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2-1-10. IRIS RING REMOVAL/INSTALLATION
Removal Rotate the iris ring clockwise, and remove it at the stop position (iris-in end). (Fig. 10-1) At this time, do not rotate the iris joint gear of the Aperture Unit. Installation 1. With the Aperture Unit set in the charge position (see "2-1-12. 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. (Fig. 10-1)
Optical Axis Center
Iris Joint Gear Shaft Iris Ring
Punch Mark
Fig. 10-1
2-1-11. APERTURE UNIT INSTALLATION
*The Aperture Unit is supplied by being set in the charge position (initial position), but if this position is disordered when the Aperture Unit is removed, or if the charge position is to be set again, perform as follows. *Refer to �2-1-12. Aperture Unit Charge Position Setting� for the confirm method at the charge position.
2-1-12. APERTURE UNIT CHARGE POSITION SETTING
1. Check that the Aperture Unit is in a free state. 2. After confirming that the Aperture Unit is in a free state, rotate the gear by 3 turns. 3. After rotating the gear by 3 turns, set the Aperture Unit where the holes in the gear and the Aperture Unit coincide. This position is the charge position. *Refer to �2-1-13. Aperture Unit Free Position Setting� for the setting and the confirm method at the free position.
