
Using the operator panels
Invalid engine code
Light sequence:
• Ready / 
• 
Secondary light sequence:
Press  twice quickly to see the secondary light sequence.
 twice quickly to see the secondary light sequence.
•Ready / 
| • | Load / Remove  | Primary light | Secondary light | 
| • | 
 | sequence | sequence | 
Message:
The internal engine code has not been programmed, or the programmed code is not valid.
Solution:
Download valid engine code.
Not ready
Light sequence:
•
•Ready / 
• 
Message:
Printer is not ready to receive or process data, or the printer port is offline.
Solution:
•Press  to return to Ready or Busy state.
 to return to Ready or Busy state.
•Press and release  to cancel job.
 to cancel job.
•Press and hold 





















































 to reset printer.
 to reset printer.
Printing font list or menu settings page
Light sequence:
Ready / 
Message:
The font list or menu setting page is being printed.
Solution:
Wait for message to clear.
Overview of the Lexmark E120n operator panel
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