LG 50PG20 Series, Training Manual

Page: 87 / 127

Plasma Spring 2009 50PG20
87
CONTROL PWB SECTION CONTROL PWB SECTION
• DC Voltage and Waveform Test Points
• Resistance Test Points
Signals Signals
Y SUS Supplied 5V VCC
Developed on the 1.8V
Control board (2) 3.3V
This Section of the Presentation will cover troubleshooting the Control Board Assembly. Upon completion
of this section the Technician will have a better understanding of the circuit and be able to locate voltage
and resistance test points needed for troubleshooting.
Main Board Supplied LVDS Signal
Operating Voltages
Operating Voltages
Y
Y
SUS
SUS
Supplied
Supplied
15V supplied to Control board from the Y-SUS board.
But routed through Control board to Z-SUS.
15V not used by the Control board.