Part of Sumitomo Electric Lightwave's How -To video series. This guide provides a thorough introduction to Preventative Maintenance for Sumitomo Electric's Q502S Fusion Splicer. For product information, visit https://sumitomoelectriclightwave.com/product/q502s-active-clad-alignment-fusion-splicer/. For additional information, please visit the SEL website: www.SumitomoElectricLightwave.com.