KDC-MP828/W7531/W7531Y/W8531
/W8531Y/X789/X8529/X889
3
COMPONENTS DESCRIPTION
●
ELECTRIC UNIT (X34-3xxx-xx)
Ref. No.
Application / Function
Operation / Condition
IC1
DSP ANALOG POWER SUPPLY
3.3V output
IC3
DAC DIGITAL POWER SUPPLY
5.0V output
IC4
DAC ANALOG POWER SUPPLY
5.0V output
IC5
DSP DIGITAL POWER SUPPLY
3.3V output
IC10
AUDIO8V REF POWER SUPPLY
1.27V output
IC60
SWITCHING REGULATOR CONTROLLER
VFD / Mechanism digital power supply.
OUT1 : VFD (4.7V), OUT2 : Mechanism digital (5V)
IC80
FL+B
VFD power supply (57V)
IC100
RESET IC
"L" when detection voltage is 3.6V or less
IC102
SYSTEM
µ
-COM
FM/AM tuner / Changer / CD mechanism / Panel / Volume / Tone control
IC103
MUTE DRIVER
Mute control
IC104
E2PROM
Installer memory
IC200
POWER CONTROL IC
Power control switching
IC300
E-VOL & SOURCE SELECTOR
Source / Volume / Tone control
IC301,302
AUDIO BUFFER AMP
DSP input LPF
IC303
DSP
Digital signal processing
IC304
LEVEL SHIFT
Conversion from 3.3V to 5.0V
IC305
DAC
D/A Converter
IC306~308
AUDIO BUFFER AMP
DAC output LPF
IC400
RDS DECODER
IC450
PANEL MECHA MOTOR DRIVER
Analog gravity sensor
SPECTRUM ANALYZER BUFFER AMP & AGC
Spectrum analyzer buffer / Auto gain control
5V pre-out power supply
Buffer/Gained control
Front L/R and a rear L/R signal amplification
AUDIO3.3V REF SUPPLY / SVR6.8V REF SUPPLY
Supplying audio 3.3V reference voltage to E-VOL/LPF
Supplying SVR6.8V reference voltage to IC750 (POWER IC)
When Q11 base is “H”, A8V is output
When base is “H”, SW14V is output
Q20,21
B.U.5V AVR
When backup is “ON”, BU5V is output
Q22,23
SW5V
When Q23 base is “H”, SW5V is output
Q30,32
MOTOR+B AVR (PANEL MECHA)
When Q9 base is “H”, 7.5V MOTOR+B is output
Q31,33
SERVO+B AVR
When Q33 base is “H”, 8V SERVO+B is output
Q40,42,45
PANEL5V AVR
When Q42 base is “H”, PANEL5V is output
Q41,43,44
ILLUMINATION AVR
When Q43 base is “H”, 10.5V ILLUMI voltage is output
Q50~52
SW16W (SERGE PROTECTION)
When Q51 base is “H”, SW16V (13V) is output
IN1
IN2
PANEL MECHA
L
L
WAIT
L
H
OPEN
H
L
CLOSE
H
H
STOP
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