KM bizHUB 421 has Horizontal lines on all prints/copies ???

[gerryhuerta]

So this machine is giving us horizontal lines accross each copy or print. Just about 2-months (28k prints) ago we replaced the entire drum unit but the tech DID NOT reset the drum counter. Up until recently we had been getting foggy background on the drum followed by the well known C-2801 TCR output Errror.


We have reset the C-2801 error but now we are getting these horizontal lines (like attached) what should be my next step..? We are posting here just before thinking to replace Developer????

Thanks for all your help.

[Shadow]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

check the cleaning auger and gear drive for the drum unit.
it looks like its packing up because there is a broken or damaged gear.

[Synaux]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

check the cleaning auger and gear drive for the drum unit.
it looks like its packing up because there is a broken or damaged gear.

Perhaps a damaged tranf belt gear too?

[minimerlin]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

Looks to me like either a dirty grid or drum or grid charge is incorrect due to count not being reset. Did you change the drum when you changed the drum assembly? Have a look at the settings on the machine.

[mo0651]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

Clean or replace the main charge wire and the transfer/ sep wires.

[gerryhuerta]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

All this is very helpful.. On my way with parts rightnow to check this out. Will update you soon Thanks again to all...

[blackcat4866]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

Looks to me like either a dirty grid or drum or grid charge is incorrect due to count not being reset. Did you change the drum when you changed the drum assembly? Have a look at the settings on the machine.

Clean or replace the main charge wire and the transfer/ sep wires.

I'm with minimerlin and mo0651. The lack of crisp edges on these lines, the way they waver, and the way they peter out indicate to me that there is lint in the primary grid or on the charge wire. =^..^=

[nmfaxman]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

I am thinking Blade flip.
Run 10 sky shots and see if it goes away, or turn the drum unit by hand and see if you get the marks.
Charge arc would not leave a set interval and a broken gear would happen more often.

Just my thought.

[gerryhuerta]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

I'm with minimerlin and mo0651. The lack of crisp edges on these lines, the way they waver, and the way they peter out indicate to me that there is lint in the primary grid or on the charge wire. =^..^=

minimerlin and the rest of you where correct. The charge grid wire was dirty and needed simple cleaning.. The original error threw us off in the wrong direction but I still dont know how we missed that.. Thanks to all...

[blackcat4866]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

Congratulations. =^..^=

[Synaux]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

minimerlin and the rest of you where correct. The charge grid wire was dirty and needed simple cleaning.. The original error threw us off in the wrong direction but I still dont know how we missed that.. Thanks to all...

Glad to hear you got it sorted out

[brent]

Re: KM bizHUB 421 has Horizontal lines on all prints/copies ???

glad you got it. this machine is easy to see that. corona wires and grid.
glad you got it fixed
brent