Sony SAL20F28 Service Manual page 18

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.
2
3
SAL20F28 (2.0/28) (20mm F2.8)
Hole for Coupler
Lens Mount Riveting Block
Coupler
Aperture Operating Plate Unit Pin
4
1
HELP