Technical information

35
No picture (LED orange)
No picture
The button if under
control
X401oscillate
waveform is normal
Replace U402
Replace X401
Measure U703 PIN2=1.8V
U705 PIN2=3.3V
Check Corresponden
t
component
Replace U401
X402 oscillate
waveform is normal
Replace U703, U705
OK
OK
OK
OK
OK
NG
NG
NG
NG
Check reset circuit of
U402 is normal
Check HS/VS from
CN407 is normal
Replace X402
Check Corresponden
t
component
NG
NG
OK
http://www.wjel.net