LG Flatron M228WD Service Manual page 22

4. No Raster
(1) Symptom
1) No OSD and image occur at screen.
2) It maintains the condition where the front LED is blue.
(2) Procedure check
Does minute
discharge At Module?
Yes
Is the LVDC cable
normal?
Yes
Is the IC700(FLI8548)
Output normal?
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Only for training and service purposes
No
Is the VAVS on?
YES
Check the LCD Module
No
Reconnect the LVDS
cable in P800
No
Replace the VSC.
Is the Low/High output
NO
voltage normal except for
stand-by 5V?
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NO
Replace the Power
board
LGE Internal Use Only