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TROUBLESHOOTING THE 50AF1 PANEL
(2)
a
b
c
d
e
f
g
h
i
j
a
b
c
d
e
f
g
h
i
j
(4)
(3)
The vertical lines
are at the area of
"a", "e", "e", or "g"?
N
k
l
m
n
o
The vertical lines
are at the area of
"b", "d", "f", or "h"?
N
k
l
m
n
o
(5)
Y
Turn off the main power.
Replace ABUSC (D) board
Turn on PDP
Y
Normal?
N
Turn off the main power.
Replace LOGIC PWB
Turn on PDP.
Normal?
N
Turn off the main power.
Replace signal cables LOGIC – ABUSC(D).
Turn on PDP.
Normal?
Y
Turn off the main power.
Replace ABUSC (D) board
Turn on PDP
Y
Normal?
N
Turn off the main power.
Replace LOGIC PWB
Normal?
N
Turn off the main power.
Replace signal cables LOGIC – ABUSC(D).
Turn on PDP
Y
Normal?
N
44
ABUSC(D) board
is defective
Y
LOGIC PWB
defective.
Signal cable is defective
ADM is defective.
(Panel is defective.)
ADM contains (COF)
ABUSC(U) board
Y
LOGIC PWB defective
Signal cable is defective
ADM is defective.
(Panel is defective.)
ADM contains (COF)
is defective
(6)
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