Wells-Gardner D9300 Series service manual Wells-Gardner Electronics Corporation

Wells-Gardner Electronics Corporation

8.DESCRIPTION OF CIRCUIT OPERATION:

8-1. Mode Control.

8-1.1 H-Sync is inputted to pin 30 of IC601, V-Sync to pin 29 of IC601 for each mode and pin 27, 26

of IC601 output always positive polarity sync.

8-1.2 The outputs from IC601 are as below (See table below)

No.

Frequency

Resolution

Range of

Frequency

OUTPUT (MCU PIN)

Hf

Vf

Hf (KHz)

Vf (Hz)

(CS3)

(CS2)

(CS1)

OFF

ST-BY

SUS-P

LED

KHz

Hz

38

39

40

5

3

4

6

1

31

70

720x400

28 ~32.9

68 ~ 72

L

L

L

L

H

L

L

2

31

60

640X480

"

58 ~ 62

L

L

L

L

H

L

L

3

35

86

1024X768

33 ~ 35.9

84 ~ 88

H

L

L

L

H

L

L

4

38

75

640X480

36 ~ 40.9

73 ~ 77

H

H

L

L

H

L

L

5

38

60

800X600

36 ~ 40.9

58 ~ 62

H

H

L

L

H

L

L

6

47

75

800X600

41~ 51.9

73 ~ 77

H

L

H

L

H

L

L

7

48

72

800X600

"

70 ~ 74

H

L

H

L

H

L

L

8

48

60

1024X768

"

58 ~ 62

H

L

H

L

H

L

L

9

53

85

800X600

52 ~ 61.9

83 ~ 87

L

H

H

L

H

L

L

10

56

70

1024X768

"

68 ~ 72

L

H

H

L

H

L

L

11

60

75

1024X768

"

73 ~ 77

L

H

H

L

H

L

L

12

64

60

1280x1024

62 ~ 70

58 ~ 62

H

H

H

L

H

L

L

13

69

85

1024x768

62 ~ 70

83 ~ 87

H

H

H

L

H

L

L

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