43
November 2009 50PQ30 Plasma
Y-SUS Board develops the V-Scan drive signal to the Y-Drive boards.
This Section of the Presentation will cover 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
Operating
Voltages
Voltages
SMPS Supplied
VA
VS
M5V
Y-SUS Developed
-VY VR502
VSC VR501
V SET UP VR601
V SET DN VR602
15V
Floating Ground
FG 5V
FG 15V
VA supplies the Panel Vertical Electrodes (Routed to the Left X-Board)
VS Supplies the Panel Horizontal Electrodes (Also routed to the Z-SUS board)
5V Supplies Bias to Y-SUS (Then Routed to the Control board and Z-SUS board)
-VY Sets the Negative excursion of the Y-SUS Drive Waveform
VSC Set the amplitude of the complex waveform.
SET UP sets amplitude of the Top Ramp of the Drive Waveform
SET DOWN sets the Pitch of the Bottom Ramp of the Drive Waveform
To the Control Board then routed to the Z-SUS board
Used on the Y-Drive boards (Measured from Floating Gnd)
Used in the Development of the V-Scan signal (Measured from Floating Gnd)
Y
Y
-
-
SUS BOARD SECTION
SUS BOARD SECTION
•
Adjustments
•
DC Voltage and Waveform Checks
•
Diode Mode Measurements
(Overview)
(Overview)
