BenQ PB6200 - Manual (Page 73)

73
9. Trouble Shooting Guide
Optical Engine
No. Item Trouble Shooting Guide
1 Brightness
1. Change lamp
2. Check overfill size: If overfill too large, re-install SL and AL to
ensure correct position
2 Uniformity
1. If Uniformity is within 3% of spec: Change lamp
2. Check FM installation
3. Check overfill size: If overfill too small, re-install SL and AL
to ensure correct position
3 FOFO Contrast
1. Clean DMD
2. Clean PL
4 ANSI Contrast
1. Clean PL
2. Clean DMD
3. Change PL
5 Color Check CW 50% point. Replace CW if necessary
6 Color Uniformity Change CM
7 Blue Edge
1. Readjust LP: Make sure the LP end is touching with
DMD_HSG Datum
2. Check LP: If LP is crushed, replace with new LP
8 Blue/Purple Border
1. re-install SL and AL to ensure correct position
2. Check FM installation
9 Focus
1. Change Projection Lens
2. Put shim metal between upper side of DMD and DMD datum
10 Dust Clean DMD
11
Horizontal/Vertical
Strips
1. Check connector between FPC and M/B
2. Re-install DMD with FPC
3. Check if any pin of C-Spring is missing or damaged
4. Change new FPC/C-Spring
5. Change new DMD
12 Pixel Fail Change new DMD