Look inside the printer. Confirm there is no paper or other obstructions that would prevent the toner cartridge from installing completely.
4
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.
5
If the toner cartridge appears to be fine, reinstall the toner cartridge. Confirm that the cartridge is installed fully.
6
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.]
Service action
Try performing the suggested actions below before replacing parts on the printer. If you cannot get to the printer to test it, replace the front door sensor.
Note: The front door sensor cannot be ordered as a separate part. To get a replacement front door sensor, you will need to order the left operator panel hinge assembly [Part number: 40X4396]
StepAction
1
Check the condition of the toner cartridge before replacing any parts on the printer. Confirm that the tab on the left-hand side of the toner cartridge is not damaged or broken. See the Recommended actions table above for detailed information.
2
If the toner cartridge appears to be fine, check the condition of the front door sensor. To check this:
- Power off the printer and open the upper front cover.
- Look on the left-hand side hinge for a small metal tab.
- Confirm that there are no obstructions or other debris lodged above the tab. Note: If the tab is missing or broken, the sensor will need to be replaced.
3
If possible, test the front door sensor before before sett ing up a service action. To do this:
- Reinstall the toner cartridge.
- Enter the printer's Diagnostics menu [press and hold the down arrow and right arrow buttons on power up] and run a sensor test on the front door sensor.
- As you open and close the cover, the sensor reading should switch between Open and Closed. If the sensor does not change, replace the sensor.
Note: If the sensor seems to be working correctly, test the printer with another toner cartridge or contact Lexmark Technical Support for additional support.
4
If the error continues after continues after replacing the sensor, please contact your next level of support for further assistance.
LEGACY ID: SO4787
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