Inconsistent Streaking on prints - Photos attached

**weskes** · 04-18-2017

Hi all, I just as of a few hours ago have started getting these magenta streaks on my print it's not a hard line like i would expect from a cleaning blade having a clump stuck somewhere and don't see anything strange with the belt, drum, corona or developing unit. The streaks are the same direction as the paper feed and it only noticeable on light coverage, they don't streak past the printed image and don't stay in the same place every time, and maybe 1/4 of the prints come out looking OK, i have attached samples that show the streaks... also darker or heavier coverage prints look just fine Any help would be appreciated. Thanks in advance!
20170417_212956.jpg 20170417_212938.jpg 20170417_212944.jpg

**JDR** · 04-18-2017

Your magenta drum unit is dead.

**weskes** · 04-18-2017

Originally Posted by JDR

Your magenta drum unit is dead.

Out of curiosity do you know why or what causes this to happen when the drum unit dies? I was looking thinking I might see something at the cleaning blade but now luck... Will try a new drum in the AM for sure either way.

**JDR** · 04-18-2017

i would say corona, never really looked for that.

**weskes** · 04-18-2017

Originally Posted by JDR

i would say corona, never really looked for that.

I thought you just suggested it was the drum though?

**JDR** · 04-18-2017

the drum unit, the whole assembly.
theres no other orderable parts in this unit.

**weskes** · 04-18-2017

Anyone else have any ideas before I open up a new drum?

**darry1322** · 04-18-2017

Replace the magenta image unit.

You didn't give a model number so I assume unit rather than just drum.

**weskes** · 04-18-2017

Originally Posted by darry1322

Replace the magenta image unit.

You didn't give a model number so I assume unit rather than just drum.

Whoops sorry, didn't give a model but it was a KM c6500 - just went in and compressed air the drum with the toner waste area held open, blew out a ton of old toner also cleaned everything around the erasure lamps and corona and seems to be great now!

**darry1322** · 04-18-2017

Dirty coronas and old drums give similar output. Sometimes cleaning the coronas will solve the issue for a while. If cleaning coronas doesn't work then it's time for a new drum.