Samsung PS-50Q7HD Service Manual page 45

Circuit Description
▶ Adjust the drive waveform so that the main reset (rising, falling:40usec) is the same as those in the F/W pattern.
(※ Attachment 1 reference)
120usec
70usec
Vsc_h Variable
register
Rising ramp
Variable register
Falling ramp
Variable register
< Y-Main >
<Voltage Adjustment Specifications>
Vset Vs Vsc_l Vsc_h Ve Va
190V 200V -190V -70V 115V 65V
Samsung Electronics 13-17