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July 2010 50PJ350 Plasma
Y-SUS Board develops the V-Scan drive signal to the Y-Drive boards.
This Section of the Presentation will cover alignment and troubleshooting the Y-SUS Board
for the Single Scan Plasma. Upon completion of the Section the technician will have a better
understanding of the operation of the circuit and will be able to locate voltage and
Diode mode test points needed for troubleshooting and alignments.
Operating Voltages
Operating Voltages
SMPS Supplied
VA
VS
M5V
Y-SUS Developed
-VY VR502
VSC VR501
V SET UP VR401
V SET DN VR402
16V
Floating Ground
FG 5V
FG 15V
VA supplies the Panel’s Vertical Electrodes (Routed to the Left X-Board)
VS Supplies the Panel’s Horizontal Electrodes. Also Routed to the Z-SUS board.
M5V Supplies Bias to Y-SUS. (From Y-SUS routed to the Control Board then Z-SUS).
-VY Sets the Negative excursion of Reset in the Drive Waveform
VSC Sets the amplitude of the complex waveform.
SET UP sets amplitude of the Top Ramp of Reset in the Drive Waveform
SET DOWN sets the Pitch of the Bottom Ramp for Reset in the Waveform
Used internally to develop the Y-Drive signal. (Also routed to the Control Board
then routed to the Z-SUS board).
Y
Y
-
-
SUS BOARD SECTION
SUS BOARD SECTION
• Adjustments
• DC Voltage and Waveform Checks
• Diode Mode Measurements
(Overview)
(Overview)
Used on the Y-Drive boards (Measured from Floating Gnd)
Used in the Development of the
Y-
Drive Waveform (Measured from Floating Gnd)
