ViewSonic Corporation
Confidential - Do Not Copy
VG1921wm-2
37
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,
OVP circuit
Check pin1 of IC802
voltage is below 1V
Check R811, R810,
R809, R808,R814
END
Summary of Contents for VG1921wm-2
Page 5: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 2 4 Handling and Placing Methods...
Page 6: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 3...
Page 35: ...Disassembly Procedure ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 32...
Page 36: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 33...
Page 37: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 34...
Page 38: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 35...
Page 51: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 48...
Page 61: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 58 11 PCB Layout Diagrams...
Page 62: ...ViewSonic Corporation Confidential Do Not Copy VG1921wm 2 59...
