Main Unit; Components Description; Equalizer Unit - Kenwood DPX-3070 Service Manual

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MAIN UNIT

Ref. No. Application / Function
MAIN µ-COM
IC1
IC2 RESET
IC3 MUTE
IC4 ROM COLLECTION
IC5 SECURITY ROM
IC12 PLL
IC101 E-VOL
IC103 WOW
IC104 WOW FOCUS
IC301 AUDIO SELECTOR
IC351 CASSETTE MOTOR DRIVER
IC601 POWER IC
Q1 RESET SW
Q5 FM VCC SW
Q101 E-VOL MUTE SW
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Q141 WOW FOCUS SW
L 13942296513
Q221 FM/AM VT DRIVER
Q271,272 PRE MUTE DRIVER
Q277 PRE MUTE SW
Q281,282 PRE MUTE DRIVER
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
Q813 BACK-UP DET SW
Q851 P. ON SW
Q852~854 S7.5V AVR
Q855,856 D5V AVR
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Q857,858 BU5V AVR
Q859 SW5V SW
.
Q860 SW5V DRIVER

COMPONENTS DESCRIPTION

Operation / Condition
Main microcomputer
PLL for tuner
Electric volume
Audio switch for cassette
and tuner
Driver for cassette motor
Output amplifier
Mute switch for preout
Mute switch for preout
External amplifier driver
7.5V power supply for
CD mechanism
5V power supply for
CD mechanism
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2 9
8
Ref. No. Application/Function
Q861,862 MOTOR+B SW
Q863,864 A8V AVR
Q865 P. ON-ILULMI SW
Q866,867 LED11V AVR
Q868,869 MAIN MOTOR+B SW
Q870 P. ON SW
CONTROL UNIT
Ref. No. Application/Function
IC901 LCD DRIVER
IC921 REMOTE
Q903 RED LED SW
Q904 BLUE LED SW
Q905 GREEN LED SW
Q906 SECURITY INDICATOR SW
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Q921 REMOTE SW
3 6 7 1 3 1 5

EQUALIZER UNIT

Ref. No. Application/Function
IC250 DOLBY/EQUALIZER
CD PLAYER UNIT (X32-5490-01)
Ref. No. Application/Function
MECHANISM
IC1
CONTROL IC
IC2 SW3.3V AVR
CD RF/SERVO/
IC3
DSP/DAC IC
IC4 4ch BTL DRIVER
Q2 SW 5V
AUTOMATIC POWER
Q3
CONTROL
co
Q4 SW
.
DPX-3070/3070B
9 4 2 8
Operation/Condition
Power supply for
cassette motor
8V power supply for audio
11V power supply for LED
Power supply for
cassette main motor
Operation/Condition
LCD driver
Receives remote signal
0 5 8 2 9 9 4 2 8
Operation/Condition
Cassette audio equalizer
Operation/Condition
Activates when BU5 and
MSTOP (Pin No.12) goes "H".
Activates when CNTL
(Pin No.1) goes "H".
Activates when SW3.3V
goes "H".
Focusing coil, tracking
coil, spindle motor and
sled motor driver.
Switch for SW5V.
m
LD driver.
For switching equalizer.
9 9
9 9
3