Optoma EP739 Service Manual page 26

C. Is Color OK?
- Do the "Factory Reset" of the engineering mode.
- Ensure the signal cable work as well.
- Check the color temperature setting of OSD menu.
(Check the main board if the setting of color temperature is under default)
- Check the color setting of OSD menu.
(Check the main board if the setting of color is under default)
- Check the "Degamma", "Saturation", "Tint" and "Sharpness" setting
of OSD menu.
(Check the main board if the setting of above setting are under default)
D. Is Image Flicker?
- Ensure the signal cable work as well.
(Please check the length of cable; the signal will be reduce when the
signal cable is longer than 5m)
- Do the "Factory Reset" of the engineering mode.
(Check the Main board if the image still flicker after the factory reset.)
E. Is There Line Bar Show On The Screen?
- Check that can OSD menu display on the line bar area.
(Check the DMD board if the OSD menu cannot display on the line bar area.)
(Check the Main Board if the OSD menu can display on the line bar area)
F. Is Image Noise?
- Ensure the signal cable is work as well.
(Check the cable length of cable; the signal will be reduce when the
signal cable is longer than 5m)
- Do the "Factory Reset" of the engineering mode.
(Check the Main board if the image still display with noise.)
3-5
EP739/EP739H/EP738
Series