Panasonic PT-40LC12 Service Manual page 33

HOW TO INSTALL THE FILTER TOOL
1. Put the Filter tool on the Front Fan as shown.
2. Press at the center of the Filter tool and release.
(Click sound can be heard when the inside portions of the
Filter tool hook to the inside edge of the Front Fan. )
Filter tool (LSYF0532)
Hooking Portion
Hooking Portion
Front Fan
Note:
When removing the Filter tool,
pick this portion to remove.
Hooking Portion
Press at the center
Fig. 3-3