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August 2009 Plasma 50PS80
The Switch Mode Power Supply Board Outputs to the :
VA
Y-SUS Board
Z-SUS Board
Control Board
Main Board
VS
M5V
(Va = Voltage for Address)
Primarily responsible for Display Panel Vertical Grid (X Boards, TCPs).
Va routed to the Y-SUS then to the left X board.
(Vs = Voltage for Sustain)
Drives the Display Panel Horizontal Grid (SUS Boards)
(M5V = Monitor 5 volts)
Used to develop Bias Voltages on the Y-SUS, Z-SUS and Control
Boards.
17V
Audio B+ Supply
5V
Signal Processing Circuits
Adjustments
There are 2 adjustments located on the Power Supply Board VA and VS. The
5V VCC is pre-adjusted and fixed. All adjustments are made with relation to
Chassis Ground. Use “Full White Raster” 100 IRE. Each panel has its own
adjustment values for Va and Vs. Use the Panel’s Voltage Label for reference.
VA
VS
RV901
RV501
Switch Mode Power Supply Overview
Switch Mode Power Supply Overview
