IC404

 

 

 

 

PIN

TX UNMODE

RX MODE

 

 

 

 

1

1.9

VOICE

2

1.9

VOICE

3

1.9

VOICE

4

5

5

 

5

1.9

VOICE

6

1.9

VOICE

7

1.9

VOICE

8

1.9

VOICE

9

1.9

VOICE

10

1.9

VOICE

11

GND

GND

12

1.9

VOICE

13

1.9

VOICE

14

1.9

VOICE

 

IC405

 

 

PIN

TX

RX

1

1.93

2.00

2

1.93

2.00

3

1.8

2.00

4

0

0

 

5

1.92

2.00

6

1.92

2.00

7

1.92

2.10

8

5.00

5.00

 

IC406

 

 

PIN

TX

RX

1

 

AF

2

1.9

1.9

3

1.9

1.9

4

5

1.9

5

1.9

1.9

6

1.9

1.9

7

1.9

1.9

8

 

1.9

9

 

1.9

10

1.9

1.9

11

GND

GND

12

1.9

1.9

13

1.9

1.9

14

1.9

1.9

MAXON SM-2000 MOBILE

VOLTAGE CHARTS (SM-2450/UHF)

 

 

IC407

 

PIN

NORMAL

OPTION

 

1

1.9

XT2

 

2

0

XT2

 

3

0

XT2

 

4

3

XT2

 

5

2

1.9

 

6

5

5

 

7

1.9

1.9

 

8

0

XT2

 

9

5

CLK

 

10

GND

GND

 

11

5

CLK

 

12

0

0

 

13

2

1.9

 

14

2

1.9

 

 

 

IC410

 

PIN

BUSY

RX

 

1

AUDIO

1.9

 

2

AUDIO

1.9

 

3

AUDIO

1.9

 

4

5

5

 

5

AUDIO

1.9

 

6

AUDIO

1.9

 

7

AUDIO

1.9

 

8

AUDIO

1.9

 

9

AUDIO

1.9

 

10

AUDIO

1.9

 

11

GND

GND

 

12

AUDIO

1.9

 

13

AUDIO

1.9

 

14

AUDIO

1.9

 

 

 

 

 

 

IC107

IC105 IC402

 

PIN

1

2

3

IC107

13.2

0

8

IC105/402

5

0

8

Page-55-

December 98

Page 59
Image 59
Maxon Telecom SM-2000 service manual IC404