Light yellow horizontal lines on C522

Sounds like a faulty toner cartridge. Are all the cartridges OEM?

It sounds as though you have a leaking toner cartridge. If you aren't using Lexmark brand toner, that is VERY likely.. nobody seems to be able to make a good compatible cartridge. Test by replacing it.

try to replace magenta , Yellow , CYAN

Please power off the printer. Remove all the toner cartridges. And then put them back in. Make sure you install the toner cartridges properly. After that power on the printer. Try printing again.

generally this is due to your ink cartrige not having enough of the cyan or yellow to produce accurate colors. that or the print heads need to be cleaned on the cartrige. you can clean them with a cotton swab and some rubbing alcohol.

if all else fails replace yoru color cartrige with a new one.

Remove the yellow cartridge. Pull back the shutter that covers the drum. Check to see if its covered with yellow toner. It should be fairly clean. You can pull another one and do the same to compare. If theres a lot of toner over it then the cartridge is bad.

A technique to improve print quality is to try and clean the cartridge nozzles. You may clean the cartridge by following the steps given below: 
1. Go to the "Lexmark solution center." This can be done by clicking on "Start," go to "Programs" and Lexmark printer group. Click on the "Lexmark Solution center." Next click on the "Maintenance" Tab.  2. Select "Clean and Fix Horizontal streaks."  Click on "Print". This will produce a printed page. 
The colors that you should see here are black, yellow, magenta (a reddish purple) and cyan (a dark sky blue). You should notice the diagonal lines above and below the solid horizontal lines. These diagonal lines should be solid from left to right with no gaps. 
If there are gaps in the lines or the print diminishes across the page, you should run the "Clean Print Nozzle" page a couple more times to try and clear it up. If you still have gaps at the top and bottom, you should "wick" the cartridges by following the steps given below: 
1. Please open the "Solution center" again and go to the "Maintenance" Tab.  2. Select "Install color/black cartridge" and remove the cartridge or cartridges from the printer.  3. Get a damp paper towel.  4. Set the ink cartridge right side up on the damp paper towel so that the ink nozzles are against the towel and hold the cartridge in this position for about 15 seconds.  5. Now wipe the print head (on the bottom where the ink comes out) across in one direction only (left to right) until it looks clean.  6. Next dab the cartridge on the towel to make sure that the ink is flowing.  7. Snap the cartridges back into the printer.  8. On your computer, select "Old Cartridge install."  9. Repeat the "Clean Nozzle Page" one more time. If this fails to address the problem the entire procedure may need repeating.

Probably the head.. sounds like magenta not firing Inkypete

first, if you refilled your toner, the printer will always tell you, that you are not using original toner and red light will blink. second, if printer tell you every time to replace different color, then you need to clean a chip reader and chips on toners. take out all toners and pc drum. under toner rack there is a chip reader, clean it with pressure air and reinstall

This is the problem with the cartridge if you brought original Lexmark cartridge you can get it exchanged as the cartridge is nay be defective and the cartridge comes with one year warranty...........................................