This video describes how the Samsung drum unit “chip“ works, and the method to reset a Samsung Drum Unit for laser printer. - Activate subtitles in your language - For any question or suggestion leave a comment. ----------------------------------------------------------------- email: link.accessori@libero.it other links: http://www.emmegiricambi.it/ http://www.samsung.com/it/consumer/pc-peripherals-printer/printers-multifunction http://store.hp.com/us/en/cat/printers http://www.brother-usa.com/printer/#.VuQbWOZghlw -----------------------------------------------------------------