Switch Mode Power Supply Overview - LG 50PV450 Manual

Switch Mode Power Supply Overview

Switch Mode Power Supply Overview
Y-SUS Board
Main Board
Adjustments
The Switch Mode Power Supply Board Outputs to the :
VS
Drives the Display Panel's Horizontal Electrodes.
To Y-SUS, fused then to the X-Boards. (Not used by Y-SUS).
VA
Primarily responsible for Display Panel Vertical Electrodes.
Used to develop Bias Voltages on the Y-SUS, Z-SUS Boards.
M5V
Y-SUS Delivers VS to Z-SUS Board
VS
Drives the Display Panel's Horizontal Electrodes.
STBY 5V Microprocessor Circuits
17V Audio B+ Supply, Tuner B+ Circuits
5V Signal Processing Circuits
AC_Det and Error_Det. AC D t
There are 2 adjustments located on the Power Supply Board VA and VS. The
M5V is pre-adjusted and fixed. All adjustments are made referenced to Chassis
Ground. Use "Full White Raster" 100 IRE
VS
VR901
VR501
VA
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d E D t
44 May 201 1 50PV450
SMPS p/n: EAY62171101
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Plasma