LG 50PW450 Service Manual - Page 34

Repair Process PDP TV Symptom D. General Function Problem Making Remote control & Local Key & RF emitter checking Revision 2010. 11. 16 전자 - 6-2 9/10 1. Remote controller (R/C) operating error Check R/C itself Operation Normal Y operating? N ☞A26 Check & Repair Cable connection Connector solder Check R/C Operating When turn off light in room If R/C operate, Explain the customer cause is interference from light in room. Check & Replace Battery of R/C Normal operating? N Replace R/C Close ☞A26 Normal N Check B+ 5V operating? On Main B/D ☞A26 Normal Y Check IR Voltage? Output signal Replace Main B/D Normal Y Signal? Y Close N ☞A12 Check 5V on Power B/D Replace Power B/D or Replace Main B/D (Power B/D don't have problem) N Repair/Replace IR B/D 2. Local KEY operating error Check local key Operation Normal Y operating? N ☞A27 Check & Repair Cable connection Connector solder Move Power problem Section Normal N operating? ☞A27 Check Key Output signal Replace Main B/D Normal Y Signal? Y Close N Repair/Replace Local Key B/D 9 ⓒ LG Electronics. Inc.2010