Sony SAL1680Z Service Manual page 63

2. Adjustment Procedure
1) Rotate the aperture block from the lens front so that the aperture blades are hidden behind the aperture hold ring.(Fig.4-2-9)
2) Remove the maximum aperture jig once. Then, install the maximum aperture jig again and confirm the position of aperture blades.
3) Confirm the aperture tolerance. Repeat the confirmation and adjustment until the aperture tolerance meets the specification.
4) After completing the adjustment, apply the adhesive bond (B-10) to the three indicated locations.(Fig.4-2-9)
Aperture Block
Hold SP
SAL1680Z (Vario-Sonnar DT 3.5-4.5/16-80 ZA) (Vario-Sonnar T
Apply the adhesive bond (B-10)
Apply the adhesive bond (B-10)
Fig.4-2-9
Aperture Hold Ring
Aperture Blade
DT 16-80mm F3.5-4.5 ZA)
*
4-17