Sony FPF55C17196UA Service Manual page 37

(2)
Vertical line of
different color
does appear?
Exists on half
N
upside?
(3)
Y
Y
N
Turn off the power.
Replace ABUSU board
(Backup part).
Turn on the main power.
Turn off the power.
Replace LOGIC board (Backup part)
Turn on the power.
Turn off the power.
Replace signal cable between
LOGIC and ABUSU.
Turn on the power.
(4)
Y
Normal?
N
Y
Normal?
N
Y
Normal?
N
-33-
ABUSU board is
defective.
LOGIC board is
defective.
Signal cable is
defective.
ADM is defective.
(Panel chassis is
defective.)
Turn off the power.
End of analysis