Daewoo DPP-42A1LASB Service Manual page 47

Trouble Shooting
1 No Signal or No Raster
Check Start
Does "No Signal"
screen appear?
Y
Is the signal input Jack
properly connected?
Y
Does input source (AV
device) work?
Y
Is input selection in
the correct mode?
Y
Replace Main B/D
and/or Sub B/D
Done
N
N
Check the connection of
Jack (PDP and AV device)
N
Check AV device
N
Correct the input mode
N
Is a weak discharge
detected in the screen?
Y
N
Is LVDS connection
correctly connected?
Y
N
Check other connections
in all Boards. Are they OK?
Y
Replace Main B/D
and/or Sub B/D
-46-
Check AC connection
Check CN805, CN806
connectors
Check Power S/W ON
Check LVDS connection
between Digital B/D and
Main B/D
Connect correctly