42PQ301R-ZB (CHASSIS:PP91B) — LG TV Service Manual (repair manual). Page 70

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Making 
Revision 
2009. 2 . 1
PDP TV
Symptom
Repair Process-Reference data
Check Local switch assembly status
A28
D. General function defect
Check Local KEY assembly status
XXPQ20/30xx 
XXPQ60xx 
A28
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