Optoma EP720 Family Service Manual page 29

No Symptom
8 Color Abnormal
Poor Uniformity/
9
Shadow
Dead Pixel/Dust
0
(Out of spec.)
 Garbage Image
Remote Control/
2
Control Panel Failed
3 Function Abnormal
- Do "Reset(All data)" of the OSD Menu
- Adjust Color Wheel Index
- Check Main Board
- Check DMD Board
- Check Color Wheel
- Ensure the projection screen without dirt
- Ensure the projection lens is clean
- Ensure the Brightness is within spec
- Check rod alignment
- Check Engine Module
- Ensure the projection screen without dirt
- Ensure the projection lens is clean
- Clean DMD Chip and Engine Module
- Check DMD Chip
- Check Engine Module
- Ensure that the signal cables and source work as well.
- Check Main Board
- Check DMD Board
- Remote Control
a.Check Battery
b.Check Remote Controller
c.IR receiver
d.Check Main Board
- Control Panel
a.Check FPC
b.Check keypad
c.Check Main Board
- Do "Reset(All data)" of the OSD Menu
- Check Main Board
- Check DMD Board
Procedure
EP720/726 Confidential
3-4