5. Alignment and Adjustments
5-1 Lens and Mirror Cleaning
1. Mix the alcohol and ethyl in appropriate proportions. 2. Use a clean cotton cloth or a cleaning paper. 3. Clean the top of the lens by turning it as shown. The pattern starts at the center and proceeds outward, as shown below:
4. Use minimal pressure when rubbing the mirror. Otherwise, the surface will be damaged.
5-2 Focus Adjustment for projection Lens
1. Loosen the 4 screws that secure the optical assembly. 2. After setting the optical assembly on the front cabinet, secure the unit temporarily using the two screws. 3. After applying the liquid crystal panel signal, input a lion head pattern from a pattern generator. 4. Move the focus adjustment screws right and left until the liquid crystal picture element is clearly displayed on the screen. 5. Reposition the optical assembly, and fasten all 4 screws. 6. Check the focus adjustment. 7. Repeat adjustments 1~5, if necessary. FOCUS SECURING SCREW FOCUS SECURING SCREW
