Optoma 723 Family, Service Manual

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EP721/727/723/728 Family / EW1610 Family Confidential
3-3
No Symptom Procedure
5 Mechanical Noise
- Check Color Wheel
- Check Fan Module
6 Line Bar/Line Defect
- Check if the Main Board and the DMD Board are
assembled properly
- Check Main Board
- Check DMD Board
- Check DMD Chip
7 Image Flicker
- Do “Reset (All data)” of the OSD Menu
- Ensure that the signal cables and source are work as well
- Check Lamp Module
- Check Color Wheel
- Check DMD Board
- Check Main Board
8 Color Abnormal
- Do “Reset (All data)” of the OSD Menu
- Adjust Color Wheel Index
- Check Main Board
- Check DMD Board
- Check Color Wheel
9
Poor Uniformity/
Shadow
- Ensure the projection screen without dirt
- Ensure the projection lens is clean
- Ensure the Brightness is within spec
- Check rod alignment
- Check Engine Module
10
Dead Pixel/Dust
(Out of spec.)
- Ensure the projection screen without dirt
- Ensure the projection lens is clean
- Clean DMD Chip and Engine Module
- Check DMD Chip
- Check Engine Module
11 Garbage Image
- Ensure that the signal cables and source work as well.
- Check Main Board
- Check DMD Board