© 2004-7 PRINTED IN JAPAN
B53-0190-00 (N) 1033
CD CASSETTE RECEIVER
DPX-MP4070
DPX-MP4070B
SERVICE MANUAL
Depends on the model. Refer to the exploded view and parts list.
REMOTE CONTROLLER ASSY (RC-505)
(A70-2059-05)
DC CORD ASSY
(E30-6405-08)
SCREW SET
(N99-1724-05)
BATTERY
(Not supplied)
DPX-MP4070/MP4070B
2
BLOCK DIAGRAM
N-F
A
D
REAR
FR
ONT
TU221
IC301
SELECTOR
INPUT
IC101
E. VOL
BASS/TRE/FADER
IC12
PLL
IC601
POWER
AMP
AUDIO 8V
BU 5V
ANT CONT
LINE MUTE
BU DET
ACC DET
ILLUMI
P. CONT
LED 11V
IC2
SYSTEM
RESET
WOW
IC103
-12.7dB
(DPX-05MD)
MD MECHA
DRIVE
CASSETTE
MECHA
IC351
CD MECHA
MAIN u-COM
IC1
REMOTE
IC921
IC901
LCD
DRIVER
LED
KEY
LCD
TUNER
CASSETTE
MECHA
DPX-04
DPX-3070
DPX-MP4070
DPX-3070
DPX-MP4070
DPX-04
CD CH
AUX IN
ANT
PRE OUT
DPX-MP4070
DPX-3070
SP OUT
PRE OUT
LINE MUTE
ANT CONT
P. CONT
ILLUMI
BU
ACC
(REAR/N-FAD)
(FRONT)
DPX-3070
DPX-MP4070
DPX-05MD
DPX-3070
DPX-MP4070
DPX-05MD
DPX-MP4070
DPX-3070
DPX-3070
DPX-MP4070
DPX-05MD
CONTROL UNIT
MAIN UNIT
S7V
A8V
BU5V
D5V
A3.3V
SW3.3V
BU3.3V
B
U2.5V
CD PLAYER UNIT (X32-5500-01)
IC1
MECHANISM
CONTROL
Q8
APC
Q9,10
C-SW
IC4
4ch BTL
DRIVER
M
M
DM1
DM2
SPINDLE
MOTOR
LOADING
MOTOR
& SLED
S1
S2
IC9
DAC 3.3V
AVR
Q3,5,6
S3
S4
LEVEL SHIFT
Q7
Q1,4
LEVEL
SHIFT
MICROPROCESSOR
AVR
BU 3.3V
IC6
DAC 3.3V
AVR
IC7
SW 3.3V
AVR
IC5
LEVEL
SHIFT
IC3
MP3/WMA
DECODER
IC2
PROCESSOR
RF AMP/SERVO
CD SIGNAL
BUFFER
IC8
FO COIL
TR COIL
(OPTICAL PICKUP)
A
C
F
B
E
DPU1
LD
PD
CN2
CN1
15
DGND
DATA
CLK
MUTER
MUTEL
MSTOP
MRST
10
LOS
20
1
8EJE
A8V
L
AGND
DOUT
R
MOTOR
LO/EJ
5
SGND
S7V
12EJE
LOE/LIM
X2
16.00MHz
16.898MHz
X1
OPEN
D5
DGND
D5
24
BU5
3
3
8
1
2
4
4
4
4
VREF
SLD
TRK
FCS
SPD
516
PON
DPX-MP4070/MP4070B
3
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
COMPONENTS DESCRIPTION
DPX-MP4070/MP4070B
4
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 servo processing. Automatic
IC1
MECHANISM CONTROL MICRO PROCESSOR
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)
IC2
RF AMP/SERVO CD SIGNAL PROCESSOR
signals.
Detection of dropout, anti-shock, track crossing and off-track conditions,
included gain control function during CD-RW.
IC3
MP3/WMA DECODER
IC4
4ch BTL DRIVER
Focusing coil, tracking coil, spindle motor and sled motor driver, disc
loading and eject operation.
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.
DPX-MP4070/MP4070B
5
MAIN
µ-COM : MN101C49KWG (MAIN UNIT : IC1)
Pin No.
Active
Pin Name
I/O
Application
Processing Operation
(H/L)
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
6H
ACC DET
I
ACC power supply detection
H : ACC OFF
7L
ILLUMI DET
I
Dimmer illumination detection
L : ILUMMI ON
8
JS1
I
Destination setting 3
9
CD MECHA SEL
I
CD mechanism selection terminal
H : MP3 CD mechanism
L : NORMAL CD mechanism
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
L : Normal condition, H : Momentary power down
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
MICROCOMPUTER'S TERMINAL DESCRIPTION