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Sony SAL1870 Service Manual page 44

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8)
Adjust the back adjustment washer thickness according to the result of step 7). (Refer to Table 4-4-2 and Fig.4-4-7.)
Note:
Use the micrometer gauge (or slide gauge) to measure the back adjustment washer thickness.
If focus error is a negative value: Decrease back adjustment washer thickness by error amount to increase flange back.
If focus error is a positive value: Increase back adjustment washer thickness by error amount to decrease flange back.
9)
Change the coupler adjustment washer thickness to the back adjustment washer thickness. (Refer to Table 4-4-2 and Fig.4-4-7.)
Coupler adjustment washer thickness = Back adjustment washer thickness
Back adjustment washer
A
B
C
D
E
Back Adjustment Washer
10) Install the back adjustment washer and coupler adjustment washer, and perform "4-4-1. Focus-shift/Flange Back (f'F) Check" again.
11) After the adjustment is completed, apply the adhesive bond (B-10) to the position shown in the Fig.4-4-8.
Two screws
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
Parts No.
T (mm)
2-683-648-01
0.05
2-683-649-01
0.07
2-683-650-01
0.1
2-683-651-01
0.2
2-683-652-01
0.5
Coupler Adjustment Washer
Fig.4-4-7
Focus Ring
Focus Stopper
Apply the
adhesive
bond (B-10)
Fig.4-4-8
Coupler adjustment washer
A
B
C
D
E
Table 4-4-2
4-15
Parts No.
T (mm)
2-683-641-01
0.05
2-683-642-01
0.07
2-683-643-01
0.1
2-683-644-01
0.2
2-683-645-01
0.5

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