LG 50PK950 Training Manual page 83

Y - Drive Upper Board P109 Connector to P117 Y
Y - Drive Upper Board P109 Connector to P117 Y
FG5V measured from Pins 1 or 2
To Floating Gnd
Use screw just below P117 on the Y-SUS
41.8VAC RMS "White"
52.5VAC RMS "Black"
Chassis Gnd
150VAC RMS
From Floating Gnd
P109 Pins 15~20 is the Y-Scan Signal
into the Y-Drive Upper.
(4mSec per/div)
Y-Drive Connected 432~446V p/p
Y-Drive Removed 428V p/p
- SUS (Scan and FG5V)
- SUS (Scan and FG5V)
TIP: Use C325 Right leg to check the
Y-Scan signal if the Y-Drive boards are removed
P109
Y-Drive Upper
Floating Gnd
83 October 2010
P117
19-20) FG5V
18) n/c
17) CLK
16) FGnd
15) STB
14) FGnd
13) OC2
12) FGnd
11) OC2
10) FGnd
09) Data
08) FGnd
07) n/c
01-06) Y-Scan
Y-SUS Board
50PK950 Plasma