Table A-2 List of Printer Warnings ESC/Label Command List Appendix for CW-C4000 Series Rev. C Page 3 Definition Range Value Warning Description IC1 Cyan ink cartridge low warning IM1 Magenta ink cartridge low warning IY1 Yellow ink cartridge low warning IK1 Black ink cartridge low warning MNF Maintenance box near full warning NSU Nozzle check disabled WSC Service call warning WNC Nozzle clog warning