Philips 220E1SB/00 - Page 40

40
Meridian 1
(2). No Picture
No picture
The button if under control
Replace U401
Replace X401
Measure U703 PIN2=3.3V
Check Correspondent
component
X401 oscillate waveform is normal
Check C706, C707 and U703
OK
OK
OK
OK
OK
NG
NG
NG
NG
Check reset circuit of
U401 is normal
Check HS VS from CN101 is normal
Replace X401
Check Correspondent
component
NG
NG
OK
Replace U401
X401 oscillate
waveform is normal