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NOT USE
C3
NC
R8
NC
NC
Q4
0V/3.3V/5V
TO:DIGITAL BOARD
CN1
[0]
KSTART
1
KIN3
2
KIN2
3
KIN1
4
KIN0
5
E
6
RS
7
+5V
OPESEL
8
+5V
9
5V
0V
CN2
MICIN
1
AG
2
NC
3
DG
4
KRXD
5
KTXD
6
KLATCH
7
KSCLK
8
5V
0V
5V
0V
+5V
TO MIC
R9
C4
RED
NC
NC
BLACK
5V
+5V
0V
+5V
NOT USE
Q3
+5V
Q6
NC
R32
NC
Q5
3
1
3
1
4
2
4
2
Q1
Q2
PAPER
PAPER
SENSOR1
SENSOR2
+5V
IC1
1
16
4
VDD
2
15
6
2
3
14
COM
1
4
13
7
0
5
12
5
3
6
11
TNH
A
7
10
VEE
B
8
9
VSS
C
NC
+5V
+5V
NC
SW1
SW8
SW16
SW24
NO USE
2
3
1
NC
SW2
SW9
SW17
SW25
5
NO USE
6
4
NC
SW3
SW10
SW18
SW26
NO USE
8
9
7
NC
SW4
SW11
SW19
SW27
[3]
NO USE
0
#
*
NC
SW5
SW12
SW20
SW28
NO USE
REDIAL/PAUSE
MUTE
FLASH
SW6
SW13
SW21
SW29
MONITOR
(
)
(
)
MENU
SW14
SW22
SW30
(
)
(
)
HELP
SW7
SW15
SW23
SW31
RECEIVE MODE
COPY
STOP
FAX/START
OPERATION BOARD SCHEMATIC DIAGRAM
KX-FT71LA-B
+5V
LCD MODULE
C6
Z0.22u
CN3
1 VSS
2 VDD
3 V0
4 RS
5 R/W
6 E
7 DB0
8 DB1
9 DB2
10 DB3
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