DSLR-A500, DSLR-A550 - Sony Digital Camera Service Manual (repair manual). Page 24

DSLR-A500/A550_L2

3-3

#166: M1.7 X 3.0 (Tapping) 
 (Silver)
 3-271-395-11

3.0

1.7

#23: M1.7 X 4.0 (Tapping)
 (Black)
 3-080-204-11

4.0

1.7

#23: M1.7 X 4.0 (Tapping)
 (Black)
 3-080-204-11

4.0

1.7

5.5

2.0

#163: M2.0 X 5.5 (Tapping) 
 (Silver)
 2-695-575-11

3.0

1.7

#165: M1.7 X 3.0 (Tapping) 
 (Silver)
 2-695-434-31

2

3

5

1-16. A Mount Lug Plate (UR)

1-17. A Mount Lug Plate (UL)

1-20. Lens Lock Unit

1-18. AF Coupler, AF Coupler Tension Spring

AF Coupler

1-19. Coupler Lever

∗ Tighten six screws in order of the number. 

1-21. Ring Roller (A), Iris Ring
1. With the Aperture Unit set in the charge position (see "1-14. Aperture 
  Unit Charge Position Setting" ), install it on the front frame set.
 

∗ The Aperture Unit has been set in the charge position, if it is not 

  removed.
    However, the iris ring must be in the removed state (where the iris 
    joint gear is not rotated).
2. Install the iris ring with it's a punch mark aligned with a line that 
  connects the iris joint gear shaft and the optical axis center.

1-24. Ring (SP), Mount Spacer, H Mount

H Mount

Mount Spacer

Ring (SP)

1-22. Ring Roller (B), Ring Roller (C), Ring Roller (C) Shaft

1-23. Lens Lock Button, Lens Lock Pin, Lens Lock Spring

1-25. Coupler Joint Lever

Coupler Joint Lever

Lens Lock Button

Lens Lock Pin

Lens Lock Spring

Claw

Claw

Optical Axis Center

Ring Roller (A)

Ring Roller (A)

Iris Ring

Iris Joint Gear Shaft Punch Mark

Boss

Boss

AF Coupler Tension Spring

∗ Note the direction. 

1

4

6

Soldering

Lens Lock Unit

Boss

Claw

Coupler Lever Shaft

Coupler Lever

Lever Adjustment Screw

Claw

Boss

Claw

Boss

Screw

Claw

- Top View -

Claw

Screw

- Back View -

- Front View -

- Front View -

- Right View -

Ring Roller (B)

Ring Roller (B)

Iris Ring

G G-85

Ring Roller (C)

Ring Roller (C)

Ring Roller (C)
Ring Roller (C) Shaft

Ring Roller (C) Shaft

Ring Roller (C) Shaft

Iris Ring

G G-85

Screw