Inspection Procedure - Optoma EP735 Service Manual

8-4 Inspection Procedure

8-4.1 RESET
Please press "Menu" button on the projector panel to enter "Factory Reset" Function
then choose "YES" and press "Enter" to see if it works. This action will allow you to erase
all end-user's settings and restore the original factory setting.
8-4.2 Hi-Pot and Grounding Test
Hi-Pot Specification : 1.5kVAC ,10mA , 2 seconds
Grounding Specification : 12VDC, 25A, 0.1 ohm
8-4.3 Clock and Clock Phase
Test Signal : 1024*768 @ 85Hz
Test Pattern : Line Moire Pattern
Check and see if image sharpness and focus is well performed.
If not, readjust by following steps,
Enter "Digital Conversion" menu and select "Clock" Function to adjust the total
pixel number of pixel clock in one line period.
Then Select "Clock Phase" Function and use right or left arrow key to adjust the
value to minimize video flicker.
8-4.4 R, G, B and White Colors Contrast
Test Signal : 1024*768 @ 85Hz
Test Pattern : 64 or 16 R,G,B and White colors Intensities Pattern
Please check and see if each colors is normal and distinguishable.
If not, please return the unit to repair area.
8-4.5 Screen Uniformity and Flicker
Test Signal : 1024*768 @ 85Hz
Test Pattern : Full White Pattern
Please check and see if it's in normal condition.
If not, please return the unit to repair area.
EzPro735
EzPro735
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ERVICE
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ANUAL