You need to navigate through the menu and look for the setting that lets you change the orientation. If the projector in mounted on the ceiling, then you need to change the orientation to ceiling. If its on a table, then change it to upright.
data projector is locked for operation. I cannot use it. everytime I press any of its button,it says...
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data projector is locked for operation. I cannot use it. everytime I press any of its button,it says "operation is locked" release. Release the 'operation lock' setting