Control Board Section - LG 50PV450 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 test points needed for troubleshooting.
Signals
Main Board Supplied Panel Control and LVDS (Video) Signals
Control Board Generated Y SUS and Z SUS Drive Signals (Sustain) Control Board Generated Y-SUS and Z-SUS Drive Signals (Sustain)
Operating Voltages
Developed on the Control Board
• DC Voltage and Waveform Test Points
• Diode Mode Test Points
Y-SUS Supplied
C
Y-Drive Board Scan Signals (Gate Address)
X Board Drive Signals (RGB Address)
+5V (M5V) Developed on the SMPS
+18V (Routed to the Z-SUS)
(Not used by the Control Board)
+1.0V (IC61) for internal use
+1.8V (IC52) for internal use.
+3.3V (IC51) for LVDS Power
+3.3V (IC53) for the X-Boards (TCPs)
105
Silk screened as IC25.
May 201 1 50PV450 Plasma