LG 50PC1DR Owners Manual - Page 4

Switch Mode Power Supply Troubleshooting

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Switch Mode Power Supply Troubleshooting This Section of the Presentation will cover troubleshooting the Switch Mode Power Supply for the Single Scan Plasma. Upon completion of the section the technician will have a better understanding of the operation of the Power Supply circuit and will be able to locate voltage and test points needed for troubleshooting and alignments. • DC Voltages developed on the SMPS • Adjustments VA, VS, and 5V DC • Always refer to the sticker located in the upper right side of the PDP for the correct voltage levels for the DC 5v, VA, VS, V SET UP, -VY, VSC, and Z Bias as they will vary from Panel to Panel. V SET_UP -VY VSC Z_BIAS Plasma Display Panel Troubleshooting - 2007 4

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4
Plasma Display Panel Troubleshooting - 2007
Switch Mode Power Supply Troubleshooting
This Section of the Presentation will cover troubleshooting the Switch Mode Power Supply for the Single
Scan Plasma. Upon completion of the section the technician will have a better understanding of the operation
of the Power Supply circuit and will be able to locate voltage and test points needed for troubleshooting and
alignments.
•
DC Voltages developed on the SMPS
•
Adjustments VA, VS, and 5V DC
•
Always refer to the sticker located in the upper right side of the PDP for the correct voltage levels
for the DC 5v, VA, VS, V SET UP, -VY, VSC, and Z Bias as they will vary from Panel to Panel.
V SET_UP
VSC
Z_BIAS
-
VY