Sony FPF55C17196UA Service Manual page 35

4.6.2 "Vertical line/Vertical bar" Problem analysis procedure
Vertical line/Vertical bar
LOGIC ~ ABUS board signal
cable has abnormal appearance?
ADM flexible has abnormal
appearance?
Turn on the power.
One vertical line？
N
N
Y
N
(1)
Y
Y
Tap lightly on ADM flexible
heat-melted junction.
Y
Any changes
phenomena?
N
Panel address has open
circuit or ADM IC chip is
(Panel chassis is defective.)
-31-
Signal cable is
defective.
ADM is defective.
(Panel chassis is
defective.)
End of analysis
Heat-melted
junction is defective
(Panel chassis is
defective.)
Turn off the
power.
defective.
End of analysis