LG 50PJ340 Training Manual - Page 38
Power Supply Turn On Sequence, 50PJ350 POWER SUPPLY START UP SEQUENCE
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50PJ350 POWER SUPPLY START UP SEQUENCE F302 In Stand-By Primary side is 1.5V In Run (Relay On) Primary side is 388V F801 POWER SUPPLY 7 AC In Stand-By 0.9V Run 388V (SMPS) 1 Stand AC By 5V Reg Det STBY RUN +5V 9 Regulator 5 17V 3.46V 5.14V Reg 8 M5V M5V Reg Vs Vs Reg Va Va 9 7 Reg 8 Vs 9 AC Stand By Error Det. Det. 5V 5V 17V 6 2 If missing set shuts off in 10 Sec. 6 6 RL On Not Used 5 6 M_On 7 AC Det. If missing, set will not turn on. Error Det. 3.3V Reg IC302 3.3VST 5 17V Audio IC801 +5V HDMI EDID And other circuits 2 Reset C108, D1, 3 R62 6 Error Relay Det. On Microprocessor IC1 M_On 7 4 At point 3 TV is in Stand-By state. It is Energy Star Compliant. Less than 1 Watt MAIN Board Power On Va Vs M5V Vs Vs 89 79 9 CONTROL Y-SUS Va 5VFG 16V Z-SUS 16V / M5V 7 M5V 3.3V 8 8 7 7 7 7 5V Floating 16V / M5V Gnd 8 Y DRIVE Upper 8 Y DRIVE Lower 8 3.3V_ST X PWB Left 3.3V 3.3V 7 X PWB 8 Center Va 3.3V 7 8 Va 7 X PWB Right 2 Front IR 4 Board Soft Touch Key Pad Remote Power Key Power Key 38 July 2010 50PJ350 Plasma