LG 50PJ340 Training Manual - Page 112
Main Board (Back Side) Component Voltages, IC203, IC501, Q501
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50PJ350 Main Board Back Side Component Voltages IC203 Winbond Serial Pin Flash [1] 0V [2] 3.30V [3] n/c [4] n/c [5] n/c [6] n/c [7] 0V [8] 3.3V [9] 0V [10] Gnd [11] n/c [12] n/c [13] n/c [14] n/c [15] 0V [16] 0V IC301 1.8V_MST Pin Regulator [1] 0.6V [2] 1.85V (Out) [3] 3.3V (In) IC302 3.3V_VST Pin Regulator [1] Gnd [2] 3.3V (Out) [3] 5.09V (In) IC303 3.3V_MST Pin Regulator [1] Gnd [2] 3.3V (Out) [3] 5.04V (In) IC304 1.2V_DVDD Reg Pin Dig Ch Only [1] Gnd Only on [2] 1.2V (Out) with Dig [3] 3.3V (In) Channel IC501 HDCP Data Pin EEPROM [1] Gnd [2] Gnd [3] 3.3V [4] Gnd [5] 3.3V [6] 3.3V [7] 3.3V [8] 3.3V IC306 3.3V_TU Pin Regulator [1] Gnd [2] 3.3V (Out) [3] 4.97V (In) IC307 1.8V_TU Pin Regulator [1] Gnd [2] 1.8V (Out) [3] 3.3V (In) IC502 IC503, IC504 EDID Data Pin For HDMI [1] Gnd [2] Gnd [3] Gnd [4] Gnd [5] 4.52V [6] 4.52V [7] 3.33V [8] 4.53V IC602 RGB Pin EEPROM [1] Gnd [2] Gnd [3] Gnd [4] Gnd [5] 5.09V [6] 5.09V [7] 3.33V [8] 5.09V IC701 USB 5V Pin Limiter [1] 4.97V (In) [2] Gnd [3] 3.3V (Enable) [4] 0V [5] 0V [6] 4.97V (Out) IC703 RS232 Tx/Rx Pin [1] 3.3V [2] 5.45V [3] 0V [4] 0V [5] (-5.37V) [6] (-5.4V) [7] (-5.4V) [8] 0V [9] 3.3V [10] 3.3V [11] n/c [12] n/c [13] 0V [14] 5.45V [15] Gnd [16] 3.3V (B+) Q301 Driver for 5V_MST Pin Switch Q302 [B] 0.6V [C] 0V [E] Gnd Q702 RS232 Pin Tx Buffer [B] 0.6V [C] 0V [E] Gnd Q302 5V_MST Pin Switch [G] 0V [S] 5.09V [D] 5.04V D502 HDMI CEC Limite Pin [A1] 0V [A2] 3.28V [C] 3.1V Q303 3.3V_PVSB Sw Pin Dig Ch Only [G] 0V Only on [S] 3.3V with Dig [D] 3.3V Channel Q304 Driver for 3.3V_PVSB Pin Switch Q303 [B] 0.64V Only on [C] 0V with Dig [E] Gnd Channel Q501, Q503 Q504 Hot Swap Pin Switch for HDMI [B] 0V [C] 0V [E] Gnd 112