Main Procedure - Optoma EP720 Family Service Manual

3-2 Main Procedure

No Symptom
 No Power
2 Auto Shut Down
- Ensure the Power Cord and AC Power Outlet are securely
connected
- Check Lamp Cover and Interrupt Switch
- Ensure all connectors are securely connected and aren't
broken
- Check Lamp Driver
- Check LVPS
- Check Main Board
- Check LED Status
a. Power LED off, Warning LED red
- Check Lamp
- Check Lamp Driver
- Check Main Board
b. Power LED off, Warning LED ��ashing(1.0s on, 1.0s off) Power LED off, Warning LED ��ashing(1.0s on, 1.0s off)
- Check Thermal Switch
- Check Fan
- Check Main Board
c. Power LED off, Warning LED ��ashing(2.0s on, 2.0s off) Power LED off, Warning LED ��ashing(2.0s on, 2.0s off)
- Check Fan
- Check Main Board
Procedure
EP720/726 Confidential
3-2