Canon MF741CDW color lines on the side

[micaaronfl12]

I replaced my toner cartridge and now are getting these color lines on the side, only when I print in color. what is the fix? 

[Hector]

Hello Micaaronfl12,

The issue looks like a problem with the magenta toner cartridge. In this situation, you can reset the magenta and check if it is leaking. After reseating the toner, you can try cleaning the ITB and fixing assembly. If that does not resolve the issue, I would suggest replacing the magenta toner.