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No AV audio
Check if signal of H18
pin 2,4,13,15 is normal
Yes
Check if signal of U22
pin 55,56,59,60 is normal
Yes
Check if signal of
U6 pin 1,7 is normal
Yes
Check if signal of U31
pin 1,2,14,15 is normal
Yes
Replace Speaker
No PC/HDMI audio
Check if signal of U22
pin 57,58,61,61 is normal
Yes
Check if signal of
U6 pin 1,7 is normal
Yes
Check if signal of U31
pin 1,2,14,15 is normal
Yes
Replace Speaker
ViewSonic Corporation
No
Replace connection
No
Replace U22
No
Replace U6
No
Replace U31
No
Replace U22
No
Replace U6
No
Replace U31
40
Confidential - Do Not Copy
N2201w-1M
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