- 50 -AAAA AA18 Optical Filters and Lenses removal.1. Remove Optical filter (UV/IR), remove the Condenser lens (IN), remove the Condenser lens (OUT), remove the Relaylens (IN), remove the Optical filter (UV cut), remove the Condenser lens (R-FIL), remove the Condenser lens (UV-FIL), andremove the Condenser lens (G) upward.Note : Do not touch optical filters and lenses surface directly with hand.Mark the mirrors as they are removed from the optical unit so that they may be reassembled in the location anddirection from which they were removed.19 Optical base BTM disassemblies.1. Remove 6 screws-A, remove the Optical Base BTM-A and the Optical Base BTM-B disassemblies.Lens condensor (UV / FIL)Optical base BTM-AOptical Unit disassembliesOptical base BTM-BLens condensor (OUT)Lens condensor (G)Lens condensor (R-FIL)Optical filter (UV / IR)Lens condensor (IN)Lens relay (IN)Lens relay (IN)Arrow mark comesthis figure.