LG 42PJ350 Training Manual page 65

Y - Drive Board Layout
Y - Drive Board Layout
Y-DRIVE
BOARD
Floating Ground
Floating Ground
Floating Ground
Floating Ground
Y-Scan Signal
P106
Logic (Scan Control
signals) and
Floating Ground 5V
Key Points of interest are;
There are 6 FPC (Flexible Ribbon Cables)
connecting the Y-Drive board to the Panel.
These FPC connect to a total of 768 individual
electrodes determining Vertical resolution.
If the connector P106 is removed and the unit
is powered up with the lugs for Floating Gnd
and Scan making contact with the Y-SUS
board, the Y-SUS or Y-Drive or both boards
will fail.
Floating Ground is delivered to the Y-Drive
board by 4 screw lugs.
Scan is delivered to the Y-Drive board by 1
screw lugs.
The Y-Drive board operates from Floating
Ground, (no reference to Chassis Gnd).
Floating Gnd 5V can be measured across C18
or C523 surface mount electrolytic capacitors.
65 August 2010 42PJ350 Plasma