Summary: My display on my printer reads "Data Exist" and the printer will not print, why?
This message means that your laser printer has received some data that does not specify where the end of the page is. Therefore it prompts you that it has Data in it's buffer and does not know what to do with it. You should press the FF key on the front of your printer. This puts in a Form Feed command at the end of the data so the printer will print it. If you have Auto Continue on your model printer should timeout and print it anyway eventually. If the Data Exist message continues to happen check your software.