KDC-W808/X689
4
COMPONENTS DESCRIPTION
●
ELECTRIC UNIT (X34-3890-11/2-70)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC10
Audio8V Ref Power Supply
Output 1.27V.
Power Supply for VFD & Mecha digital.
IC60
Switching Regulator Controller
CH1 : FDC (4.7V)
CH2 : Mecha digital (5V)
IC80
Switching Regulator
Power supply for VFD Driver. (55V)
IC100
Reset IC
“L” when detection voltage goes below 3.6V or less.
IC101
System
µ
-com
Controls FM/AM tuner, the changer, CD/MD mechanism, Panel,
volume and tone.
IC103
Muting logic IC
Controls logic for muting.
IC104
E2PROM
For instraller's memory
IC300
Eelectrical Volume & Source Selector
Controls the source, volume, and tone.
IC400
RDS decoder
Panel (MASK) mecha control
IC450
Panel (MASK) mecha motor driver
IC500
Spectrum analyzer Buffer AMP & AGC
It is buffer and auto gain control for spectrum analyzer.
IC600
±
9V AVR
Power supply for 5V Pre Out OP-AMP.
IC601~603
5V Pre-out AMP
Output buffer and gain control.
IC750
Power IC
Amplifies the front L/R and the rear L/R to 50W maximum.
Q10,11
Audio8V AVR
When Q11’ 2in goes Hi, A8V AVR outputs 8.0V.
Q12
SW14V
When Q12’ 2pin goes Hi, SW14V outputs 14V.
Q20,21
B.U.5V AVR
While BU is applied, BU5V AVR o5V.
Q22,23
SW5V
When Q23’ base goes Hi, SW5V o5V.
Q31,33
Moter+B, Servo+B AVR (Panel Mecha)
When Q33’ base goes Hi, Servo+B AVR outputs 8.5V.
Q34,40
Panel5V AVR
When Q42’ 2pin goes Hi, Panel5V AVR outputs 5V.
Q50~52
SW16V (Surge Protection)
When Q51’ 2pin goes Hi, SW16V outputs 13V.
Q60
FDC AVR SW
When base goes Hi, VFD AVR off.
Q61
Switching Regulator frequency control SW (IC60)
Q62
Mecha digital AVR SW
When base goes Hi, Mecha digital AVR off.
Q63
FDC AVR Switching Power Driver
This FET is governed by IC60.
Frequency is decided at Q61.
Q64
Mecha digital AVR Power Driver
This FET is governed by IC60.
Frequency is fixed 400kHz.
Q80, 81
AVR SW for IC80
When Q81’ base goes Hi, VFD (55V) AVR outputs 55V.
Q91
Panel 5V Discharge SW
When Q91’ base goes Hi, Panel5V is discharged.
Q100, 101
Panel Detect SW
When Q100’ base goes Lo, panel is detected.
Q200, 201
Pre-out mute driver
When a base gose Lo, mute driver is turned on.
Q202
Acc Detect SW
When Q202' base gose Hi, Acc voltage is detected.
Q203, 204
Surge Detect SW
When Q204’ base goes Hi, IC750 is changed into a standby state.
Q205
B.U Detected SW
When Q35’ base gose Hi, B.U voltage is detected.
Panel Mecha
WAIT
OPEN
CLOSE
STOP
IN1
L
L
H
H
IN2
L
H
L
H
1pin
2pin
L
H
L
400kHz
650kHz
H
600kHz
850kHz