Control Board Section - LG 42PQ30 Training Manual

CONTROL BOARD SECTION

CONTROL BOARD 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
• DC Voltage and Waveform Test Points
• Resistance Test Points
Main Board Supplied
Control Board Generated
Y SUS Supplied
Developed on the
Control board
LVDS Signal
Y and Z Sustain Drive Signals (Luminance)
X Board Drive Signals (Color)
+5V (Also Routed to the Z-SUS)
+15V (Routed to the Z-SUS)
+1.8V
(2) +3.3V
77 Preliminary Information 42PQ30