Lexmark T420 User Reference page 104

Load tray 1 or tray 2
What this light sequence means:
The printer is trying to feed paper from a source it detects is empty,
or the print media did not feed properly.
What you can do:
• Load print media in the source, and then press and release
Continue.
• Press and release Cancel to cancel the print job.
• Press and hold Cancel to reset the printer.
Print media jam
What this light sequence means:
The printer detects a jam.
What you can do:
• Press and release Continue twice quickly to display the
secondary jam error code.
• Clear the entire paper path.
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