Optoma H31 Service Manual page 23

3-2.2 B. Performance Troubleshooting
Start
have
signal
Yes
Have image ?
Yes
Display Ab-
normal ?
No
Have bar at the
right & left side of
image ?
Yes
Uniformity OK ?
Yes
Is color OK ?
Yes
Dot defect isn't
compliant with the
spec.?
No
Have line bar ?
1
Coretronic Corporation
No
change
cable
No
No
Change
M/B
No
Yes
Change
M/B
No
Change
DMD Board
Change
No
Engine Module
No
Color Adjust
Procedure
* Note 1
Change
Yes
DMD Chip
Adjust
No
Yes
frequency
3-4
Change
Change
No
DMD
Board
Change
DMD Board
No
Change
M/B
No
Change
DMD Board
No
Change
Engine
Module
Change
M/B
DMD
Chip
H31