Image Troubleshooting - Eiki EK-620U Service Manual

3-5 (1/2) Image Troubleshooting

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