Main Procedure - Optoma EP721 Family Service Manual

3-2 Main Procedure

No Symptom
1 No Power
2 Auto Shut Down
3 No Light On
4 No Image
- 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. Lamp LED Light Red, Power LED OFF, Temp-LED OFF
- Check Lamp
- Check Lamp Driver
- Check Main Board
b. Temp LED Light Red, Power LED OFF, Lamp LED OFF
- Check Thermal Sensor
- Check Thermal Switch
- Check Fan
c. Power LED Flashing Amber, Lamp LED OFF, Temp LED
OFF
- Check Color Wheel
- Check Photo Sensor
- Ensure all connectors are securely connected and aren't
broken
- Check Lamp Module
- Check Lamp Driver
- Check LVPS
- Check Main Board
- Ensure the Signal Cable and Source work
(If you connect multiple sources at the same time, use the
"Source" button on the control panel to switch)
- Ensure all connectors are securely connected and aren't
broken
- Check Main Board
- Check DMD Board
- Check Color Wheel
- Check DMD Chip
- Check Engine Module
EP721/727/723/728 Family / EW1610 Family
Procedure
Confidential
3-2