Sony SAL75300 Service Manual page 44

4) Adjust the back washer thickness according to the result of step 3). (Refer to Table 4-4-2 and Fig.4-4-5.)
Note:
Use the micrometer gauge (or slide gauge) to measure the back washer thickness.
If focus error is a negative value: Decrease back washer thickness by error amount to increase flange back.
If focus error is a positive value: Increase back washer thickness by error amount to decrease flange back.
5) Calculate the adjustment washer thickness using the following formula, and replace the adjustment washer.
(Refer to Table 4-4-2 and Fig.4-4-5.)
Coupler adjustment washer thickness = Back washer thickness - 0.25 mm
Back washer
A
B
C
D
E
Back Washer
6) Install the back washer and coupler adjustment washer, and perform "4-4-1. Flange Back (f'F) Check" again.
SAL75300 (4.5-5.6/75-300) (75-300mm F4.5-5.6)
Parts No. T (mm)
2-698-455-01 0.05
2-698-456-01 0.07
2-698-457-01 0.1
2-698-458-01 0.2
2-698-459-01 0.5
A
B
Fig.4-4-5
Coupler adjustment washer
A
B
C
D
E
Table 4-4-2
Coupler Adjustment Washer
A
B
4-15
Parts No. T (mm)
2-684-057-01 0.05
2-684-058-01 0.07
2-684-059-01 0.1
2-684-060-01 0.2
2-684-061-01 0.5