Panasonic TH-42PM50U Service Manual page 13

3. Disconnect the flexible cables (SU1, SU2 and SU3) connected to
the SU-Board, and remove the SU-Board.
6.13. Remove the SD-Board
1. Remove the screws (×2 )
2. Slide the SD-Board to the left to disconnect from a coupler (SC42 -
SD42) on the SC-Board and disconnect a coupler (SD46 or SC46).
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