Service manual

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(2) Operation test
Buttons operation
Button description Test criteria
Power button
1. Mechanical motion (Up & Down) should be free from getting stuck
when pressing the button
2. Press “power” button and projector will switch on
Enter
1. Mechanical motion (Up & Down) should be free from getting stuck
when pressing the button.
2. Press Enter button can To confirm selected menu item.
4-way button
1. Mechanical motion (Up & Down) should be free from getting stuck
when pressing the 4-way button.
2.Use four directional buttons to select items or make adjustments to
your selections.
Source
Manually selects an input source.
Lens Shift
Motorized vertical and horizontal lens shift for positioning display
image without physically moving the unit.
Menu/Exit
Opens and Exits the on-screen menu
Foot adjuster operation
Foot adjuster. Test criteria
Foot adjuster button
Foot adjusters should stretch downward smoothly by pressing the foot
adjuster buttons on the two sides
Zoom ring and Focus ring
Ring Test criteria
Zoom ring
Mechanical motion (Up & Down) should be free from getting stuck
when pressing the button.
Press “Zoom” button should be free from getting stuck.
Focus ring
Mechanical motion (Up & Down) should be free from getting stuck
when pressing the button.
Press “focus” button should free from seizing.