Once you confirm that the inside of the printer is clear, check the toner cartridge. Confirm that the toner cartridge is not damaged.
Note: Pay close attention to a tab located on the left side of the toner cartridge. (See the images below.) This tab connects to the 'cover open' sensor. If yo u find this tab broken or damaged, test the printer with another toner cartridge. If this second cartridge corrects the issue, then replace the cartridge that has the broken tab.NOTE: Lexmark does not replace or provide warranty on toner cartridges manufactured by a third party, nor Lexmark cartridges that have been refilled or reworked by any company other than Lexmark. If a third-party cartridge is causing this issue, contact the point of purchase to have the cartridge replaced. Likewise, if the toner cartridge is a Lexmark cartridge that any company other than Lexmark has refilled or refurbished, contact the place where the cartridge was refilled to have it replaced.
Close the upper front cover and power on the printer. See if the printer comes up to the Ready screen.
- If the printer powers up to the Ready screen, try printing a few pages. If the printer works correctly, continue to use it. Pay close attention to the printer over the next few days to see if the issue returns.
- If the Close Door/Insert Cartridge error continues to occur on power-up, or if the issue returns shortly after use, then the sensor monitoring the cover may be malfunctioning. This will require a service call to correct the issue. Please contact Lexmark Technical Support for additional information. (See Contac ting Lexmark Technical Support below for details.)