Even you turn off then turn on the calculator, the 'E' still there? As I know, when 'E' display, if any key is stuck (press the key and it never pop up), all other entries will be ignore, until u release the key stuck. And, please confirm the printer is not stuck.
I am very familiar with this problem..a transistor is bad on your logic board... this is replaceable.. I can do this...608-222-2484...
We repaired many Monroe 7130...this could be logic problem..maybe something on the logic bd. ...coke , coffee, etc. etc. staple, paper clip.. but in all probably you may have a printer gone bad.. You can always shake your cal to see if you have dropped anything on the logic bd... but always turn your machine off before you do this...this problem has happened only once or twice..we would try a another printer unit and isolate if it was a logic or printer and go from there...good luck 608-222-2484
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