4
KDC-W4031/W4031Y/W409/W409Y
KDC-W431GY/W4531/W4531Y/WF431A
Ref. No.
Application / Function
Operation / Condition
IC8
SELECTOR (SERIAL DATA)
Serial audio data switch.
IC9
DAC 3.3V AVR
3.3V power supply for IC2.
Q1
LEVEL SHIFT
3.3V to 5.0V.
Q3~7
LEVEL SHIFT
3.3V to 5.0V.
Q8
AUTOMATIC POWER CONTROL
LD driver.
Q9,10
SWITCH
Switch for anticipation sub-beam delay.
●
SWITCH UNIT (X16-2932-7x)
Ref. No.
Application / Function
Operation / Condition
IC1
VFD DRIVER
IC3
REMOTE SENSOR
Q1
GREEN LED SW
“ON” when the base goes “H”.
Q2
RED LED SW
“ON” when the base goes “H”.
Q21
PAN SW5V
“ON” when the base goes “H”.
COMPONENTS DESCRIPTION
MICROCOMPUTER’S TERMINAL DESCRIPTION
●
SYSTEM
µ
-COM : IC1 on X34- (ELECTRIC UNIT)
Pin No.
Active
Pin Name
I/O
Application
Processing Operation
(H/L)
1
DC ERR
I
DC offset detection input
2
LINE MUTE
I
Phone detection
NAVI MUTE : Over 2.5V, TEL MUTE : Below 1V
3
ROTARY CW
I
Rotary encoder input
4
AVSS
-
5
TUN TYPE1
I
E-VOL setting switch
Refer to “TUN TYPE” on the TRUTH TABLE
6
TUN TYPE2
I
E-VOL setting switch
Refer to “TUN TYPE” on the TRUTH TABLE
7
AVREF1
-
8
VFD DATAF
I
Data input from VFD driver
9
VFD DATAS
O
Data output to VFD driver
10
VFD CLK
O
Clock output to VFD driver
