LG 50PK950 Training Manual page 73

Y - SUS Floating Ground (FG 15V) and (FG 5V) Checks
Y - SUS Floating Ground (FG 15V) and (FG 5V) Checks
Voltage Measurements for the Y-SUS Board
Tip: M5V turns on these supplies.
FG15V (Floating Ground 15V). Checked at IC303 Top Right Leg.
Floating Ground
checks must be made
from
Floating Ground.
Use any screw on the
far left hand side of
the Y-SUS.
Floating
Gnd
IC304
IC304
FG5V (Floating Ground 5V). Checked at IC304 Left Leg.
Leaves the Y-SUS board on P118 pins 19 and 20 and P117 pins 1 and 2
P118
FG 5V
Regulator
IC304
Heat Sink
FG24V
Use right leg to
check for source
FG 15V
Regulator
IC303
D303
D302
T301
FG11V
73 October 2010
IC303
T302
Location
50PK950
IC303
Use left leg to
check for source
Plasma