Lexmark x544 duplex problem - Lexmark X544n All-In-One Laser Printer

you could start on page 168 of the manual. I don't like to type everything there. In the end you still have to read it.
Use a PDF reader like adobe acrobat reader (free on the net) to read this:

http://www.lexmark.com/publications/pdfs/2007/x54x/v5404678_en.pdf

check the manual. It is still online http://www.lexmark.com/publications/pdfs/2007/x54x/v5404678_en.pdf

Hi,

I jsut followed the instruccion with a Lexmark X544 but i cant see the "Reset Maintenance Count". I could get de CONFIG MENU by holding the /check) and (right arrow). I move in the menu but none of the lines is anything related to "Reset Maintenance Count"

In output between rollers you have a plastic parts wich moves. They are the output bin sensor. Maybe are stuck, see if moves.

You will get this message if the imaging unit needs replacement. Please visit the link below to view the video and the instructions on how go about the replacement.

http://bitly.com/LlSDe5

For further assistance, please contact Lexmark Technical Support.

Please try to download and install the custom driver (hostbased driver) which is available from support.lexmark.com websites.

For further assistance, please contact Lexmark Technical Support

THIS PAGE may give you more information about this Lexmark error code.

SMTP is the outgoing mail server. If you're getting a error on the smtp gateway, please verify with email provider and check what is the correct outgoing mail server

For further assistance, please contact Lexmark Technical Support

Download the X544N device-drivers from the manufacturer's web-site:

http://support.lexmark.com

and install the device-driver.

The following link has Lexmark support and troubleshooting steps regarding "Error 900" for X54x:

Lexmark X544 Error 900

I hope this information is helpful.