In most cases, problems are solved by checking these 3 basics:
1. Are the correct batteries being used? - Batteries might be low - it is advised to use only Duracell Alkaline batteries with DYMO machines - DYMO machines will not work with Carbon type batteries - All batteries used in the machine should be of the same brand - Old batteries should not be used in combination with new batteries
2. Is the print head clean? Clean the print head with the special brush delivered together with the labelmaker or a cotton bud and a soft solvent (e.g. alcohol).
3. Is the cassette correctly positioned? Push the cassette firmly into the compartment in order to make sure it fits at the bottom of the cassette compartment.