LG 50PJ340 Training Manual - Page 110
Main Board Drawing (Front Side) Component Voltages, IC202, IC308
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50PJ350 Main Board Front Side Component Voltages 50PJ350 Main Board (Front Side) Component Voltages IC202 7V (to IC405) Pin Regulator [1] Gnd [2] Gnd [3] Gnd [4] Gnd [5] 3.3V [6] 3.3V [7] Gnd [8] 3.3V IC308 1.3V_VDDC Pin Regulator Use scope: [1] Do not measure Pin 1: 1.4~1.7V P/P [2] Gnd [3] 5.04V Using DVM, set shuts off. [4] 6.07V [5] 4.99V [6] 1.28V [7] 1.28V [8] 4.27V Use scope: Pin 8: 600mV P/P Using DVM, set shuts off. Q401 Tuner CVBS Pin Buffer (Analog) [B] 1.19V [E] 1.86V [C] Gnd Q402 IF_P Buffer Pin (Digital) [B] 1.18V [E] 1.18V [C] Gnd Q403 Tuner SIF Pin Buffer (Digital) [B] 1.32V [E] 1.99V [C] Gnd Q404 IF_N Buffer Pin (Digital) [B] 1.32V [E] 1.99V [C] Gnd Q502 HDMI CEC Pin Buffer [1 B] Gnd [2 S] 3.18V [3 D] 3.29V [4 G] 3.3V D1 Reset Pin Speed Up [A1] Gnd [A] 0V [A2] Gnd D2 LED-R Pin Routing [A1] 0V [C] 0.13V [A2] 0.28V D501 B+ Routing Pin to IC502 [A1] 0V [A] 4.54V [A2] 5.0V D504 B+ Routing Pin to IC504 [A1] 0V [A] 4.54V [A2] 5.0V D505 B+ Routing Pin to IC503 [A1] 0V [A] 4.54V [A2] 5.0V 110