Sony SAL20F28 Service Manual page 19

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.
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.
Aperture Unit Holding Spring
Portion B
SAL20F28 (2.0/28) (20mm F2.8)
Apply the anti-diffusion agent(A-20)
(All circumference)
Apply the anti-diffusion agent(A-20)
(All circumference)
Inner Barrel
Aperture Operation Plate Unit
Aperture Unit Holding Ring
Apply the adhesive bond(B-10)
(Three areas in the width of 5 to 10 mm)
Inner Barrel
Longitudinal hole
Pin
HELP