42LD320H (CHASSIS:LD91X) - LG TV Service Manual (repair manual). Page 70

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Making 
전자 - 6-2
Revision 
LCD TV
Symptom
Clock display Problem
Check the clock cable
Check the “Clock Display” item
on SVC Menu
YES
NO
Replace it
NO
- Replace the “Clock display” item 
from No to Yes    .
-
Select “ Clock Source”
& “Programme”
Re-solder or replace the defect part.
Replace the front clock assy
Check  I2C line & output
of IC901 ,902
Check the front clock assy
Replace MAIN B’D IC 100
NO
NO
YES
YES
YES
- Setting that use TTX information & DTV clock information
2010. 07 .27
22~42LD320H
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