC. GND
3AVCC - Power supply terminal for ADC. Back-up 3.3V
4NC­5L20RST O Reset control (Decoder). L : Reset, H : Normal condition
6 20ACK I Acknowledge signal input (Decoder).
7 20STBY O Standby control (Decoder). H : Standby, L : Normal condition
8,9 NC ­10 20INT I Interrupt signal input (Decoder).
11 FOGUP I Focus gain-up interrupt. H : Focus gain-up, L : Normal condition
12 LZM I 0 bit mute detection (Lch). L : MUTE OFF, H : MUTE ON
13 RZM I 0 bit mute detection (Rch). L : MUTE OFF, H : MUTE ON
14,15 NC ­16 L 20CS O Chip select signal output (Decoder).
17 L 20LP O Latch pulse signal output (Decoder).
18 20TXD0 I/O Data output for serial data (Decoder). Except output condition, input condition is kept.
19 20RXD0 I Data input for serial data (Decoder).
20 20SCLK0 O Clock output for serial data (Decoder).
21 DSPTXD1 O Data output for serial data (DSP).
22 DSPRXD1 I Data input for serial data (DSP).
23 DSPSCLK1 O Clock output for serial data (DSP).
24 AM0 - ROM mode selection terminal. H : Normal condition, L : External ROM mode
25 DVCC - Back-up 3.3V.
26 X2 O Resonator terminal. 16MHz
27 DVSS - GND.
28 X1 I Resonator terminal. 16MHz
29 AM1 I “H” condition is fixed. Back-up 3.3V
30 L RESET I Reset detection. L : Reset, H : Normal condition
31~34 CN ­35 L DSPSTB O Data strobe signal output (DSP).

36 DSPA0 O

37 L DSPRST O Reset control (DSP).
38 DSPINT I Interrupt signal input (DSP). H : Interrupt
39 NC ­40 SEARCH O Search condition output. H : Search, L : Normal condition
41 LOE/LIM SW I CD inner circumference detection switch. H : Inner circumference
42~49 NC -

Active

(H/L)

Pin Name I/O Application Processing Operation

Command/Parameter identification signal output H : Parameter data output,
(DSP). L : Command data output

8

DPX-MP4070/MP4070B

Pin No.

50 FLAGIN I C 2Err impossibility detection.

51~61 NC ­62 DVSS - GND.
63 L NMI I Non-maskable interrupt request.
64 DVCC - Power supply terminal.
65~77 NC ­78 NC/BOOT I
79,80 NC ­81 POND3.3 O Digital 3.3V power-on control terminal. H : POWER ON
82 L MUTEL O Lch audio mute control.
83 L MUTER O Rch audio mute control.
84 SDA I/O I2C data (Main µ-com).
85 SCL I/O I2C clock (Main µ-com).
86 L MSTOP I Stand-by comeback interrupt. L : Stop, H : Stop is released.
87 NC ­88 L DMUTE O Driver mute. L : MUTE ON, H : MUTE OFF
89 DVCC - Power supply terminal.
90 NC ­91 DVSS - GND terminal.
92,93 NC ­94 MSEL I Memory capacity switching terminal. H : Capacity size down, L : Capacity size up
95 NC ­96 ASEL I Audio output polarity switch. H : Reverse output, L : Non-reverse output
97 CHSEL I Changer destination terminal. H : Changer, L : Other source
98 SEL0 I µ-com destination terminal 0.
99 SEL1 I µ-com destination terminal 1.
100 VREFH I Reference power supply input terminal for ADC (H). Back-up 3.3V

Active

(H/L)

Pin Name I/O Application Processing Operation

L : Correction is possible.
H : Correction is impossible.

Mask : Not connected. Flash : For writing (Active “L”).

L : Write, H : Nomal condition

9

DPX-MP4070/MP4070B

TEST MODE

● How to enter the test mode

• In order to enter the test mode, while pressing down [ATT]
+ [WOW] keys simultaneously, press [SRC] key.

● Test mode conditions

• The test mode starts up when ST ANDBY source is selected.

• The volume value is –10dB. (30 on the display)

• Beep prohibited.

• All lights displayed. (3-color LED lights up for all three col­ors. (white lighting))

• WOW : OFF

• EQ : Natural

● Test mode (Source : CD)

• When starting disc loading, tracks will be played starting
with the Track No. 9.

• The key operations below will be conducted only when the
source is CD.

Even when changes occur in the track number being pla yed

with the other sources, the play condition will persist.

Preset [1] key for Track No. 19
Preset [2] key for Track No. 5
Preset [3] key for Track No. 15
Preset [4] key for Track No. 14

•[

] key is to be used f or selecting preset tracks only. (Re-

fer to the table below.)

