EP732B
4-5
4-4 Inspection Procedure
Screen Uniformity and Flicker
Test Signal: 800 x 600 @ 85/75/72/60 Hz
Test Pattern: Full White Pattern
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Please check and see if it’s in normal condition.
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If not, please return the unit to repair area.
Dead Pixel/Blemish Pixel
Test Signal: 800 x 600 @ 85/75/72/60 Hz
Test Pattern: Gray 30, Blue 180, White, Dark, Red, Green, & Blue Pattern
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Please check and see if there are dead pixels on DMD chip.
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The total numbers and distance of dead pixels should be complaint with
specification.
Reset
Please press “Menu” button on the projector panel to enter OSD Menu. Then press
“ -” or “ +” to choose “Image II” function. Press “Enter” button to choose
“Reset” function, and then press “Enter” to check if it works. This action will allow
you to erase all end-users’ settings and restore the original factory setting.
Clock and Clock Phase
Test Signal: 800 x 600 @ 85/75/72/60 Hz
Test Pattern: Line Moire Pattern
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Check and see if image sharpness and focus is well performed.
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If not, readjust by following steps.
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Enter “Image II” menu and select “Frequency” Function to adjust the total pixel
number of pixel clock in one line period.
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Then select “Tracking” Function and use “ - ” or “ + ” key to adjust the value to
minimize video flicker.
R, G, B and White Colors Contrast
Test Signal: 800 x 600 @ 85/75/72/60 Hz
Test Pattern: 64 or 16 R, G, B and White colors Intensities Pattern
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Please check and see if each color is normal and distinguishable.
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If not, please return the unit to repair area.
