Please install the image unit correctly and close all doors

Are you using a 3rd party image unit???, if so get OEM there are chips on them that copier monitors. The image units are the units below the toner cart. which one is having the problem Y M C or Black, did you re chip them, bad idea. Replace them with OEM cartridge.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

DID Some one recently replace a color image unit? Was that image unit stored standing up? and placed directly into the machine.? Might have all the developer sitting at one end and motor can not turn. Pull out all the image units, shake each one along the axis of the unit to spread the developer over the entire length of each image unit, then re-install, open close front door to reset code, if the code comes back you might have a burn out color image motor, or on of the color image unit needs to be replaced replace all three, worse case the board that controls the motor was damaged. Store all Image units and toner length wise

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Release new transfer belt unit
• A new installation is not detected when a new transfer cleaner unit (image transfer belt unit) is installed. Remedy 1 Reinstall unit. 2 Check there is a short circuit in the fuse of the transfer belt unit. 3 Check the PRCB connector for proper connection and correct as necessary. 4 Change PRCB

Black image unit motor failure. First open the front door remove the black image unit not the black toner!!!. Take the image unit and shake it so as to spread out all of the developer & toner inside the image unit along the whole length of the unit. The reason for this is as not have all of the developer/toner all at one end and the motor trying to turn with all that at one end or the other. Never store image units or toner vertically!!!!!
Now reinstall the image unit. and close the door. Opening and closing the front door will reset the machine . If it comes back good chance bad image unit.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Main Motor failure to turn. Remove all the image units then shake each one side to side. What you want to do is spread the developer (Located inside the unit) along the entire length of the image units. BET a all the image unit was stored up & down, instead of flat, person just picked it up and installed it. All the developer was sitting at one end so the motor could not turn correctly. NEVER EVER STORE I/U UP/DOWN always flat!!! Open & close the front door to reset the code. If code comes back then you might have already burned out the motor, or worse case the Control board went bad. But first replace the image unit with a new one cheaper. Cheaper, then having a Technician come out to check the motor and control board.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

are these third party?????? if so get OEM cartridge the chip may be bad, mite try cleaning chip contacts with ispololy alcchol

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Sometimes just open the doors and closing them a few times will work its sensing somethings open ,Make sure all is closed you may have too reinstall drivers. start over read all directions sometimes we get burnt out on trying to get something going give it a break for a bit then try again. could be a firewall or anti virus cause problems to.

open front door then push the IU correctly then close the door and close the side door from your right side...

tis error means abnormal tonder density in the balck image unit take the blacke image unit out and shake it while holding it level and put it back in the machine to reset the error code leave the machine on and open then close the front door

Did you recently install new ink cartridges?
See below, or go here and enter your model # , choose tech support and search "change print cartridge" for detailed instructions with pictures.
Overview
This article provides general instructions on how to change the cartridges on Lexmark Inkjet and All-In-One printers.
Procedure
1 Ensure the All-In-One printer is powered on. No image.
2 Lift the scanner unit or access door (per right-hand image).
The cartridge holder will move to the center of the Inkjet or All-In-One.
3 Press down on the cartridge carrier latch to raise the carrier lid.
4 Remove the used cartridge. NOTE: If you are removing both cartridges, repeat the preceding two steps for the second cartridge. No image.
5 Remove the protective tape from the back and bottom of the new cartridge(s).
WARNING! Do not touch the gold contact area on the back or the metal nozzles on the bottom of the cartridges.
6a Insert the new cartridges into their respective carriers. The image at right illustrates inserting the color cartridge.
6b The image at right illustrates inserting the black cartridge.
7 Close the carrier lids so that they remain closed. See image above in Step 3. No image.
8 Close the access door or scanner unit, taking care to keep your hands out from underneath the scanner unit as it is being closed. No image.
9 On some All-In-One units, the control panel display will prompt you to load paper and print an alignment page. NOTE: The scanner unit must be closed before you can start a new scan, print, copy, or fax job. No image.
I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

How to Change the Cartridges on Lexmark Inkjet and All-In-One Printers ID: ENUS32244 Overview
This article provides general instructions on how to change the cartridges on Lexmark Inkjet and All-In-One printers.
Procedure

NOTE: These instructions are general, and your specific Inkjet or All-In-One may appear different than the pictures below; however, the steps are the same.
Step Action Image 1 Ensure the All-In-One printer is powered on. No image. 2 Lift the scanner unit or access door (per right-hand image).
The cartridge holder will move to the center of the Inkjet or All-In-One.

3 Press down on the cartridge carrier latch to raise the carrier lid. 4 Remove the used cartridge. NOTE: If you are removing both cartridges, repeat the preceding two steps for the second cartridge. No image. 5 Remove the protective tape from the back and bottom of the new cartridge(s).
WARNING! Do not touch the gold contact area on the back or the metal nozzles on the bottom of the cartridges.
6a Insert the new cartridges into their respective carriers. The image at right illustrates inserting the color cartridge. 6b The image at right illustrates inserting the black cartridge. 7 Close the carrier lids so that they remain closed. See image above in Step 3. No image. 8 Close the access door or scanner unit, taking care to keep your hands out from underneath the scanner unit as it is being closed. No image. 9 On some All-In-One units, the control panel display will prompt you to load paper and print an alignment page. NOTE: The scanner unit must be closed before you can start a new scan, print, copy, or fax job. No image. Still Need Help? If you require additional assistance, please contact Lexmark Technical Support. NOTE: When calling for support, you will need the machine/model type and serial number (SN) of your printer.
Please call from near the computer and printer in case the technician asks you to perform a task on one or both of these devices.