50
ViewSonic Corporation
Confidential - Do Not Copy
VX2255wmh-4
VX2255wmb-4
Black Screen and backlight turn on
Black Screen
Check VCC
5V
Power Fail
Check VCC
3.3V
and VCC
1.8V
Check
FB103
C128~C141
Check Reset
Waveform
U104
Check C151
Check Crystal
Waveform
U104 (pin127,128)
Check
C150,C152,X1
Check CCFL
Enable
U104
Check
pin10 of
IC501
Invert fail
U104 fail
Check R147,R111,R112,
and Q106
NG
OK
OK
OK
OK
NG
OK
OK
NG
NG
NG
Check
FB102
C142~C147
NG
Содержание VX2255wmb-4
Страница 41: ...38 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4 Web camera BEZEL...
Страница 42: ...39 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4 PANEL MICROPHONE Power key board...
Страница 43: ...40 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4 LVDS CABLE KEYPOWER CABLE I F BOARD...
Страница 44: ...41 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4 CHASSIS SPEAKER P I BOARD...
Страница 45: ...42 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4...
Страница 48: ...45 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4 Interface BOARD DIAGRAM...
Страница 64: ...61 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4 9 PCB Layout Diagrams...
Страница 65: ...62 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4...
Страница 66: ...63 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4...
Страница 67: ...64 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4...
Страница 71: ...68 ViewSonic Corporation Confidential Do Not Copy VX2255wmh 4 VX2255wmb 4...