Magenta & Yellow lines

Replace the black drum and developer unit along with the magenta (P-7) and yellow (P-8) image units and Transfer belt (P-21)

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Hello,If they are vertical lines then the most common reason for this is that containers for the waste toner of the magenta and yellow cartridges are full. This is not a common problem if you use original HP cartridges, but if you use compatible or refilled cartridges it happens. If you get the magenta and yellow cartridge out and look at the the green OPC drum you would see these 2 lines. You can carefully shake the cartridges 5-6 time HORIZONTALLY and the problem will probably disappear for a couple of pages. If this happens then you must replace the magenta and the yellow cartridges. Post back results here. Hope this helps

Hello,
you have to replace toner cartridges (unfortunately).
Same problems can be occured whit CP 1025 too
the problem is - cartridge image drum failed
Good luck!

The narrow pink line is coming from your magenta toner/drum cartridge. You may be able to open the from cover and look at the 4 toners. If you look at the magenta (like pink) cartridge, you might see the thin line on the drum surface.
The multicolored band that sometimes shows up on your prints is most likely the transfer belt unit. This is caused by an area of the belt that is not being cleaned very well. This probably tends to show up when you are running mutilple prints of a page.
So it looks like to may need to replace your magenta toner and look at getting a transfer belt unit.

The yellow and magenta image units may be the problem. Yellow may have worn out on one end causing the yellow line. If the pink dots show up on every page but move around from page to page, there may be damage to the magenta image unit. You can remove the image units from the machine and look at the drums (long green cylinders), this should be shiny and clean. If not, you may need to replace.

Either the ink you are using is not going to give the color you want, or you have print heads that are blocked.

the problem is not with the printer but it is with the ink that might be damaged, this is located inside the printer

1. Thy cleaning, test page, check Magenta and Yellow ink levels, try changing Yellow and Magenta and make sure they are OEM (Brother Genuine)

Hope that works, if not write me back before leaving feedback

Mitch
P.S. Don't forget to leave feedback

sounds lke your yellow nozzle not working properly...had same issue on lexmark printer, ended up geting this epson...learnt from my mistakes...perhaps it ran dry? or you left the yellow cartridge out longer than the rest....only you might know what happened

change your magenta led it sounds like that may be faulty big job if not theat then its a new rip baord which is under the cover