6 CIRCUIT OPERATIONS

6.1.CONNECTION DIAGRAM

KX-FT21RS

 

 

+24V

CN1

SUPPLYPOWER BOAD

1

1

+24V

2

2

 

 

+24V

 

3

3

 

GND

 

4

4

 

GND

 

5

5

 

GND

 

6

6

 

+5V

 

7

7

 

NC

 

8

8

 

 

 

 

COM

CN4

 

1

1

 

LATCH

 

2

2

 

STB1

 

3

3

 

GND

HEAD

4

4

VDD

 

 

5

5

 

TH

THERMAL

4

6

 

9

 

1

CLOCK

7

 

2

GND

8

 

3

 

STR2

 

 

 

 

5

SI

10

 

COM

 

6

11

 

 

 

 

A

CN3

 

 

1

 

 

B

 

 

2

MOTOR

NA

3

 

 

NB

4

 

 

CO

 

 

5

 

 

 

 

 

 

CN5

SENSOR

 

1

 

2

 

 

 

 

 

V.LED

CN8

1

 

1

 

G.LED

2

 

2

 

CLK

3

 

3

 

GND

4

 

4

 

ST

5

 

5

 

GND

CIS 6

 

6

7

 

SEL

7

 

+5V

8

 

8

 

GND

9

 

9

 

SIG

10

 

10

 

 

DIGITAL BOARD

CN9

1

2

3

4

5

6

7

8

9

10

CN10

1

2

3

4

5

6

7

8

9

10

CN7

1

2

3

4

5

6

7

8

9

10

11

CN6

1

2

3

4

5

6

+24V

D-GND

+5VD

+5VA A-GND BELL EX-HOOK RELAY PAPER RX

TX

HOOK-IN

SP-MUTE

BREAK

DTMF-IMP

P-SHORT

HS-ALC

HS-TX

SP-OUT

HS-RX

NC +5V FG OPESE RS

E

KIN0

KIN1

KIN2

KIN3

KSTAR

KSCLK

KLATC

KTXD

KRXD

DG

NC

CN102

1

2

3

4

5

6

7

8

9

10

CN202

1

2

3

4

5

6

7

8

9

10

CN1

11

10

9

8

7

6

5

4

3

2

1

CN2

6

5

4

3

2

1

CN1 JACK

CN2 JACK

ANALOG

BOARD

CN201

CN101

1

2

CN3

 

1

 

2

 

3

 

4

 

5

 

6

 

7

OPERATION

8

PANEL

 

9

10

11

12

13

14

TO TEL LINE

TO EX TEL

HANDSET

SPEAKER SP+

SP-

VSS

VDD

VO

RS

R/W

E

DB0

DB1 LCD DB2

DB3

DB4

DB5

DB6

DB7

97