Read Sony SAL20F28 Service Manual online
HELP
SAL20F28 (2.8/20) (20mm F2.8)
HELP10
Adhesive bond (B-10):
J-6082-612-A
Anti-diffusion agent (A-20): J-6082-611-A
1.
Attach the seven aperture blade unit to the aperture unit holding ring.
Note:
Attach the aperture blade unit in fully opening state.
2.
Attach the aperture blade unit.
3.
Apply anti-diffusion agent (A-20) to the instruction portions of the inner barrel.
4.
Attach the inner barrel to the aperture blade unit assembled in step 2 while fitting the pin of the aperture operation plate unit to the
longitudinal hole.
5.
Place the inner tube block assembled in step 4 up side down.
6.
Move the aperture blade unit so that the clearance between the pin of the aperture operation plate unit and the edge of the longitudinal
hole of the inner barrel may become around 1 mm.
7.
Attach the aperture unit holding spring, and check the operation of the aperture blade.
Note:
When attaching the aperture unit holding spring, insert the portion B first.
8.
After the aperture diameter adjustment is completed, apply adhesive bond (B-10) to the instruction portions of the aperture unit
holding spring.
Apply the anti-diffusion agent(A-20)
(All circumference)
(All circumference)
Apply the anti-diffusion agent(A-20)
(All circumference)
(All circumference)
Inner Barrel
Inner Barrel
Aperture Operation Plate Unit
Aperture Unit Holding Ring
Portion B
Aperture Unit Holding Spring
Pin
Longitudinal hole
Inner Barrel
Apply the adhesive bond(B-10)
(Three areas in the width of 5 to 10 mm)
(Three areas in the width of 5 to 10 mm)
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