ViewSonic Corporation
Confidential - Do Not Copy
VA702-1_VA702b-1
35
2.
No Power & Power LED Off
No power
Check primary
rectifier voltage
Check IC802,
C805, T801
Check circuit
if short
Check F801, P801,
D801
Check pin3 of
IC802 voltage
about 1V
Check R801, R805,
R822, R823, R817
Check pin2 of IC802
voltage about 2V
Check R803, R807,
R824, R825
Check pin1 of IC802
voltage is 5.8V
Check R812, R816,
C818
END
Содержание VA702-1
Страница 42: ...ViewSonic Corporation Confidential Do Not Copy VA702 1_VA702b 1 39 6 Black Screen and backlight turn on...
Страница 60: ...11 PCB Layout Diagrams Main board Top layout ViewSonic Corporation Confidential Do Not Copy VA702 1_VA702b 1 57...
Страница 61: ...Main board bottom Layout ViewSonic Corporation Confidential Do Not Copy VA702 1_VA702b 1 58...
Страница 62: ...ViewSonic Corporation Confidential Do Not Copy VA702 1_VA702b 1 59 POWER board...
Страница 63: ...ViewSonic Corporation Confidential Do Not Copy VA702 1_VA702b 1 60...