LG 42PQ30 Training Manual page 21

Disassembly Procedure for Circuit Board Removal (2)
Disassembly Procedure for Circuit Board Removal (2)
Z-SUS Board Removal
Disconnect the following connectors: P3, P2.
Disconnect the following connectors: P6 and P7. These are the FPC cables. Pull the locking caps to the
right. Lift carefully the Flexible Printed Circuits (FPCs) and slide them out to the right.
Remove the 5 screws holding the PWB in place
Lift the PWB up and remove the PWB.
When replacing, be sure to readjust the Va/Vs voltages in accordance with the Panel Label.
Confirm VS, -Vy and Zbias as well.
Main Board Removal
Disconnect the following connectors: P301, P1001, P1002 and P1005
Remove the 1screws holding on the decorative plastic piece on the right side
Remove the 4 screws holding the PWB in place and Remove the PWB.
Control Board Removal
Disconnect the following connectors: P121 LVDS, P101, P111 Ribbon, P161 Ribbon and P162 Ribbon.
Remove the 4 screws holding the PWB in place Remove the PWB.
Front Key and LED PWB Removal
Remove the 2 screws holding the Key PWB in place. Remove the PWB. Disconnect P101, (Note:
LED PWB is behind the Key PWB. Remove it's 2 screws and remove. Disconnect J1 and J2.
X-Drive Boards Removal
Disconnect the following connectors: P232, P211, P311 and P331
Remove the 6 screws holding the Heat Sink in place. Rock back and slide down to remove.
Disconnect the following connectors: P201 through P206 and P301 through P306
Remove the 3 screws holding each of the X Drive PWBs in place (8 total)
Remove the PWBs.
Preliminary Information 42PQ30
21