Chec
k
i
f
the po
w
er cord
connect
w
ell?
Po
w
er on
a
nd chec
k
i
f
5
V
st
a
ndby on the
Po
w
er bo
a
rd exists ?
Chec
k
i
f
there is hi
g
h
level (
2
.5
V
-5.0
V
)
a
t
Pin5 in CN101.
No
No
Yes
Yes
Repl
a
ce U1
Ho
w
to
k
no
w
w
hether the Po
w
er bo
a
rd is bro
k
en?
S
till h
a
vin
g
proble
m
s
Chec
k
i
f
M
a
in bo
a
rd / L
V
D
S
w
ire / P
a
nel
a
re
in
g
ood condition ?
No
Reconnect the po
w
er cord
w
ith
the outlet to Po
w
er bo
a
rd.
Yes
No
Chec
k
i
f
the bre
ak
in the po
w
er
circuit
Repl
a
ce the Po
w
er bo
a
rd.
- 45 -
Chec
k
i
f
there is 5
V
a
t pin
7
/pin8,
a
nd 1
2V
a
t
Pin1
2
/pin13 in CN101.
