LG FLATRON M1510A Service Manual page 20

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NO RASTER : [B] PROCESS
CHECK LED STATUS
ON DISPLAY UNIT
YES
CHECK L401, L402,
L403
YES
CHECK THE
INPUT/OUTPUT OF
U401
YES
CHECK INVERTER
CONNECTOR OR
INVERTER
YES
CHECK PANEL LINK CABLE
OR MODULE
YES
CHECK INPUT SOURCE
CABLE AND JACK
2. NO RASTER
NO
NO
NO
NO
NO
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REPEAT [A] PROCESS
CHANGE L401, L402, L403
CHANGE U401
CHANGE INVERTER
CONNECTOR OR
INVERTER
CHANGE PANEL LINK
CABLE OR MODULE