Samsung Electronics
53
4-5 Troubleshooting by symptoms
4-5-1 Communication error after finishing tracking
(
E202
)
1
.
Check items
1) Is the communication cable short/open?
2) Is there a response from the Control kit PCB?
2
.
Check procedure
No
Y
es
I
s
there
a
response
from
the
$POUSPM
kit
PCB?
(LE
D90
1 (
ORN)
in
NO
T
b
l
inking)
No
Y
es
I
n
this
case
,
is
the
v
o
l
tage
wa
v
efor
m
between
the
l
ines
sq
u
are
wa
v
e
with
amp
l
it
u
de
o
v
er
±
0
.
7V
as
shown
in
the
fo
ll
owing
pict
u
re?
+
0
.
7V
-
0
.
7V
Good
Bad
Check
the
comm
u
nication
cab
l
e
and
exchange
the
$POUSPM
kit
PCB
Remo
v
e
the
comm
u
nication
cab
l
e
connecting
the
o
u
tdoor
u
nit
to
indoor
u
nit
,
and
meas
u
re
the
signa
l
on
LI
N
E
2
of
the
o
u
tdoor
u
nit
with
a
scope
Reconnect
the
cab
l
e
connecting
the
o
u
tdoor
u
nit
to
the
indoor
u
nit
and
restart
the
u
nit
.
I
f
the
comm
u
nication
sti
ll
doesn
’
t
work
,
d
n
a
B
C
P
t
i
k
.
m
m
o
c
e
h
t
e
c
a
l
p
e
r
Check
the
comm
u
nication
B
C
P
h
c
a
e
n
i
e
l
b
a
c
and
rep
l
ace
the
PCB
Y
es
I
s
the
power/comm
u
nication
cab
l
e
connected
correct
l
y?
No
Connect
the
power/comm
u
nication
cab
l
e
correct
l
y
.
o
u
tdoor
u
nit
PCB
in
order
of
mention
.
cf
.
)
I
f
there
is
no
osci
ll
o
scope
,
it
can
be
rep
l
aced
m
ul
timeter
instead
of
osi
ll
o
scope
.
RC160MHXGA_SM_E_34513A(1)_4.indd 53