Components Description - Kenwood KDC-W8534 Service Manual

ELECTRIC UNIT (X34-3730-12/4242-7x)
Ref. No. Application / Function
IC1 DSP Analog Power Supply
IC3 DAC Digital Power Supply
IC4 DAC Analog Power Supply
IC5 DSP Digital Power Supply
IC10 Audio 8V Ref Power Supply
IC60 Switching Regulator Controller
IC80 Switching Regulator
IC100 Reset IC
System µ-com
IC102
IC103 Muting logic IC
IC104 EEPROM
IC200 Power Control IC
IC300 Eelectrical Volume & Source Selecter
IC301,302 Audio buffer AMP
IC303 DSP
IC304 Buffer IC
IC305 DAC
IC306~308 Audio buffer AMP
IC400 RDS decoder
IC450 Panel mecha motor driver
IC451 G-Analyzer
±9V AVR
IC600
IC601~603 5V Pre-out AMP
IC750 Power IC
Audio3.3V Ref Supply
IC800
SVR6.8V Ref Supply
Q10,11 Audio8V AVR
Q12 SW14V
Q20,21 B.U.5V AVR
Q22,23 SW5V
Q30,32 Moter+B AVR (Panel Mecha)
Q31,33 Servo+B AVR
Q40,42,45 Panel5V AVR

COMPONENTS DESCRIPTION

KDC-W8534/W8534Y
KDC-X790
Operation / Condition / Compatibility
Output 3.3V.
Output 5.0V.
Output 5.0V.
Output 3.3V.
Output 1.27V.
Power Supply for VFD & Mecha digital.
CH1 : VFD (4.7V)
CH2 : Mecha digital (DXM-680x : 4V , Other : 5V)
Power supply for VFD. (57V)
"L" when detection voltage goes below 3.6V or less.
Controls FM/AM tuner, the changer, CD/MD mechanism,
Panel, volume and tone.
Controls logic for muting.
For instraller's memory
Power control switch
Controls the source, volume, and tone.
Low pass filter for DSP input.
Digital signal processer.
It changes into 3.3V from 5.0V.
Digital to Analog converter.
Low pass filter for DAC output.
Panel mecha control
IN1 IN2 Panel mecha
L L WAIT
L H OPEN
H L CLOSE
H H STOP
Analog gravity sensor.
Power supply for 5V Pre Out OP-AMP.
Output buffer and gain control.
Amplifies the front L/R and the rear L/R to 50W maximum.
Audio 3.3V Ref supply to electrical volume and all low pass filters.
SVR6.8V Ref supply to power IC.
When Q11' 2in goes Hi, A8V AVR outputs 8.0V.
When Q12' 2pin goes Hi, SW14V outputs 14V.
While BU is applied, BU5V AVR outputs +5V.
When Q23' base goes Hi, SW5V outputs +5V.
When Q9' base goes Hi, Moter+B AVR outputs 7.5V.
When Q33' base goes Hi, Servo+B AVR outputs 8.5V.
When Q42' 2pin goes Hi, anel5V AVR outputs 5V.
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