
24
TK-863G
SEMICONDUCTOR DATA / DESCRIPTION OF COMPONENTS
Shift Register : BU4094BCFV
■
Terminal function (TX-RX unit IC510)
Pin No.
Port
Name
Function
4
Q1
W/N
Wide/Narrow SW.
Narrow : H
5
Q2
MUTE
MIC mute (M models only).
Mute : H
6
Q3
MBL
MIC/LCD backlight control.
Backlight on : H
7
Q4
LED0
Red LED.
LED lights : H
11
Q8
BSHIFT
Beat shift.
Shift on : H
12
Q7
AFREG2
Base band IC inter register select 2.
13
Q6
AFREG1
Base band IC inter register select 1.
14
Q5
LED1
Green LED.
LED lights : H
■
Terminal function (TX-RX unit IC9)
Pin No.
Port
Name
Function
4
Q1
HNC
Horn alert control.
Horn alert on : H
5
Q2
8RC
8R control.
RX : H
6
Q3
8TC
8T control.
TX : H
7
Q4
SPMUTE
Speaker mute control.
Mute on : H
11
Q8
AUX6
Auxiliary output.
12
Q7
AUX5
13
Q6
PA/LI
PA/LIGHT control.
PA/LIGHT on : H
14
Q5
RX
TX/RX VCO switch.
RX : L
DESCRIPTION OF COMPONENTS
Display Unit (X54-3270-10)
Ref. No.
Use/Function
Operation/Condition
D801
Reverse current
prevention
D802~805
Light emission
D808
Current stability
IC801
LCD driver
Q801
DC switch (LED)
TX-RX Unit (X57-6490-10)
Ref. No.
Use/Function
Operation/Condition
D1
Surge absorption
D2
Voltage reference
D3~5
Surge absorption
D8
IF switch (Wide/Narrow)
D9
DC switch
D10
IF switch (Wide/Narrow)
D11
Noise amp detect
D14
Surge absorption
D15
OR gate
SP mute, AM
D16
RF switch (TX/RX)
Heterodyne
D17
Temperature
Drive
compensation
D18
RF BPF tuning
D19
Surge absorption
D20
Reverse current
prevention
D21
Voltage reference
D23
RF BPF tuning
D24
Voltage reference
D25
Surge absorption
D26
Reverse current
prevention
D27
Reverse current
prevention
D28
RF BPF tuning
D30
ANT switch
D31
RF BPF tuning