Optoma EP783 Service Manual page 70

11. Check Firmware version.
- Re-plug in power cord, then restart the
unit and get into the Service mode to
check the firmware version.
(To get into service mode, please press
"Power", "Left", "Left" and "Up" buttons
sequentially.)
Confidential
EP783/EP783S/EP783L/OPX5000/TX783L/TX783S 5-7