Sony SEL1635GM Service Manual page 60

5-4-2. Resolving Power Adjustment (mount block
assy)
Adjusting Procedure
1. Increase or decrease the thickness of the back washer to adjust
the partial blur/curvature.
Partial blur: Set the zoom to the TELE end, and change the
thickness of the side where blurring occurs.
Curvature: Set the zoom to the WIDE end, and change the
thickness of the whole.
Front focus: Make the washer thicker.
Rear focus: Make the washer thinner.
BACK WASHER
hole
Thickness t
Part No.
4-571-212-01
4-571-212-11
4-571-212-21
4-571-212-31
4-571-212-41
4-571-212-51
2. Perform the check and adjustment repeatedly until the partial
blur/curvature is resolved.
Note: If the partial blur/curvature cannot be resolved even after
the adjustment, replace the mount block assy.
back washer
Hole position
(mm)
0.03
0.05
0.07
0.1
0.2
0.5
5-22
SEL1635GM