Epson BrightLink 1485Fi 5000-Lumen Pixel-Shift Full HD Ultra-Short Throw 3LCD Interactive Laser Projector - Manual (Page 277)

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Input Signal Settings - Signal I/O Menu
Normally the projector detects and optimizes the input signal settings automatically. If you need to
customize the settings, you can use the Signal I/O menu. The available settings depend on the currently
selected input source.
To change settings for an input source, make sure the source is connected and select that source.
Setting Options Description
Volume Varying levels available Adjusts the volume of the projector's
speaker system or external speakers