LG 42PQ30 Training Manual page 73

Z - SUS Waveform
Z - SUS Waveform
Provides the SUSTAIN PULSE and ERASE PULSE for
generating SUSTAIN discharge in the panel by receiving
Drive signals from the Y-Z-SUS PWB.
This waveform is supplied to the panel through FPC (Flexible
Printed Circuit).
Z-Bias is a "DC" adjustment.
The effects of this adjustment can be observed on the scope
looking at the Z-SUS output.
Z Drive
Waveform
50V/div
This Waveform is just for reference to observe the effects of Zbz adjustment
(Vzb) Z Bias VR8
Vzb voltage
+ - 1V
80 V
400uS/div
Note: The Vzb Adjustment is a
Preliminary Information 42PQ30
73
Z-SUS
PWB
Oscilloscope Connection Point.
J27 to check Z Output waveform.
Right Hand side Center.
DC level adjustment