LG 50PS80 Training Manual page 65

Y SUS Floating Ground 5V (5VFG) and Scan Input Check
Y SUS Floating Ground 5V (5VFG) and Scan Input Check
• • Note: All connectors going to the Y Note: All connectors going to the Y
• • P114, P116, P214 and P216. P114, P116, P214 and P216.
• Removing and reinserting the drive board or the Y
• Removing and reinserting the drive board or the Y
cause an intermittent connection or cold connection. cause an intermittent connection or cold connection.
• Investigate these connectors carefully after replacing either
• Investigate these connectors carefully after replacing either
the Y the Y - - SUS or Upper or Lower Y SUS or Upper or Lower Y
necessary. necessary.
Diode Check means the Digital Volt Meter is in Diode Mode.
- - SUS board are fragile. SUS board are fragile.
- SUS can
- SUS can
- - Drive boards and resolder if Drive boards and resolder if
Y - SUS
Y - SUS
P311
P311
1
Floating Floating
Ground
Ground
5V FG
5V FG
n/c
n/c
VSCAN VSCAN
Checked from Floating Gnd. Checked from Floating Gnd.
Y - Drive boards connected.
Y - Drive boards connected.
VSCAN: Black Lead: 0.76V
VSCAN: Black Lead: 0.76V
Black Lead: 0.5V
5V FG: 5V FG: Black Lead: 0.5V
65 August 2009 Plasma 50PS80
Red Lead: Open
Red Lead: Open
Red Lead: 0.6V
Red Lead: 0.6V
Y - SUS
Y - SUS
P313
P313
1
VSCAN
VSCAN
n/c n/c
5V FG
5V FG
Floating
Floating
Ground
Ground