•[ ] key is to be used for down selection, as with regular
operation.

Current track Track to be searched

No. 1~No. 8, No. 14, No. 16~Max No. 9

No. 9 No. 15
No. 15 No. 10
No. 10 No. 11
No. 11 No. 12
No. 12 No. 13
No. 13 No. 14

• The settings for Q, Feq, and Ex are fixed.

Q 2.0

Bass Feq 150Hz

Ext ON

Mid

Treble Feq 10kHz

Q 2.0
Feq 1kHz

● Test mode (Audio adjustment)

• While the source is being displayed, long-clicking on the
[EQ/AUD] ke y will cause the unit to enter Adjustment Mode.
By toggling on the [FM] and [AM] key, the items below can
be selected and adjustments can be made with [
[ ] keys.
The balance adjustment is set for three steps

: RIGHT ↔ CENTER ↔ LEFT (L15, R15)

The fader adjustment is set for three steps

: FRONT ↔ CENTER ↔ REAR (F15 and R15)

] and

● Test mode (DC offset detection)

• When DC error detection is carried out during the Test Mode,
the unit shuts down without writing the error information to
the EEPROM. The other cases will be the same as the DC
offset specifications.

● Test mode (Display of DC offset detection results)

• When in this mode, the mode for “Display of DC offset de­tection results” will be added in the MENU items at the time
when Test Mode Standby is the source. This will make it
possible to confirm results with presence-or-absence de­tection.
MENU selection : DIMMER adjustment → … → (NAVI ATT
ON/OFF) → (CODE STBY) → Display of DC offset detec­tion results

• Display
DC offset detected : DC Err
DC offset not detected : DC OK

● Test mode (EQ adjustment)

• While the source is being displayed, clicking once on the
[EQ/AUD] ke y will cause the unit to enter Adjustment Mode.

When [1] key is pressed: Flat
When [2] key is pressed : Full-boost
When [3] key is pressed : Full-cut

10

✳ The detection information in the EEPROM can be forcibly

cleared by pressing [ ] or [ ] key for more than two
seconds while the DC offset detection (DC Err) is being
displayed. In this case, the display will be for DC offset not
detected. (DC OK).

DPX-MP4070/MP4070B

TEST MODE

● Test mode (Accumulated elapse time display)

• When in this mode, the mode for “Accum ulated Elapse Time
Display” will be added in the MENU items at the time when
Test Mode Standby is the source. This will make it possible
to confirm on the accumulated elapse time.

• MENU selection: DIMMER adjustment → … → (NAVI ATT
ON/OFF) → (CODE STBY) → Display of DC offset detec­tion results → Accumulated Elapse Time Display

✳ By pressing [ ] or [ ] key f or during Accumulated Elapse

Time Display, the sources for the accumulation can be
switched. (Repeating sequence : TAPE accumulation time
→ CD accumulation time → TAPE accumulation time)

● Releasing the test mode

• The Test Mode is released by the following sequence: Re­set, ACC OFF and ON, P ower OFF and ON. Also, by ACC
OFF and POWER OFF, the Source of T uner and Audio will
go into the initial conditions.

● Coping with backup current measurement

• Regardless of the Test Mode, when reset in the ACC OFF
state (backup ON), MUTE will be OFF after two seconds.
(The power for peripherals will not be turned OFF until the
CD mechanism stops. This will take two seconds plus.)

● Forced clearing of DC offset detection

• Regardless of the Test Mode, when power is turned on by
[SRC] key while depressing the f ollowing keys. This will be
the forced clearing of DC Err condition in the EEPOM. This
will clear the data in the EEPROM even in the case where
there is no error data.

• Key Operation
Press the [SRC] key while pressing the [DISP] and [EQ]
key at the same time.

ADJUSTMENT

BALANCE/FADER/BASS/TREBLE : CENTER
METAL/DOLBY NR : OFF

No. ITEM

CASSETTE DECK SECTION

DOLBY Connect an AC voltmeter between (EQUALIZER UNIT)

1 (PLAY BACK TCC-130 TAL (TP25) and TAG (GND), TAPE PLAY VR250A (L) 388mV

LEVEL) also between VR250B (R)

INPUT

SETTINGS SETTINGS POINTS

OUTPUT SETTINGS

(FOIL SIDE VIEW of MAIN UNIT)

TAR (TP24) and TAG (GND).

RECEIVER ALIGNMENT

ALIGN FOR FIG.

