Sony SAL1680Z Service Manual page 72

2. Adjustment Procedure
1) Set the zoom to 16mm.
2) Set the focus ring to the ∞ (infinity) end.
3) Rotate the knob of flange back tester to achieve good focus.
4) Rotate the knob of flange back tester until it reaches the position where the value shows the displayed numeral of dial gauge + 0.02.
5) Set the zoom to 80mm.
6) Rotate the focus ring to achieve good focus.
7) Loosen two screws fixing the focus stopper and set the focus stopper in the arrow direction while holding the focus ring by hand not
to move. Then, tighten two screws.
8) Repeat steps 1) to 7) until the amount of focus-shift is within 0.02mm.
9) After completing the adjustment, apply the adhesive bond (B-10) to the locations shown in the figure.
Focus Stopper
Zoom Barrel
Apply the adhesive bond (B-10)
Fig.4-5-2
SAL1680Z (Vario-Sonnar DT 3.5-4.5/16-80 ZA) (Vario-Sonnar T DT 16-80mm F3.5-4.5 ZA)
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