Optoma H27 Service Manual page 21

- Check DMD Chip
- Check Engine Module
3-2.4 No Light on
- Ensure that all connectors are securely connected and haven't broken.
- Check Lamp Module
- Check LVPS
- Check Lamp Driver
- Check Main Board
3-2.5 Mechanical Noise
- Check Color Wheel
- Check Fan Module
- Check LVPS
- Check Lamp Driver
- Check Engine Module
3-2.6 Line Bar/Line Defect
- Sometimes it's because of DMD chip and DMD board did not assemble properly
- Check DMD Board
- Check DMD Chip
- Check Main Board
3-2.7 Image Flicker
- Do "Factory Reset" of the engineering mode.
- Ensure that the signal cables and source are work as well.
- Check Lamp Module
- Check Color Wheel
- Check DMD Board
- Check Main Board
3-2.8 Color Abnormal
- Check "Color Setting" of the engineering mode.
(including ADC calibration and Color Wheel index)
- Check Main Board
- Check DMD Board
- Check Color Wheel
3-2
H27