T
ro
u
b
l
eshootin
g
4-114
S
a
m
s
u
n
g
El
e
c
troni
c
s
4-4-7
0
F
a
n IPM
O
v
er
h
eat
error
Ou
tdoor
u
nit
disp
l
a
y
(FA
N
1
P
CB
)
(FA
N2
P
CB
)
Ju
d
g
m
ent
Method
∙ I
PM
interna
l
te
m
perat
u
re
m
ore
than
8
5
°C (E4
55
, E
3
55
)
C
a
u
se
o
f
pro
b
-
l
e
m
∙ H
eat
sin
k
and
I
PM
asse
mb
ly
de
f
e
c
ti
v
e
.
∙
De
f
e
c
ti
v
e
heat
sin
k
c
oo
l
in
g
Po
w
er
O
ff
Y
es
Did
c
he
ck
the
f
orei
g
n
o
b
j
e
c
ts
b
et
w
een
the
heat
sin
k
pin
?
R
e
m
o
v
e
f
orei
g
n
o
b
j
e
c
ts
*
C
o
l
d
heat
sin
k
asse
mb
ly
de
f
e
c
t
o
cc
u
rs
.
No
Y
es
I
s
the
b
o
l
t
o
f
the
heat
sin
k
f
ully
ti
g
htened
?
T
i
g
hten
B
o
l
t
No
Y
es
Did
c
he
ck
the
f
orei
g
n
o
b
j
e
c
ts
b
et
w
een
the
heat
sin
k
and
I
PM
?
No
1
.
C
a
u
se
o
f
pro
b
l
e
m
C
o
m
p
l
ete
R
e
m
o
v
e
f
orei
g
n
o
b
j
e
c
ts
and
app
ly
the
heat
sin
k
g
rease
.
A
nd
then
reasse
mb
ly
