6f5f31d5_Printer_Error_Code_Information__Solutions
[Error Code] Error 940-943 Color Machines [Error Message] Toner Metering Cycle failure CMKY cartridge 940 = Cyan cartridge 941 = Magenta cartridge 942 = Yellow cartridge 943 = Black cartridge Toner metering cycle (TMC) is where the code and electronics in the printer sense an addition of toner in the cartridge developing area. If the printer is expecting a toner addition cycle but one is not detected, a 94x TMC Error is displayed. [Solutions] 
Check the toner metering cam on back of suspect cartridge. If not present check in printer. Replace defective cartridge. Check the TMC pin in the cartridge contact error for free non binding movement If pin does not move freely you may need to replace the contact assembly. Contact service person
Lexmark Printer Error Code Information
Solutions