Trou
b
l
e
shootin
g
4-104
S
a
msun
g
El
e
c
troni
c
s
Out
d
oor unit
d
ispl
a
y
(INVERTER1 PCB)
Ju
d
g
m
e
nt M
e
tho
d
∙ N-ph
a
s
e
wirin
g
e
rror
a
n
d
EMI
f
us
e
short.
∙ DC-Link Ov
e
rvolt
a
g
e
/ Low volt
a
g
e
o
cc
urs.
C
a
us
e
o
f
pro
b
l
e
m
∙ Ch
e
c
k th
e
input wirin
g
∙ EMI
f
us
e
short
c
ir
c
uit
Pow
e
r o
ff
Y
e
s
Y
e
s
22
0V is th
e
volt
a
g
e
b
e
tw
ee
n t
e
rmin
a
l
b
lo
c
ks L
a
n
d
N wir
e
?
Ch
e
c
k th
e
volt
a
g
e
b
e
tw
ee
n L
a
n
d
N wir
e
a
n
d
th
e
n r
e
st
a
rt it
R
e
pl
a
c
e
inv
e
rt
e
r PCB
a
n
d
th
e
n r
e
st
a
rt it
R
e
pl
a
c
e
f
us
e
, i
f
th
e
r
e
c
ti
f
i
e
r
d
io
de
o
f
th
e
inv
e
rt
e
r
PCB is norm
a
l.
No
No
Di
d
EMI PCB
f
us
e
b
e
c
om
e
short
c
ir
c
uit?
1. How
to
c
h
e
c
k
غ
A
M
038/048/055KXWD
✳✳
Overvoltage / Low voltage error
(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...
