6. Clean the inner side of the hood using the same kind of cloth, then close the hood.7. Clean the outside of the hood using the same kind of cloth.8. Put back the perforated metal sheet.Clean the build-unit housingThe following steps provide the complete procedure for this topic.1. Open the build-unit door.2. Vacuum the build-unit housing and its internal parts.Clean the exterior of the processing stationThe following steps provide the complete procedure for this topic.282 Chapter 11 Hardware maintenance