LG 50PJ340 Training Manual - Page 59

Y-SUS Floating Ground (FG 15V) and (FG 5V) Checks

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Y-SUS Floating Ground (FG 15V) and (FG 5V) Checks Voltage Measurements for the Y-SUS Board TIP: These components are on the back of the board. To Test these voltages, remove the board completely, supply Ground and any 5V supply to M5V fuse FS202. P118 D511 FG 19.86V FG 15V Regulator IC508 Floating Ground checks must be made from Floating Ground. Use bottom two or top two screws on the far left hand side of the Y-SUS. D513 FG 15.24V D512 FG 9.17V FG 5V Regulator IC509 D514 FG 4.97V FG5V (Floating Ground 5V). Checked at IC509 Bottom Leg. FG15V (Floating Ground 15V). Checked at IC508 Bottom Leg. Location Location Back Side of Board 59 July 2010 50PJ350 Plasma

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59
July 2010
50PJ350
Plasma
Voltage Measurements for the Y-SUS Board
Y
-
SUS Floating Ground (FG 15V) and (FG 5V) Checks
SUS Floating Ground (FG 15V) and (FG 5V) Checks
Floating Ground checks must be made from
Floating Ground.
Use bottom two or top two screws on the far left
hand side of the Y-SUS.
Location
FG 5V
Regulator
IC509
FG 15V
Regulator
IC508
D513
FG 15.24V
FG5V (Floating Ground 5V). Checked at IC509 Bottom Leg.
FG15V (Floating Ground 15V). Checked at IC508 Bottom Leg.
P118
TIP: These components are on the back of the board. To Test
these voltages, remove the board completely, supply Ground
and any 5V supply to M5V fuse FS202.
D511
FG 19.86V
D512
FG 9.17V
D514
FG 4.97V
Location
Back Side of Board