Acer P7280 Refresh Service Manual page 90

No Symptom
3 No Image
4 No Light On
5 Machanical Noise
6 Line Bar/Line Defect
- 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)
- Ensure all connectors are securely connected and aren't
broken
- Check Lamp Module
- Check Lamp Driver
- Check LVPS
- Check Main Board
- Check Color Wheel
- Check Fan Module
- Check if the Main Board and the DMD Board are
assembled properly
- Check Main Board
- Check DMD Board
- Check DMD Chip
P7280/P7270I/P7280 Refresh/P7270I Refresh Confidential
Procedure
3-3