Kenwood DPX-MP7050 Service Manual
CD CASSETTE DSP RECEIVER
DPX-MP7050
SERVICE MANUAL
© 2003-10 PRINTED IN JAPAN
B53-0095-00 (N) 449
Panel (FRONT)
(A64-3340-08)
DOLBY B NR
DC cord assy
(E30-6332-08)
Remote controller assy(RC-515)
(A70-2042-05)
Size AA battery
Escutcheon assy
(B07-3046-04)
Screw set
(N99-1724-05)
2
TAPE
AM
CD
MUXCD
FRONT
REAR
FRONT
REAR
5L-BUS
12C-BUS
I2C-BUS
TUNER
SW IC
IC271
IC4
SW IC
TAPE (TN70B)
CD
CD-CH
AUX IN
MPX/NC
FADER
SW
(VOL)/
TONE
FADER
E VOL/MPX
IC2
SEL/VOL/LPF
IC5
SYSTEM E'S
HPF
MUTE
IC12
POWER IC
FRONT
REAR/
DSP
IC8
BUFF
IC9-11
E2P-ROM
IC901
PANEL u-COM
IC1
MAIN u-COM
LEVEL
IC903
REMOTE
SENSOR MATRIX
KEY
VFD
DRIVER
MOTOR
IC270
DRIVER
MOTOR
IC14
PANEL
MECHA
(DD-CONV)
SI-B033JD
DSP 3.3V
CD MECHA
DC/DC 11V
ILL 11V
TAPE 16V
CD SERVO 7.5V
SW 16V
DSP 3.3V
BU 5V
A 8V
REG IC
IC105
(MP3,WMA)
E2P-ROM
(EQ/DB)
TU1
EQ IC
IC250
(L/R/GND)
N-F
DRV
MUTE
DRV
SHIFT
Q201,301
Q202,302
IC904
DPX-MP7050
BLOCK DIAGRAM
DPX-MP7050
COMPONENTS DESCRIPTION
● MAIN UNIT
Ref. No. Application/Function Operation/Condition
IC1 MAIN µ-COM
IC2 Electronic V ol/MPX Electronic V ol/MPX
IC4 SW IC CD/TAPE
IC5 SYSTEM E'S SYSTEM E'S
IC7 Buff
IC8 DSP DSP
IC9~11 Buff
IC12 POWER IC
IC14 MOTOR DRIVER
IC15 RST
IC16 MUTE
IC17 REG IC
IC105 REG IC
IC150 REG IC MP3/WMA
IC250 EQ IC EQ/B NR
IC270 MOTOR DRIVER
IC271 SW IC AUX/CD-CH
Q1 BU_DET SW
Q2 ACC, BU_DET SW
Q3 ILL SW
Q5 ANP_CONT SW
Q6,7 P-ANT SW
Q8 P-CON SW
Q9 P-ON SW
Q10 SURVO7.5V SW
Q11~13 SURVO7.5V AVR 7.5V power supply for CD mechanism
Q16 MOTOR DRIVER SW
Q17,18 MOTOR DRIVER AVR Power supply for motor driver
Q19 ILL 11V SW
Q20,21 ILL 11V AVR Power supply for ILL
Q22 DD-CONV SW
Q23,24 DD-CONV AVR Power supply for DC/DC converter
Q26 LED OPEN SW
Q30 BU_DET SW
Q52 AM+B SW
Q53 FM+B SW
Q54 TUNER_CONT SW
Q101,102 RST SW
Q150,151 MAIN MOTOR AVR Power supply for the main motor driver of cassette mechanism
3
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