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2. No raster (Power LED blue, black screen)
NO RASTER
(Screen is not displayed)
1
Is 19.4V at JK700?
2
Is 1.25V at 8pin of IC704?
Is 1.8V at 2pin of IC711?
3
is 3V at 1pin of IC601?
4
Put into LVDS cable completely?
LVDS cable have damage?
5
is 12V/5V at 1pin of P102
Or 30pin of P101?
Insert the F/W back
or REPLACE LCD MODULE
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Only for training and service purposes
YES
NO
YES
NO
YES
NO
YES
NO
YES
check open or short at Line.
NO
Check Line short or open between
IC711/IC704 and IC501,
If there is any problem at Line,
Change IC711/IC704 or change IC501
It is not over 3V at 1pin of IC601.
Or check Line short or open between
R603 and 95pin of IC501.
If LVDS cable isn't insulted enough,
Insult LVDS cable until locking hook.
If LVDS cable have damage,
Change LVDS cable
If is not under 1.5V at R761,
change Q721 or check open and short
of Line among Q720 and Q721
5V : 20", 21", 22" / 12V : 24"
P101 : 20", 24" / P102 : 21", 22"
- 14 -
or change Adapter
Change Q601.
Change IC 501.
LGE Internal Use Only
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