LG 50PV450 Manual page 77

Y Y - - SUS SUS (VSC and (VSC and – – Vy) Generation Vy) Generation Checks Checks
Voltage Measurements for the Y-SUS Board
Tip: VS turns on these supplies, but Floating Gnd
10.9V, 23.77V and Chassis Gnd 18V must be running.
VSC Source Test Point. Used Y-SUS Waveform development.
Location
Checked at Cathode Side of D504.
Run: 158V Diode check: Open (Black lead on FGnd)
0.49V (Red lead on FGnd)
D504 Cathode
VSC Source
T500
D505 Cathode
+Vy Source
Floating Ground checks
+Vy Source Test Point. Used Y-SUS Waveform development.
must be measured from
Checked at Cathode Side D505.
Floating Ground.
Run: 190V
Diode check: Open (Black lead on FGnd) Diode check: Open (Black lead on FGnd)
Use pins 3~12 on P214 p
0.56V (Red lead on FGnd)
77 May 201 1 50PV450 Plasma