LG 42PJ350 Training Manual page 23

Disassembly Procedure for Circuit Board Removal (2)
Disassembly Procedure for Circuit Board Removal (2)
Z-SUS Board Removal
Disconnect the following connectors: P1 and P2, then P4 by pulling out the locking mechanism and pulling out the
FPC to the panel. Note, slide a thin object (top side) between ribbon and connector to remove.
Remove the 9 screws holding the board in place.
Lift up slightly to clear the screw stand-offs and pull the Z-SUS upward to unseat P3/P2 from the Z-SUB board and
remove the Z-SUS board.
When replacing, be sure to readjust the Va/Vs voltages in accordance with the Panel Label.
Confirm VS, -Vy and Z-bias (VZB) as well.
Z-SUB Board Removal
Remove the two screws in the Z-SUB board. Remove P1 by pulling out the locking mechanism and pulling out
the FPC to the panel, See note above concerning P4 removal. Pull down and remove Z-SUB.
Main Board Removal
Disconnect the following connectors: P703 LVDS and P301 (press gently inward on the locking tabs) and pull
out, P704 and P801. Remove 1 screw in the decorative plastic piece and remove.
Remove the 4 screws holding the Main board in place and Remove the board.
Control Board Removal
Disconnect the following connectors: P121 LVDS, P101 Ribbon and P102. Then P161, P162 Ribbons by lifting
up the locking tab. Remove the 1 screws holding the Control board in place. Lift up the bottom and pull down to
unseat it from the two metal supports at the top and Remove the board. Pay attention to the top right back side
of the board. There is a piece of rubber (Chocolate) that may fall off. Be sure to replace the rubber piece.
Front IR and Key Pad Removal
FRONT IR/INTELLIGENT SENSOR and POWER BUTTON:
Disconnect P100 and P101. Note: P101 is a ribbon connector. Lift up the locking mechanism and slide the
ribbon cable out. Remove the Board by lifting up on the top tabs, lift the board and remove.
KEY PAD:
The Key Pad is a thin strip of static sensitive material attached to the front glass. It is not removable.
23 August 2010 42PJ350 Plasma