Read Sharp XR-30X (serv.man4) Service Manual online
XR-30S/XR-30X/XG-F210X
3 – 3
"Fixing and checking method of the focus ring base"
1) Match the paint mark and the mark as shown in the figure.
2) Fully turn the focus ring base in the anticlockwise direction viewed from the front. At this time, adjust the zoom to any position.
Project an image, and check that the focus area is within 0.75m to 1.4 m as shown in the figure below.
Adjust the mark.
Adjust the paint mark.
About 1.6mm
0.75m~1.4m