Fisher PDG-DWT50L - Manual (Page 97)

5. Using On-Screen Display
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Filter warning
Set Filter warning to have the projector display a message when the air filter needs servicing.
The message below shows when this function is activated.
Search mode
This feature sets the Auto Adjust mode so that the RGB image can be automatically or manually adjusted for noise and
stability. You can automatically make adjustments in two ways: [Normal] and [Fine].
Normal: The RGB image will be automatically adjusted. Normally select this option (Default).
Fine: Select this option if fine adjustment is needed. It takes more time to switch to the source than the Normal settings.