Main Board Removal; Control Board Removal - LG 50PG20 Training Manual

Disassembly Procedure for Circuit Board Removal (2)
Disassembly Procedure for Circuit Board Removal (2)
Z SUS Board Removal
Remove the following connectors P3, P2
Remove the 6 Screws
Lift the PWB up slightly and pull PWB to the left to disengage the connectors going to the FPC cables interface
PWBs.
When reinstalling PWB, be sure to check Va/Vs and then readjust ZBias according to the voltage panel label.

Main Board Removal

Remove the following connectors P302, P303, P701 and the Speaker plug CN701
Remove the 2 Screws holding the decorative black plastic piece over the input jacks and remove.
Remove the 4 screws holding the PWB in place and remove.
NOTE: If the PWB just needs to be out of the way;
Remove the 2 Screws holding the decorative black plastic piece over the input jacks and remove.
Remove the two screws at the top of the Main PWB mounting brackets, loosen the tape at the bottom of
the bracket, unplug P701 and CN701 and swing the PWB up and to the right.

Control Board Removal

Remove the following connectors; P111, P163, P162, P161, P151
Carefully remove the LVDS Cable P121 from the Control Board by pressing the Locking Tabs together and
pulling straight out.
Remove the 4 screws in each corner.
Pay attention to the back side. Note: The rubber looking pad is actually a "Temperature Transfer Medium". Be
sure to remove this pad from the old PWB and place the pad back on the New PWB before installation.
Plasma Spring 2009
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50PG20