Samsung PS42S5HX/XEH Service Manual page 107

▶ Adjust the drive waveform so that the last sustain (rising: 15V) and the main reset (falling: 30usec) are the same as those in the
figure.
Rising Ramp variable resistor
Falling Ramp variable resistor
※ The Vsc_h and Vnf voltages are controlled by the DC-DC power part of the Y Main board.
<Voltage Adjustment Specifications>
Vset Vs Vsc_l
195V 210V -190V
Samsung Electronics
Last Sustain
2 0 V
V n f : - 1 7 5 V
Vnf variable resistor
Vsc_h Ve Va
-70V 100V 70V
V s c l : - 1 9 0 V
Vsc_h variable resistor
V n f T P
V s c _h T P
DC-DC
Power
<Y-Main>
Vnf
-175
Circuit Description
Main Reset
3 0 u SE C
13-21