LG 50PG20 Training Manual page 87

CONTROL PWB SECTION
CONTROL PWB SECTION
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.
Signals
Signals
Operating Voltages
Operating Voltages
Y SUS Supplied
Y SUS Supplied
• DC Voltage and Waveform Test Points
• Resistance Test Points
Main Board Supplied
Y SUS Supplied
Developed on the
Control board
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.
LVDS Signal
5V VCC
1.8V
(2) 3.3V
Plasma Spring 2009
87
50PG20