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