DC 4 -CMYK 'install cartridge' for all

[Toner Boy]

OK. Don't work on these much but it seems this might be one that is obvious or a common occurrance to anyone familiar with these.
All 4 toners requested for install at the same time.

[TechMate]

Hi! can you please be more specific on the DC model? Thanks

[Toner Boy]

DocuColor 4

[TechMate]

Hi. Take out all 4 cartridges and try to reload them again. (1) it may not have been inserted correctly; (2) it may be nearing its end-of-life; (2) it maybe defective; or (4) it's not genuine, its a 3rd party consumable. In any case, replace all 4 as necessary with a genuine cartridge. Thanks