LG 42LB1DRA Service Manual - Page 48
Check MC33078IC1001 in/outputs & Power
UPC - 719192169753
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Page 48 highlights
• AV/Component/RGB NO Sound - 48 - 1 Check Video/Front Video Audi o Input Cable Check C XA2069 (IC101) in /outpu ts 2 #2(V_L), #4(V_R), #23(FV_L), #25(FV_R), #52(AV_L_OUT), #54(AV_R_OUT) 3 Check M SP4450K (IC202) inputs #56(AV_L), #57(AV_R) 4 Check M SP4450K (IC202) outpu ts #36(SC1_R), #37(SC1_L) 5 Check C onnecto r P103(#16,#18) 6 Check M C33078(IC1001) in/outpu ts & Power #8(9V), #2, 6(in pu t), #1, 7(output) Check C S5331(IC1000) in/outputs & Power 7 #7(5V), #5,8(L/R input), #1(LRCH), #2(SCK), #3(LRCK), # 4(MCLK) 8 Check LG DT1102F(IC402) inputs R413(LRCH), R414(LRCK), R415(SCK) Check Com pon ent 1,2 / RGB Audio Input Cable Check M SP4450K (IC202) inputs #53(COMP1_L), #54(COMP1_R), #50(COMP2_L), #51(COMP2_R), #47(RGB_L), #48(RGB_R) 9 Fol lo w the pr ocedur e of " COMMON SOUND OUT"