How do i clean the iris blades?

This is for Sanyo VPC-HD1, VPC-HD1A black screen problem how to clean auto iris unit.First you have take apart camera : remove 4 screws from right side (in battery compartment) 2 screws from bottom, 2 screws from top (there are different short one is from rear) and last screw from front, now pull left cabinet from top and take appart.Be carefull !!! there is flash capacitor you need to discharge it before doing anything else.You can discharge with  1Kom 5watt resistor . After that remove 1 screw holding speaker, disconnect and remove speaker.Now pull power board PW-1 there is a screw holding lense ring remove that screw, disconnect 2 connectors from lense assy (from ccd just pull, from lense unlock and pull flat cable now you can remove lens assy. Next remove 3 small screws holding heat sink (rear of lens assy) after that remove spacer (black tape from top of lense and another small tape at rear top of lense. Now you can see 7 white screws and 1 black screw remove all of them.Black screw holding iris unit.Now carefully lift zoom motor focus motor 2 sensors nd filter assy and iris unit they came out all together.Next thing main thing you have to open iris unit it is easy to do with sharp blade on the edge of iris unit you will find 2 locks holding  metall casing of iris unit put blade between metal and plastic case and pry to remove metall case. Now you will find iris 2 blades there are different you need to remember wich is wich.Now carefully remove both blades (they might stick to each other because of grease) and place them into isoprophyl alcohol after that put them on to napkin fold napkin so blades are inside and dry them you also need to clean iris unit where blades are going from grease and also clean zoom motor and focus motor shafts to remove grease. Now put everything back together and i hope you can do that. Good luck.