Samsung HLN507W1X/XAA, Service Manual, Page: 33 / 90

Alignment and Adjustments
Samsung Electronics 1-31
1-9 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.
1-10 Focus Adjustment for projection Lens
1. Input the Cross hatch pattern or lion head pattern
from the pattern generator.
2. Lift up the Focus Cover in the Optical Engine.
(Fig. 1)
3. Move the focus adjustment dial to the colckwise
or counter clockwise until the picture is clearly
displayed. (Fig. 2)
4. Reposition the Focus Cover in the Optical Engine.
(Fig. 3)
5. Check the focus adjustment.
6. Repeat adjustment 1~5, If nessary.