Panasonic PT-L6500U Service Manual page 18

Be careful not to break the interlock tab.
3. Slide the 4 stack lids to remove.
4. Unscrew the 7 screws fixing the upper case.
5. Lift the upper case and disconnect the 1 connector for the S-
P.C.Board, which is located rear-inside of the upper case, to
remove.
8.3. Removal of S-P.C.Board
1. Remove the upper case according to the section 8.2. "Removal of
Upper Case".
2. Unscrew the 4 screws and remove the S-P.C.Board.
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