Samsung HP-R5052 Service Manual page 116

Circuit Description
▶ Adjust the drive waveform so that the main reset (Rising: 100 usec, Falling: 40 usec) are the same as those in the figure.
Rising Ramp
1 0 0 u s
4 0 u s
Rising Ramp Variable resistor
Falling Ramp Variable resistor
<Voltage Adjustment Specifications>
Vset Vs Vsc_l
200V 205V -175V
※ The Vsc_h and Vnf voltages are controlled by the DC-DC power part of the Y Main board.
Y Main Board
13-24
1 0 0 u s
Falling Ramp 4 0 u s
Vsc_h Ve Va
-56V 105V 70V
DC-DC
Vsc_h TP
IPM
DC-DC
Y Main Board
...
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