6.20 Removal of Iris Unit
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1. Remove the analysis Block according to the steps 1 through 7 in the section 6.10. "Removal of
Analysis Block and Projection Lens".
2. Unscrew the 2 screws and remove the analysis case (upper) while expanding the hook of it
outside.
Notes:
❍ Because the hook is damaged easily, be careful not to expand it excessively.
❍ The incidence polarizer (G) is installed in the analysis case (upper). Handle it with
care.
3. Unscrew the 2 screws and remove the iris unit with interlock switch.
4. Unscrew the 1 screw and remove the interlock switch.
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