Service manual

11
DC to DC block trouble shooting
Check CN12 have 12v input ?
CHECK L3 have 3.3V output & L4 have 5V output?
U9 Pin2 have 2.5V output
Replace relative component
y
es no
En
d
L3
p
in 1 = 3.3VL4
p
in 1 = 5V
U9
p
in 2 = 2.5V