Sony SAL75300 Service Manual page 53

2. Focus Brush Position Adjustment
1) Set the focus position to infinity end.
2) Loosen the two screws fixing the encoder brush.
Reference position of brush
Fig. 4-8-6
3) Perform the "4-8-1. Focus Brush Position Check", and adjust the encoder brush position until the OK (Green) indicator of "Position"
lights.
Fig. 4-8-7
4) Tighten the two screws loosened in step 2).
3. Pattern Check
Note:
When the NG (Red) indicator of "Position" lights during checking, does not care about it (It is normal performance).
1) Turn the focus ring slowly from the near end "Focus Pattern : 1" to the infinity end "Focus Pattern : 28" and check that the value of
"Focus Pattern" change from 1 to 28 continuously.
2) Turn the focus ring slowly from the infinity end "Focus Pattern : 28" to the near end "Focus Pattern : 1" and check that the value of
"Focus Pattern" change from 28 to 1 continuously.
[Exit]
3) Click the button.
[End]
4) Click the button to terminate the lens adjustment program.
5) Turn the POWER switch of the camera to OFF.
6) After the pattern check is completed, apply the adhesive bond (B-10) as shown in Fig. 4-8-9.
Apply the adhesive bond (B-10)
Fig. 4-8-9
SAL75300 (4.5-5.6/75-300) (75-300mm F4.5-5.6)
Two screws
h h h
h h
Fig. 4-8-8
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