Performance Troubleshooting - Acer PD721 Service Manual

Performance Troubleshooting

Start
No
Have image?
Yes
Yes
Have garbage
pattern?
No
No
Uniformity OK?
Yes
No
Is color OK?
Yes
Dot defect isn’t
compliant with
the spec.?
No
Yes
Have line bar?
No
Yes
Have noise?
No
End
29
No
Change
M/B
No
Change
M/B
Change
Engine Module
Color Adjust
No
Procedure
* Note 1
Yes Change
DMD CHIP
No
Adjust
frequency
Adjust
tracking
Change
DMD Board
Change
DMD Board
Change
No
Photo
Sensor
No
Change
DMD Board
M/B
No
Change
M/B
Change
No
DMD CHIP
No
Change
M/B
No
Change
DMD CHIP
Change
DMD
Board
Change
Chapter 4