Sony S75F Service Manual page 42

White screen
Check Correspondent
component
White screen
Measure Q502 base
is high level?
OK
NG
Check Q502 and Q501 are
broken or CN501 solder?
NG
OK
Replace PANEL
Measure U602 PIN2=3.3V
C609 (+) =1.8V
OK
X301 oscillate
waveform is normal
OK
Replace U301
42
S75F Sony
Check Correspondent
NG
component
NG
Check Correspondent
component