ViewSonic VP2330WB Service Manual - Page 54
U.S.B doesn't Work, Device Problem, Change Scalar M/B, Change USB M/B
UPC - 766907150919
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ViewSonic Corporation Confidential - Do Not Copy 51 VP2330wb
U.S.B doesn't Work
Check USB M/B
CN6 PIN1,2
Device Problem
Check USB M/B
U3 3.3V
Change Scalar M/B
Change USB M/B
NG
NG
NG
Change USB M/B
NG
Check USB M/B
FUSE F1~F4
Short
Check USB M/B
R20 5V
Change USB M/B
ViewSonic Corporation
Confidential - Do Not Copy
VP2330wb
51