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Troubleshooting Flow Chart - ViewSonic VA2012w Service Manual

20” color tft lcd display
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6. Troubleshooting Flow Chart

No Power
ViewSonic Corporation
No Power
Check CN6 pin 1,2
12V correct?
Check U4,U3 pin2
3.3V correct?
Check U5 pin 2
1.8V correct?
Check Y1
frequency 12MHz
Change M/B
Change power
board
Change U3,U4
Change U5
Change Y1
Confidential - Do Not Copy
51
VA2012wb
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