Sony SAL20F28 Service Manual ▷ View online
HELP
SAL20F28 (2.8/20) (20mm F2.8)
HELP06
Adhesive bond (LOCTITE 460) (Note)
Note:
Use adhesive bond (LOCTITE 460) or an equivalent article.
Do not use what becomes white after drying like quick-drying glue.
Anti-diffusion agent (A-20): J-6082-611-A
Grease (G-85):
J-6082-626-A
1.
Apply the adhesive bond (LOCTITE 460) to the stopper screw, and attach it to the lens mount riveting block.
2.
Apply the anti-diffusion agent (A-20) and grease (G-85) to the instruction portions of the lens mount riveting block.
3.
Attach the lens mount riveting block, and check the operation of the aperture blade.
Turn the cam ring unit, and check the movement of the coupler.
HELP07
Grease (G-80): J-6082-625-A
Grease (G-85): J-6082-626-A
Apply the grease (G-85) to the gear and the grease (G-80) to the sliding surfaces of the coupler.
Apply the anti-diffusion agent(A-20)
(All circumference)
(All circumference)
Apply the grease(G-85)
(3 claes)
(3 claes)
Apply the adhesive bond(LOCTITE 460)
Lens Mount Riveting Block
Apply the grease(G-85)
(Sliding surfaces)
(Sliding surfaces)
Apply the grease(G-80)
(Geare)
(Geare)
HELP
SAL20F28 (2.8/20) (20mm F2.8)
HELP08
Anti-diffusion agent (A-20): J-6082-611-A
Adhesive bond (B-40):
J-6082-614-A
1.
Apply the anti-diffusion agent (A-20) to the instruction portions of the outside barrel.
2.
Install the back adjustment washers.
3.
Attach the outside barrel so that the relationship of the preset ring pin and the hole for axis meet the position as shown in the figure.
4.
Turn the outside barrel clockwise, eliminating play, and tighten four screws.
Note:
After performing “4-4-2 Flange back (f’F) adjustment”, apply the adhesive bond (B-40) to the screwed portions of screws
and tighten screws.
Apply the adhesive bond(B-40)
Apply the adhesive bond(B-40)
Back Adjustment Washer
Apply the anti-diffusion agent(A-20)
(All circumference)
(All circumference)
Outside Barrel
Hole for axis
Preset Ring Pin
Ver 1.2 2007.05
HELP
SAL20F28 (2.8/20) (20mm F2.8)
HELP09
1.
Turn the iris control plate unit pin counterclockwise to close the diaphragm.
2.
Align the notch of the preset ring to the aperture operating plate unit pin, the hole for coupler to the coupler, and attach the lens
mount riveting block.
3.
Turn the lens mount riveting block counterclockwise, eliminating play, and tighten four screws in order as shown in figure.
1
2
3
4
Aperture Operating Plate Unit Pin
Coupler
Lens Mount Riveting Block
Hole for Coupler
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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