Sony SAL35F14G Service Manual page 58

4-5-2. Flange Back (f'F) Adjustment
1) Perform "4-5-1. Flange Back (f'F) Check" and confirm that the flange back value (f'F) of lens is out of specification of Table 4-5-1.
2) Adjust the lens focus to the infinite.
3) Observing the microscope, adjust the focus by turning the knob of flange back tester.
4) Calculate the shift amount (x) by formula below.
Shift Amount (x) = f'F (measured value) at infinite - 44.60mm
x: Shift amount to be adjusted by backwasher
5) Depending on the result in step 4), adjust the thickness of backwasher. (Refer to Table 4-5-2.)
Note:
Measure the thickness of backwasher with micrometer or calipers.
• When the shift amount (x) is the positive (+) value: Increase the thickness of backwasher by a value of x.
• When the shift amount (x) is the negative (-) value: Decrease the thickness of backwasher by a value of x.
6) Build in the backwasher and perform "4-5-1. Flange Back (f'F) Check" again.
Specification
Focal-length
f (mm)
35
7) When the flange back (f'F) is out of specification of Table 4-5-2, repeat steps 2) to 6) again.
Part No. Description
2-684-123-01 BACK ADJUSTMENT WASHER A (t=0.05mm)
2-684-124-01 BACK ADJUSTMENT WASHER B (t=0.07mm)
2-684-125-01 BACK ADJUSTMENT WASHER C (t=0.1mm)
2-684-126-01 BACK ADJUSTMENT WASHER D (t=0.2mm)
2-684-127-01 BACK ADJUSTMENT WASHER E (t=0.5mm)
SAL35F14G (1.4/35G) (35mm F1.4G)
f'F (mm)
(Infinity position)
44.58 to 44.62
Table 4-5-2
4-19