Pleas use a dry clothe to clean the chip contact and reinstall the toner cartridge. 

• The CRUM (Consumer Replaceable Unit Monitor) chip contacts on the toner, or printer, might be damaged or dirty. These contacts are usually on the front edge of the toner and are easy to spot as they are gold colored.

  Make sure the gold colored contacts on both the printer and on the toner cartridge are clean (use only a dry cloth for cleaning purposes) and are not damaged.

  Figure : Gold colored contacts on the toner cartridge