ViewSonic Corporation
Confidential - Do Not Copy
VA1930wm-1
40
2.
No Power & Power LED Off
No power
Check primary
rectifier voltage
Check IC802,
C804, T801,
Check circuit
if short
Check F801, P801,
RT,801,D801
Check pin6 of IC802
voltage about 12V
CheckC810,D803,C807,
Check pin2 of IC802
voltage about 2V
Check primary OVP, OLP
and secondary feedback,
Check pin1 of IC802
voltage is below 1V
Check R811, R810,
R809, R808,R814
END
Содержание VA1930wm-1
Страница 5: ...ViewSonic Corporation Confidential Do Not Copy VA1930wm 1 2 4 Handling and Placing Methods...
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Страница 38: ...Disassembly Procedure Adjust Stand ViewSonic Corporation Confidential Do Not Copy VA1930wm 1 35...
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Страница 47: ...ViewSonic Corporation Confidential Do Not Copy VA1930wm 1 44 6 Black Screeqn and backlight turn on...
Страница 52: ...ViewSonic Corporation Confidential Do Not Copy VA1930wm 1 49 8 Exploded Diagram and Exploded Parts List...
Страница 55: ...ViewSonic Corporation Confidential Do Not Copy VA1930wm 1 52 9 Block Diagram...
Страница 63: ...ViewSonic Corporation Confidential Do Not Copy VG1930wm 1 60 11 PCB Layout Diagrams...
Страница 64: ...ViewSonic Corporation Confidential Do Not Copy VG1930wm 1 61...
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