54
ViewSonic Corporation
Confidential - Do Not Copy
VA2226w-1
6.2. No Power & Power LED Off
No power
Check primary
rectifier voltage
Check IC802,
C804, T801,
Check
circuit if
Check F801, P801,
RT,801,D801
Check pin6 of
IC802 voltage
about 12V
CheckC810,D803,C80
7,
Check pin2 of IC802
voltage about 3V
Check primary OVP,
OLP and secondary
Check pin1 of IC802
voltage is below 1V
Check R811, R810,
R809, R808,R814
END
Summary of Contents for VA2226w-1
Page 5: ...2 ViewSonic Corporation Confidential Do Not Copy VA2226w 1 4 Handling and Placing Methods...
Page 6: ...3 ViewSonic Corporation Confidential Do Not Copy VA2226w 1...
Page 51: ...48 ViewSonic Corporation Confidential Do Not Copy VA2226w 1 Front Cover Back Cover...
Page 52: ...49 ViewSonic Corporation Confidential Do Not Copy VA2226w 1 Keypad Board Chassis...
Page 54: ...51 ViewSonic Corporation Confidential Do Not Copy VA2226w 1 I F Board...
Page 60: ...57 ViewSonic Corporation Confidential Do Not Copy VA2226w 1 6 5 Backlight can t be turned on...
Page 63: ...60 ViewSonic Corporation Confidential Do Not Copy VA2226w 1 6 8 Bad Screen...
Page 64: ...ViewSonic Corporation Confidential Do Not Copy VA2226w 1 7 Block Diagram 61...
Page 70: ...67 ViewSonic Corporation Confidential Do Not Copy VA2226w 1 9 PCB Layout Diagrams...
Page 71: ...68 ViewSonic Corporation Confidential Do Not Copy VA2226w 1...
Page 72: ...69 ViewSonic Corporation Confidential Do Not Copy VA2226w 1...
Page 73: ...70 ViewSonic Corporation Confidential Do Not Copy VA2226w 1...