Acer VZ.J9000.001 Datasheet download pdf (Page 60)

Optical Problems Checking Items

No.

Item Trouble Shooting Guide

1 Brightness

1. Change lamp

2 Uniformity

1. Change lamp

3 FOFO Contrast

1. Check ADC calibration

2. Check user’s menu brightness & contrast are default

3. Clean DMD

4. Clean PL

5. Check ILL stop assy

4 ANSI Contrast

1. Clean PL

2. Clean DMD

3. Change PL

5 Color

1. Check color wheel delay

2. Check CW 50% point. Replace CW if necessary

6 Color Uniformity

1. Change lamp

7 Blue Edge

1. Refer to next page

2. Change CM

3. Change SUB HSG

8 Blue/Purple Border

1. Refer to next page

2. Change CM

3. Change SUB HSG

9 Focus

1. Change Projection Lens

2. Check PL datum and DMD parallel

10 Dust

Clean DMD

Horizontal/Vertical

Strips

1. Check connector between chip BD and Main BD

2. Re-install DMD with chip BD

3. Check if any pin of C-Spring is missing, damaged or dirty

4. Change new Chip BD/C-Spring

5. Change new DMD

12 Pixel Fail Change new DMD

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Acer VZ.J9000.001 Datasheet Page 60