Service manual

ViewSonic Corporation Confidential - Do Not Copy VA702-3_VA702b-3

3. Test pattern

Item

Test condition Pattern Specification Remark

1 Frequency & performance Cross-hatch pattern No noise is allow & all color is clear

Pattern 1

2 Monitor saturation 16-gray scale pattern

3~4 level need to saturated when

brightness & contrast is 100%

Pattern 2

3 RGB color performance RGB color Check the color temperature of

RGB signal color

Pattern 3,

4, 5

4 Sub-pixel defect RGB color Check the sub-pixel defect Pattern 3,

4 , 5

5 Full white Full white Check the brightness ,CR &

bright pixel defect

Pattern 6

6 Full black Full black Pattern 7

7. 5-cycle pattern 5-cycle pattern Check the BU Pattern 8

8. 1-dot pattern 1-dot pattern Check the flicker Pattern 9

Pattern 1 Pattern2

Pattern 3 Pattern4