IF
co
n
Se
cti
on
F
lo
w
C
ha
rt(2
/2
)
Ch
ec
k
of
IF
co
n
res
et
in
pu
t p
or
t
Is
th
e
vo
lta
ge
o
f
IC1
20
3
"H"(3.
3V
)?
N
o
Is
the
re
a
pr
ob
le
m
wi
th
th
e
mo
un
tin
g
co
nd
itio
n
of
R1
21
2,
C1
22
1
or
R1
208
?
Ye
s
Y
es
Pc
on
t o
utp
ut
po
rt
ch
ec
k
Che
ck
o
f eac
h
po
we
r s
up
pl
y
co
nt
ro
l po
rt
wh
en
th
e
po
we
r i
s
O
N
* C
or
re
spo
nd
in
g
ou
tp
ut
IC12
03
p
in
15
P
C
O
N
T1
IC1
20
3
pi
n
17
PC
O
N
T2
IC12
03
p
in
21
P
C
O
N
T3
IC12
03
p
in
23
P
C
O
N
T_
C
O
R
E
IC120
3
pi
n2
4
AT
A_P
CO
NT
1
SW
3.
3V
an
d
SAT
A_
1.
2V
A
o
ut
pu
t
C
O
R
E_
1.
1V
o
ut
pu
t
DDR2
_1
.8
V
sy
st
em
ou
tp
ut
D
C
SW
5V
FE_
SW
5V
N
o
C
he
ck
fo
r s
ho
rts
a
t ea
ch
p
or
t
N
o
Al
l t
he
po
rts
go
"H
" w
ith
in
2
to
1
0
ms
, b
ut
so
on
g
o
"L
"
N
o
D
o
th
e
sy
mp
to
ms
impr
ov
e
af
te
r che
ck
in
g
th
e
so
ld
er
in
g
an
d
pa
tte
rn
o
f
IC
12
03
?
N
o
Po
w
er
s
up
pl
y
ou
tp
ut
ch
ec
k
C
he
ck
th
e
ou
tp
ut
o
f t
he
c
or
re
sp
on
di
ng
vo
lta
ge
SW
3.
3V
Sh
or
t c
irc
ui
t o
pe
ra
tio
n
ch
ec
k
N
o
To
P
ow
er
Supp
ly
(S
ys
te
m)
fl
ow
cha
rt
N
o
W
he
n
IC1
20
3
pi
n1
5
PC
O
N
T1
ha
s
gon
e
"H
",
is
th
e
SW
3.
3V
v
ol
ta
ge
o
ut
pu
t?
Ye
s
R
ep
la
ce
IC
12
03
or
re
pl
ac
e
th
e
M
B
boa
rd
Y
es
Ch
ec
k
SY
S
RS
T
si
gn
al
o
ut
pu
t
Is
IC
12
03
p
in
51
"H"(3.
3V
)?
Th
e
m
ou
nt
in
g
co
nd
itio
n
of
R
11
56
are OK?
N
o
R
ep
la
ce
IC
12
03
a
nd
th
e
M
B
bo
ar
d
Y
es
Ch
ec
k
th
e
co
m
m
un
ic
ati
on
w
ith
th
e
ho
st
CP
U
(SY
SC
O
N_R
EQ
s
ig
na
l c
hec
k)
Do
c
yc
lica
l "
H"
an
d
"L"
c
omm
un
ica
tion
wa
ve
fo
rms
come
to
IC
12
03
p
in
30
?
N
o
Is
the
re
a
pr
ob
le
m
wi
th
th
e
mo
un
tin
g
co
nd
ito
n
of
R
12
62
?
N
o
D
o
th
e
sy
mp
to
ms
impr
ov
e
af
te
r re
pl
ac
in
g
IC
10
1?
N
o
Y
es
Ch
ec
k
th
e
co
m
m
un
ic
ati
on
w
ith
th
e
ho
st
CP
U
(Se
ria
l c
om
m
un
ic
ati
on
s
ig
na
l c
he
ck
)
Do
c
yc
lica
l "
H"
an
d
"L"
c
omm
un
ica
tion
wa
ve
fo
rms
come
to
IC
12
03
p
in
47
, p
in
4
8
a
nd
p
in
49
?
N
o
Is
ther
e
a
pro
bl
em
w
ith
th
e
mou
nt
in
g
co
nd
ito
n
of
R
B1
24
0,
R1
24
3
an
d
R1
24
6
N
o
R
ep
la
ce
IC
12
03
o
r r
ep
la
ce
th
e
M
B
bo
ar
d
Is
th
e
vo
ltag
e
at
th
e
"H
" l
ev
el
(3
.3
V)
?
SW
3.
3V
an
d
SW
5V
1.
2V
A
an
d
C
O
R
E_
1.
1V
DA
C3.
3V
, 3.
3V
A
D
C
DC6V, DCDC4V
FE_
SW
12
V nad FE_SW5V
A
B
9-5
IC120
3
pi
n2
AT
A_P
CO
NT
2
Y
es
Ye
s
Ye
s
Ye
s
Replac
e I
C1203
or
replace
MB
board
BDP-BX58/S480/S483/S580