Optical & Optical Engine Trouble Shooting Guide; “Blue Edge” Trouble Shooting - BenQ MP611 Product Service Manual

Chapter 2 Optical & Optical Engine Trouble Shooting Guide
No. Item
1 Brightness
2 Uniformity
3 FOFO Contrast
4 ANSI Contrast
5 Color
6 Color Uniformity
7 Blue Edge
8 Blue/Purple Border
9 Focus
10 Dust
Horizontal/Vertical
11
Strips
12 Pixel Fail
2-1. "Blue Edge" Trouble Shooting:
I. Re-adjust "Overfill" first.
For Overfill Re-adjustment:
i. Those 2 Adjustment Screws must be released for around 2 mm first.
ii. Alignment Sequence:
Trouble Shooting Guide
1. Change lamp
1. Change lamp
1. Check ADC calibration
2. Check user's menu brightness & contrast are default
3. Clean DMD
4. Clean PL
5. Check ILL stop assy
1. Clean PL
2. Clean DMD
3. Change PL
1. Check color wheel delay
2. Check CW 50% point. Replace CW if necessary
1. Change lamp
1. Refer to Item#2-1 (attached below)
2. Change CM
3. Change SUB HSG
1. Refer to Item#2-1(attached below)
2. Change CM
3. Change SUB HSG
1. Change Projection Lens
2. Check PL datum and DMD parallel
Clean DMD
1. Check connector between chipBD and MainBD
2. Re-install DMD with chipBD
3. Check if any pin of C-Spring is missing, damaged or dirty
4. Change new ChipBD/C-Spring
5. Change new DMD
Change new DMD
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