iR2000 drum issue

[iRC]

Customer has an iR2000, which leaves toner to about 1/4 of the drum surface. So it also affects the output quality.
I've replaced the drum with brand new one for the second time, but no luck. Those two drums lasted less than 1000 copies each. What could cause this?
The machine has about 85k in its meter.

[songela]

Re: iR2000 drum issue

Customer has an iR2000, which leaves toner to about 1/4 of the drum surface. So it also affects the output quality.
I've replaced the drum with brand new one for the second time, but no luck. Those two drums lasted less than 1000 copies each. What could cause this?
The machine has about 85k in its meter.

I think you need to be more elaborate. Is this 1/4 of drum surface along the drum width OR the circumference?

[iRC]

Re: iR2000 drum issue

I think you need to be more elaborate. Is this 1/4 of drum surface along the drum width OR the circumference?

Sorry, I forgot to mention that. The toner coated surface is 1/4 along the drum and the whole circumference of the drum cylinder. Starting at the backside of the machine towards the user. So every copy has a wide stripe at the whole top of the page.
Unfortunately I don't have a sample copy to attach right now.

[songela]

Re: iR2000 drum issue

1. Try to print REPORTS, if they are fine, then you may suspect something to be wrong with the CIS (or anything down the scanning system line) and you may try cleaning etc.

2. If same fault is common to both Copies and REPORTS, you may suspect the LASER, Drum, Dev. Assembly or the earthing of same items etc.

[iRC]

Re: iR2000 drum issue

1. Try to print REPORTS, if they are fine, then you may suspect something to be wrong with the CIS (or anything down the scanning system line) and you may try cleaning etc.

2. If same fault is common to both Copies and REPORTS, you may suspect the LASER, Drum, Dev. Assembly or the earthing of same items etc.

Issue occurs also with reports. At first I also thought that the cause could be the developing assembly. But shouldn't the stripes be white then? If dev assy is bad, then there should be no toner at those spots.
I don't think that the laser causes this, since the drum has toner stripes at those spots even if the machine is off.
It could be the earthing of the drum. I'll check that next week.

[iRC]

Re: iR2000 drum issue

Is the customer using genuine toner?

Yes, the toner is genuine Canon.

[teckat]

Re: iR2000 drum issue

Yes, the toner is genuine Canon.

Check the Drum Contact on rear frame inspect and reform if bent-

[iRC]

Re: iR2000 drum issue

Canon.Tech: Yes, all consumables and parts are genuine Canon.

I'll go tomorrow and check the drum contacts; I reckon that'll probably be the cause. Thanks!

[montana]

Re: iR2000 drum issue

hi..i suspect charge leak in developing assembly..or the HVT board malfunction

[Mikey]

Re: iR2000 drum issue

Why don't you change the whole drum assembly instead of only drum. With new assembly you get new drum, new drum blade, new static roller and new waste toner chamber.

[iRC]

Re: iR2000 drum issue

Why don't you change the whole drum assembly instead of only drum. With new assembly you get new drum, new drum blade, new static roller and new waste toner chamber.

Yes, I've changed the whole drum assy two times. No luck...

Montana: I've ordered a new dev. assy last monday. I'll change it if drum contacts are ok.

[COPIERTEC ASSOCIATES]

Re: iR2000 drum issue

Hi dear,i encountered the same problem today and upon inspection,i found worn out spacers on the dev unit.After replacement i run 1000 copies with no problem.

[iRC]

Re: iR2000 drum issue

Hi dear,i encountered the same problem today and upon inspection,i found worn out spacers on the dev unit.After replacement i run 1000 copies with no problem.

Hi, and thanks for your advice. I didn't have time today to go and try all these advices which are told in this thread. I'll try to make it tomorrow!

[COPIERTEC ASSOCIATES]

Re: iR2000 drum issue

Good luck! And dont forget to adjust the doctor blade as well on the dev unit,am sure it will work out.Try to bend it out so that it makes a cutting impact on the dev cylinder.

[iRC]

Re: iR2000 drum issue

Problem solved: At first I changed the dev. assembly, but the problem wasn't fully gone. Then I changed the drum and ran another 50 copies, which were all good. So the freaking dev. assy broke those drums!

Thanks for everyone!