Table of Contents
Advertisement
6 CIRCUIT OPERATIONS
6.1.
CONNECTION DIAGRAM
+24V
1
+24V
2
+24V
3
GND
4
GND
5
GND
6
+5V
7
NC
8
COM
1
LATCH
2
STB1
3
GND
4
VDD
5
TH
1
CLOCK
2
GND
3
STR2
4
SI
5
COM
6
A
B
NA
MOTOR
NB
CO
SENSOR
V.LED
1
G.LED
2
CLK
3
GND
4
ST
5
CIS
GND
6
SEL
7
+5V
8
GND
9
SIG
10
CN1
CN9
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
10
CN4
1
CN10
2
1
3
2
4
3
5
4
6
5
7
DIGITAL
6
8
BOARD
7
9
8
10
9
11
10
CN3
1
2
CN7
3
1
4
2
5
3
CN5
4
1
5
2
6
7
8
9
CN8
10
1
11
2
CN6
3
1
4
2
5
3
6
4
7
5
8
6
9
10
CN102
+24V
1
D-GND
2
+5VD
3
+5VA
4
A-GND
5
BELL
6
EX-HOOK
7
RELAY
8
PAPER
ANALOG
9
BOARD
RX
10
CN202
TX
1
HOOK-IN
2
SP-MUTE
3
BREAK
4
DTMF-IMP
5
P-SHORT
6
HS-ALC
7
HS-TX
8
SP-OUT
9
HS-RX
10
CN1
NC
11
+5V
10
FG
9
OPESE
8
RS
7
E
6
KIN0
5
KIN1
4
KIN2
3
KIN3
2
KSTAR
1
CN2
KSCLK
6
KLATC
5
KTXD
4
KRXD
3
DG
2
NC
1
97
CN1
JACK
TO TEL LINE
CN2
JACK
TO EX TEL
HANDSET
CN201
SPEAKER
CN101
SP+
1
2
SP-
CN3
VSS
1
VDD
2
VO
3
RS
4
R/W
5
E
6
DB0
7
DB1
LCD
8
DB2
9
DB3
10
DB4
11
DB5
12
DB6
13
DB7
14
KX-FT21RS
Advertisement
Table of Contents
Troubleshooting