11

A B C D E

8

Q277

C622

RN14

DP X-MP4070/MP4070B

1

PC BOARD (COMPONENT SIDE VIEW)

MAIN UNIT

IC601

26

JW2

JW23

C603

22

23 33

IC101

34

C117

C116

BP

C303

R5

125

R6

R7

RN4

CN1

27

C604

C602

C601

JW5

C308

R54R55

C611

C107

C309

26100

C623

C612

C614

C613

R104

12

44

1

2

D601

R625

R103

C106

R102
R101

111

20

1

R56

D602

R623

C105

IC301

RN16

R630
R622

D101

C102
C103

R37

IC1

RN6

Q287

C104

1011

R308

RN5

D281

EB

RN15

D2

EB

C284

C302

RN7

JW8

CN201

JW6

2

3

13

9

R211

D205

11

10

R209

12

8

3

4

2

756

R210

C209

C207

R206

1

R202

D203

C202
R212

D204

C201

D201

R827

89

R830

C805

D804

D806

R824

C808

C807

R821

R820

116

D801

CN801

L801

JW17

JW14

JW9

C801

JW18

JW19

D207

R629

24

R632

1

2

D614

D613

D612

D611

JW22

1

CN291

CN292

D206

RN201

C206

14

13

C351

C360

JW15

C353

JW16

JW3
JW7

C153

C154

R351

E
B
C

D352

R352

Q865

C864

C
B
E

D819

R863
R864
C863

C146

C148

R149

EB

Q807

C803

4

EB

R808

C802

Q864

Q805

R807

BE

EB EB EB EB

D802

R803

R804

C860

5

Q858

C856

Q853

Q855

EB

Q852

R859

D814

Q868

EB

C853

C852

EB

6

R855

R856

Q854

E
B
C

Q851

C
B
E

R809

R812

R813

R811

R805

Q813

EB

D808

D809

D813

R826

Q812

BE

C830

R829

R828

E

C

B

B

C

E

Q870

R857

C855

111

D820

C858

R360

25

210

CN351

1

R359

C356

R356

R353

R355

R358

R354

C357

C358

C359

D816

R865

EBEEBB

Q869

Q862

D811

R357

R817

C862

Q859

D351

Q861

D812

EB

IC351

C355

RN351

C865

C354

C352

22

R144

R143

R148

C144

C145

R146

R147

12 25

IC103

C151

2413

R155

C155

R153

R152

R156

R151

R150

R154

JW20

JW1

RN18

17

IC3

Q866

JW24

C143

C141

C142

R142
R141
C164

R145

1

C163

48 37

C162
C161

C158

36

C157

45

1

8

C156

IC104

14 8

C9

R157

R159

Q141

EB

R164

R158

C1

R162

R160

R163

R1R2

C109
C110

C111
C112

R161

C4

R9

R13

16

C108

C115
BP

R3R4

R8

RN3

15

1

C101

RN17

RN1

X2

X1

C5

R10

7

12

R630
R622

C104

101

102
103

R308

RN5

D281

EB

Q287

1011

RN15

D283

C284

C302

RN7

C622

Q277

C283

RN14

C301

R34

5076

R20

Q282

R870

R869

X201

C374

75 51

R21

CN271B

Q281

L231

20

1

R238

BP

C304

R313

R23

D284

R287R278R277

C273

C373
BP

R30

Q272

EBEBEBEB EB

C274

RN13

RN12

RN9

RN8

C231

IC12

R239

91

C242

C243

RN11

Q271

C239

CN301

RN10

R53

D274

D333

L5

D332

11

10

102

C372

CN271A

13

CN331

C332

D331

C236

R236

C234

BP

C221

CN371

122

C371

R371

R372

R11

R14

R18

R15

R12

L4

R25

R27

R29

R24

R26

R28

R41

DSP221

TU221

R44
R45

R373

RN2

8

C6

1

ANT221

R43
R42

L221

18981

R52

R51

8

54

IC4

IC5

C7

1

5

4

C223

MAIN UNIT

Ref. No. Address

IC1 6E
IC3 6D
IC5 7G

IC12 4F
IC101 4E
IC103 4D
IC104 5D
IC301 5E
IC351 6C
IC601 2E

Q141 5D
Q271 2F
Q272 2F
Q277 3F
Q281 2F
Q282 2F
Q287 3E
Q805 4A

DPX-MP4070/MP4070B

EQUALIZER UNIT

5

24

CN250

1

VR250A

C259A

C259B

VR250B

Ref. No. Address

Q807 4B
Q812 4B
Q813 4B
Q851 7A
Q852 6B
Q853 6A
Q854 6A
Q855 6B
Q858 5A
Q859 5C
Q861 6B
Q862 7B
Q864 5A
Q865 7C
Q866 7D
Q868 7B
Q869 7B
Q870 5B

C260

C262A

BP

BP

C262B

C257

JIHGF

CN251

210

19

1

2

3

4

5

6

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

7

13