HP Color Laser Jet Pro M452dn Printing Issue

[impedance1976]

HP Color Laser Jet Pro M452dn (Product # CF389A). Purchased in February, 2017. Total pages printed equals 22,134. Each page prints with the same black vertical lines. Please refer to attached.  Can you tell me what the problem is and what solutions are available? Thank you.

HP CLJ Pro M452dn

[Repairatrooper · Accepted solution]

That type of defect is usually caused by a failed black cartridge. Your first step is to try a different black cartridge.

[impedance1976]

Your solution worked; no more black lines. You have saved me buying a new printer. Thank you very much!!! I replaced the existing black toner cartridge (not HP) with a new HP black toner cartridge (part# CF410A).

With my initial post/question, I attached a printout from the HP M452dn printer. If you look closely at the right hand side you can see magenta stripes similar to the black vertical stripes. Therefore, I assume replacing the magenta toner cartridge would resolve that issue. Do you agree? 

[Repairatrooper]

Yes replacing the magenta should get rid of the line. If you remove the magenta cartridge and look at the blue/green drum on the bottom you will likely see excess toner on the drum that corresponds to the defect.

[impedance1976]

Replacing the magenta worked. Thank you very much again!