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(2) Operation test
Buttons operation
Button description Test criteria
Power button 1. Touch “power” button and projector will switch on, and in standby
mode the LED should solid.
2. Touch the “power” button (Up & Down) should be sensitive
3. The LED indicator lighteness and uniformity normally
Menu/Enter 1. Touch Menu/Enter button can make projector function normally.
2. Touch the button (Up & Down) should be sensitive
3. The LED indicator lighteness and uniformity normally
4-way button 1. Mechanical motion (Up & Down) should be sensitive when touch
4-way button.
2. Touch 4-way button button can make projector function normally.
3. The LED indicator lighteness and uniformity normally
Foot adjuster operation
Foot adjuster. Test criteria
Foot adjuster button Foot adjusters should stretch downward smoothly by rotate the foot
adjuster feet
Zoom ring and Focus ring
Ring Test criteria
Zoom ring Mechanical motion of rotating Zoom ring to the end of right and left by
hand should be free from getting stuck.
Focus ring The feeling of rotating Focus ring to the end of right and left by hand
should free from seizing
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