3. Panel Power Circuit

White screen

Measure Q301 base is low level?

OK

Check CN301 is solder and Q301,Q302 is OK?

NG

X401 oscillate waveform is normal

OK NG

Check reset circuit of

U401 is normal

Replace X401

Check Correspondent

NG

 

component.

 

 

 

OK

Replace PANEL

NG

Check Correspondent

 

component.

OK

Replace U401

32

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Image 32
Acer B203W manual Panel Power Circuit, Ok Ng