P7280/P7270I/P7280 Refresh/P7270I Refresh
Confidential
3-3
No
Symptom
Procedure
3
No Image
- Ensure the Signal Cable and Source work
(If you connect multiple sources at the same time, use the
“Source” button swtich)
- Ensure all connectors are securely connected and aren’t
broken
- Check Main Board
- Check DMD Board
- Check I/O Board
- Check DMD Chip
- Check Engine Module
- Check Wireless Module and IP address (If you use WLAN or
LAN to transfer signal)
4
No Light On
- Ensure all connectors are securely connected and aren’t
broken
- Check Lamp Module
- Check Lamp Driver
- Check LVPS
- Check Main Board
5
Machanical 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