Trou
b
l
e
shootin
g
4-
2
4
Sa
msun
g
El
ec
troni
c
s
Out
d
oor unit
d
ispl
a
y
M
a
in PCB h
a
s no pow
e
r ph
e
nom
e
non (7-s
eg
d
o
e
s not
b
link)
Ju
dg
m
e
nt M
e
tho
d
Hu
b
PCB pow
e
r
a
n
d
c
onn
ec
tion wir
e
to
de
t
ec
t.
Conn
ec
tor
c
h
ec
k
M
e
tho
d
CN96 on HUB PCB
- 1pin to 4pin : DC 1
2
V
- 9pin to 4pin : DC 5V
C
a
us
e
o
f
pro
b
l
e
m
∙ HUB PCB
c
onn
ec
tor wir
e
defec
ts
a
n
d
th
e
c
onn
ec
tion is not.
∙ M
a
in PCB
defec
tiv
e
.
∙ Hu
b
PCB
defec
tiv
e
.
∙ Hi
g
h pr
e
ssur
e
swit
c
h op
e
r
a
tion
∙ W
a
t
e
r hu
b
PCB
defec
tiv
e
.
1. How
to
c
h
ec
k
R
e
pl
ace
th
e
MAIN PCB.
Ch
ec
k th
e
r
ef
ri
ge
r
a
nt ov
e
r
c
h
a
r
ge
.
R
e
pl
ace
i
f
th
e
r
e
is no
ab
norm
a
lity.
R
e
pl
ace
th
e
EMI PCB
No
No
Y
e
s
Y
e
s
Y
e
s
Di
d
th
e
hi
g
h pr
e
ssur
e
swit
c
h
bec
om
e
short-
c
ir
c
uit?
Di
d
th
e
f
irst EMI PCB Fus
e
bec
om
e
short-
c
ir
c
uit?
Ch
ec
k th
e
r
a
t
ed
input volt
age
r
a
n
ge
on m
a
in t
e
rmin
a
l
b
lo
c
k. (R/
S
/T/N)
No
Y
e
s
Is th
e
r
a
t
ed
volt
age
o
f
CN70(1pin to
3
pin)
c
onn
ec
tor o
f
th
e
HUB PCB is suppli
ed
to within ± 10%?
Ch
ec
k th
e
r
a
t
ed
input volt
age
r
a
n
ge
on m
a
in t
e
rmin
a
l
b
lo
c
k. (R/
S
/T/N)
Conn
ec
t th
e
c
ommuni
ca
tion wir
e
to th
e
CN96
c
onn
ec
tor on th
e
HUB PCB.
No
No
Y
e
s
Y
e
s
Is th
e
HUB PCB LED li
g
ht
ed
up?
Is th
e
c
ommuni
ca
tion wir
e
o
f
MAIN/HUB
c
onn
ec
t
ed
?
Pow
e
r On
Main PCB has no power phenomenon
(cont.)
Summary of Contents for AM072FXVAFH series
Page 219: ...5 6 Samsung Electronics 5 2 ASS YPCBMAIN HUB AC 1 2 3 4 5 6 7 8 9 10 11 12...
Page 223: ...5 10 Samsung Electronics 4 2 3 5 8 9 7 1 6 5 3 ASSY PCB INVERTER...
Page 225: ...5 12 Samsung Electronics ASS Y PCB INVERTER cont 4 8 10 9 7 6 11 12 13 1 2 3 5...
Page 229: ...5 16 Samsung Electronics 5 5 ASS YPCBFAN Model 1 FANchassis 1 5 2 6 3 4...
Page 231: ...5 18 Samsung Electronics ASS YPCBFAN cont Model 2 FAN chassis 1 7 2 8 3 4 5 9 6...
Page 260: ...Samsung Electronics 7 15 7 19 AM038KXWD66 7 20 AM048 055KXWD66...