The SAM4s SPS-520FT cash register was built for harsh food service envriorments and from time to time may require parts. If you are a DIY (do it yourself) owner we have all the parts you could ever use for this register. Remember that you should always unplug the register before attempting repairs and also to make a back up of your register before doing anything. If you are a customer of ours we offer a how to video of making a back up.