EK-620U/EK-621W
3-5
3-5 (1/2) Image Troubleshooting
Start
Have brigh dots on
the screen?
Dose the projector
display no screen?
Change DMD Chip
Does the PC/Video
image on the
screen?
Ensure signal cable
and signal source
work fine
Is the problem
solved?
Change M/B
P-2
No
No
Yes
Yes
Replace DMD board
No
No
Yes
Yes
Dose the HDMI
image show on the
screen?
Yes
Ensure signal cable
and signal source
work fine
Is the problem
solved?
Change M/B
No
No
Yes
Dose the projector
display no screen?
No
Yes
Replace M/B
