LG 50PK950 Training Manual page 68

Y - SUS Board P117 to Upper Y
Y - SUS Board P117 to Upper Y
P109
FGnd
Y-Drive Upper
- Drive P109 Logic Signals Explained
- Drive P109 Logic Signals Explained
P117
Y-SUS Board
P117 Pins 4, 6, 8, 10, 12 are Logic (Drive) Signals to the Y-Drive Upper.
1-2) FG5V
03 n/c
04) CLK
05) FGnd
06) STB
07) FGnd
08) OC2
09) FGnd due to the fact they are read from Chassis Gnd,
but they are actually Floating Ground related.
10) OC2
DO NOT
11) FGnd
12) Data
13) FGnd
14) n/c
15-20) Y-Scan
68 October 2010
P117 Pins 4, 6, 8, 10, 12
(4mSec per/div)
The signal for these pins look very similar
hook scope Gnd to Floating Gnd TP
without an Isolation Transformer.
All logic pins about (432V p/p)
with Y-Drives
All logic pins about (392V p/p)
without Y-Drives
50PK950 Plasma