Lexmark T420 User Reference page 103

Programming network code
What this light sequence means:
The printer is programming new system code.
What you can do:
Wait for the message to clear.
Warning: Do not turn the printer off while this message is
displayed.
Load the multipurpose feeder
What this light sequence means:
The printer is waiting for you to load print media into the
multipurpose feeder.
What you can do:
• Load print media in the multipurpose feeder, and then press and
release Continue.
• Press and release Cancel to cancel the print job.
• Press and hold Cancel to reset the printer.
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