LG 50PG20 Series, Training Manual

Page: 51 / 127

Plasma Spring 2009 50PG20
51
P206
VS and VA Input
from the SMPS
-Vy ADJ R501
P209
VSC ADJ R502
V SET UP VR 302
P208
FS201 (Vs)
P207
To Y-Drive
To Y-Drive
To Y-Drive
V SET DN
VR 601
Y Y - - SUS PWB Layout SUS PWB Layout
-VY TP
R201
VSC TP
R202
FS502 125V 1.5A
FS501 125V 1.5A
FS504 125V 1.5A
FS503 (5V) 125V 5A
P102
Logic Signals from the Control PWB
P210
15V and Va to Center X PWB
P206, P207 and P208 provide
Logic (Drive) Signals to the Y
Drive PWBs
Y Drive TP
Bottom Y-
Drive PWB
This Voltage will read Positive
Di
sc
re
te
Co
mponents (No IPM)
Di
sc
re
te
Co
mponents (No IPM)
Di
sc
re
te
Co
mponents (No IPM)
FS701 (Va) 125V 10A
FS202 (5V) 125V 10A
Glass 250V 4A
(All fuses read -90V) from chassis ground
Voltage Label
Related to Y-SUS
Floating Gnd Gnd
Floating Gnd 15V
Floating Gnd 5V
Protecting Floating Gnd Power Supply Pulse
Use right side
Of C213 to test
Y-SUS signal