KDC-X769
4
●
SUB-CIRCUIT UNIT (X16-2080-10)
Ref. No.
Application/Function
Operation/Condition/Compatibility
IC1
E2PROM
For security
●
SUB-CIRCUIT UNIT (X16-2140-10)
Ref. No.
Application/Function
Operation/Condition/Compatibility
IC1
LCD driver
KEY Input
IC2
LCD driver
IC3
Remote control sensor
Q1
KEY scan start SW
ON when the base goes “L”.
Q5, D26
VLCD AVR
Q6
Remote control sensor power supply SW
ON when the base goes “L”.
Q11
Dimmer control
LCD back light control. OFF when the base goes “L”, ON when the base goes “H”.
●
SWITCH UNIT (X16-2190-10)
Ref. No.
Application/Function
Operation/Condition/Compatibility
Q1
DSI (Disabled System Indicator)
DSI blinks when the base goes “H/L”
Q2
KEY illumination SW (GREEN)
ON (KEY illumination green) when the base goes “H”
Q3
KEY illumination SW (RED)
ON (KEY illumination red) when the base goes “H”
●
ELECTRIC UNIT (X25-9680-10)
Ref. No.
Application/Function
Operation/Condition/Compatibility
IC1
System
µ
-com
IC2
E-vol & N.C. & MPX
IC3
Regulator IC for A8V
IC4
Power IC
IC6
-9V AVR (DC/DC IC) for 4.5V Pre-out
IC7
Reset IC
IC8
Logic IC for muting
Motor driver IC for panel mechanism
For ROM correction.
While BU is applied, BU5V AVR o5V.
When Q3’base goes Lo, SW5V o5V.
When Q5’base goes Hi, SW14V outputs 14V.
When Q6’base goes Hi, A8V AVR outputs 8.4V.
When Q602’base goes Hi, S+B AVR outputs 7.4V.
When Q11’base goes Hi, AVR outputs 10.5V.
Q15, 16
AUDIO 10.7V AVR
When Q16’base goes Hi, AVR outputs 10.7V.
Q17~19
Pre-Amp -9V AVR
Q18 and 19 works as a differential amplifier, Q17 works as a driver and -9.0V is supplied
to OP amp for Pre-out.
Q20~22
Pre-Amp +9V AVR
Q20 and 21 works as a differential amplifier, Q22 works as a driver and +9.3V is supplied
to OP amp for Pre-out.
Q23, 24
P-ANT SW
When Q23’base goes Hi, P-ANT SW outputs 14V.
Q25, 26
P-CON SW
When Q26’base goes Hi, P-CON SW outputs 14V.
COMPONENTS DESCRIPTION
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