Lexmark CX421
Step 1
Check if the power cord is connected properly to the printer and the electrical outlet.
Copy or scan the document.
Is the scanner responding?
The problem is solved.
Go to step 2.
Step 2
Check if the printer is turned on.
Resolve any error messages that appear on the display.
Go to step 3.
Step 3
Turn off the printer, wait for about 10 seconds, and then turn the printer on.
Contact customer support.
Check for obstructions that keep the scanner unit open.
Are you unable to print continuously? Check the paper guide and tray configuration settings.