Cartridge error 50c (by 12 users)

I removed the color cartridge and left the black one. it worked.
(I have Lexmark X6100 Series)

I agree with teenix. I inherited this printer from a friend at work. It had been standing for a long time, thus the cartridges are more than likely dry. I bought a replacement black cartridge t see if it still worked and received the 'cartridge error 50C'. Tried TEENIX's suggestion (after many others) and it worked. My understanding... the "50C" error applies to both cartridges, so you have to try both. Any one fault will cause the error code, so try and work with the cartridge you know is OK and ignore the error for the other cartridge. My mistake was to try and remove all error codes even though I knew that the Colour cartridge was probably poked.

what i did
in my case i took of
the color cartridge and it prints black very very good
and he colour i must by new colour cartridge....lol...thats was all byeeeeeeeeeeeee

we bought this pinter 2nd hand, and the scanner worked fine, but printing was goofy-it would only print if it wasn't something that we had scanned in to the computer and it was always yellow or green. so we went and bought a BRAND-NEW black ink cartridge and it's been working. (we bought it less than a month ago) my printer has been working fine and my husband was in the middle of printing several pages when error 50c popped up on the screen (of the printer). i've been trying the different ideas online (from other people who have had the same problem) but they aren't working. if i go get the black refilled will that work, or do i have to go buy ANOTHER brand-new cartridge? let me know a.s.a.p! THANK YOU! rlievans@yahoo.com