Remove the clips on the top of the display before removing the optional display filter as illustrated below.
clips
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Hold the display filter by its sides to avoid leaving fingerprints on the display filter. Wipe off the fingerprints left on the display filter with the filter cleaner. You can also use commercially available cleaners. Do not use solvents such as alcohol or thinner, as they may cause damage to the surface of the display filter. When using other chemical solvents, read the instructions thoroughly. Insert the bottom of the display filter into the groove at the bottom of the display as illustrated below. Insert the display filter so that the clips� protruding parts face left, then turn 90° to lock it in place.