EP770
3-3
Confidential
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” of the OSD Menu
- Ensure the Signal Cable and Source work
- Check Lamp Module
- Check Color Wheel
- Check DMD Board
- Check Main Board
8
Color Abnormal
- Do “Reset” 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.
(Replace the Lamp if the Brightness is less
than spec.)
- Check Engine Module
0
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
Garbage Image
- Ensure the Signal Cable and Source work
- Check Main Board
- Check DMD Board
