Magenta color still not working but no notice is given. Other colors work.

Replace the color cartridege maybe its damage.

Assuming that you have ink for any color, the problem can either be clogged print-head or an electronic (board) failure no longer controlling a color/colors.

The linked procedure may help:

Dirty mirrors will gives you dull color images..It seems color combination faulty..
chk original cartridges installed? or refilled cartridges?
Take supply status page..
chk colors..If color is dull(light) clean laser scanner assembly mirrors.
Do the color calibration..
chk drivers.,
Print from other file..

This model printer has only two slots for ink cartridges. One is for a black ink cartrigde and the other is for a tri-color cartridge which contains cyan, magenta and yellow inks.
This tri-color cartridge has run out of yellow ink, you need to replace this tri-color cartridge.

The magenta cartridge isn't working correctly. This is why you're only getting the other colors (blue is cyan, green is cyan and yellow, and then yellow).

Try removing and reseating the magenta cartridge. If that doesn't work, use a new magenta cartridge (the cartridge itself may have been defective).

I wasn't able to view a manual for this machine, as it's been discontinued and Lexmark no longer offers the PDF on it. If you have a "clean print heads" option, use it. It may require more than one try. If you don't have that option, then all possibilities have been covered.

Hope that's helpful.

First run the CLEAN HEADS and see if that helps. If you don't use your printer at least once a week the Print Heads get dried out and will not allow the ink to pass through to the paper.
Go to control Panel and click on Printess. Then when the window comes up, CLICK on Properties TAB and then in the next window, CLICK on CLEANING.
You may have to replace your PRINT HEAD if that doesn't work.
Hope this is of some help. Bud

This happens due to Laser sCANNER Contamination.

Light Output that typically starts fading along the outside edges of the media. The first noticable color would be Magenta.

Dusty Environments can lead to Laser Scanner Contamination. The dust layer on the mirrors prevents proper transmission of the laser output in the imaging system leading to faded colors on the printed page. The initial stages of this failure typically occur in the magenta or yellow color planes as faded or light color. Often the left side is more faded than the middle.

You may need to contact the nearest Authorized Service Tech and get teh Laser Scanner replaced with the new released service part that has a mirror in a location where the dust ideally cannot reach eazily.

Also, please ensure that the printer is relocated from the current location to a more dust free zone.

1.Try placing sheet of Magenta print on copy board, and run many copies .  Run head clean after about each 50 sheets. 

Yes, you will replace the whole cartridge. Open the front door and pull out the cartridge drawer. Grab the handle for the magenta and pull it straight up. There should be directions in the box.

i cannot print anything