4-ENGLISHBefore replacing the projection lensReturn the projection lens to the home position before replacing or removing it.For details on how to return the lens to the home position, refer to the operating instructions of the projector.Attentionz Make sure that the projector power supply is switched off before attaching or detaching the projection lens.z After removing the projection lens, store it safely away from vibration or impacts.z Before attaching the fixed-focus lens, remove the protective film from the light projecting surface and the lenscap from the lens.z Be sure not to touch the light projecting surface or the surface of the lens. Any fingerprints or smudges onthese surfaces will be magnified and lower the quality of the image displayed on the screen.z The light projecting surface and lens are made of glass. The lens could be damaged if brought into contactwith or rubbed against hard objects. Handle the lens carefully.z Use a clean, soft and dry cloth to wipe away any dirt or dust that has adhered to the light projecting surface or lens.Do not use fluffy cloths containing oil, water or dust for cleaning.z When the fixed-focus lens is removed from the projector, place it with the light projecting surface facingupwards.Attaching the Lens / Detaching the LensBefore Use Supported projectorsPT-DZ21K / PT-DS20K / PT-DW17K / PT-DZ16K / PT-DZ13K / PT-DS12K / PT-DW11K / PT-DZ10KNotez Models other than the above may also be supported. Refer to the operating instructions of the projector you are using.z In this document, the alphabet letters at the end of the projector part numbers are omitted. Supplied AccessoriesMake sure that the following has been provided. Numbers enclosed in < > show the number of accessories.Lens cap <1> Lens shift gauge <1>DZ13K/DZ10K/DS12K/DW11KSDZ985C/SDZ981C/SDS955C/SDW935CDZ21K/DZ16K/DS20K/DW17KSDZ21KC/SDZ18KC/SDS20KC/SDW17KC(The product isdelivered with a lenscap attached.)Lens surface Light projecting surfaceLens capprotective film