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LG 42PT85-ZB Service Manual page 18

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4. No Raster
(1) Symptom
1) No OSD and image occur at screen.
2) It maintains the condition where the front LED is green.
(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 PDP Module
No
Reconnect the LVDS
cable in P1901
No
Replace the VSC.
NO
Is the Low/High output
voltage normal except for
stand-by 5V?
- 18 -
NO
Replace the Power
board
LGE Internal Use Only

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