T
roub
l
eshooting
Sa
m
sung
El
ectronics
4-
63
IPM breakdown diagnostics (FAN PCB)
1
.
P
reparations
before
chec
k
ing
1) P
o
w
er
Off
2
)
I
P
M
fai
l
ure
,
discharge
m
ode
m
a
y
not
w
or
k
proper
ly
.
T
herefore
, w
ait
m
ore
than
1
5
m
inutes
after
the
P
o
w
er
Off.
3
) R
e
m
o
v
e
a
ll
of
the
Fan
P
CB
connectors.
((
FAN
m
otor
connector
inc
l
uded.
)
4) P
repare
the
digita
l m
u
l
ti
tester.
2.
Inspection
Method
1) R
efer
to
Figure
1
and
T
ab
l
e
1,
respecti
v
e
ly
the
resistance
v
a
l
ue
and
diode
v
o
l
tage
v
a
l
ue
m
easure.
2
)
According
to
the
criterion
in
T
ab
l
e
1
to
deter
m
ine
w
hether
the
fai
l
ure
of
I
P
M.
Di
v
ision
Measured
P
oint
Criterion
R
e
m
ar
k
+
-
Measure
the
resistance
v
a
l
ues
4
0
U
More
than
500
Ꮒ
Measure
m
ent
error
can
occur
for
reasons
such
as
the
initia
l
m
easure
m
ent
condenser
discharge.
Measured
o
v
er
at
l
east
three
ti
m
es.
4
0
V
4
0
W
U
3
4
V
3
4
W
3
4
Measure
the
diode
v
o
l
tage
v
a
l
ues
U
4
0
0.3
~
0.7V
V
4
0
W
4
0
3
4
U
3
4
V
3
4 W
< T
ab
l
e
1 >
)$1 3&%
<
Figure
1 >
Fan
P
CB
Summary of Contents for AM080*XV Series
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Page 208: ...PCB Diagram and Parts List 5 4 Samsung Electronics 5 2 ASS YPCBMAIN HUB AC...
Page 210: ...PCB Diagram and Parts List 5 6 Samsung Electronics ASS YPCBMAIN HUB cont DC...
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Page 218: ...PCB Diagram and Parts List 5 14 Samsung Electronics ASS YPCBFAN cont Model 2 FAN chassis...
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