Odd persistent banding issue with my DC 3535

[GusG]

See above.... Try the developer DRIVE unit(s).

If by that you mean the motors driving the dev units then we did try to change those but without any improvement.

[azehnali]

its probably cheaper to just get another machine

[AjitN]

Hi
What about laser unit? It looks like defect is in all 4 colors, so it must be some common part which is defective. Laser unit, IBT belt unit, Fuser unit OR drive to these units.
All the best.
Ajit

[elsab]

it might also be a loose connection for BCR bias plate.

[GusG]

Thanks for all your suggestions, my tech is coming in today so we'll work on these things.

As for it being cheaper to just get a new machine, there is some merit to that especially considering the price of these machines today, however, being in Uganda means I can't just go to my nearest dealer and pick one up but would need to source one in Europe or the US, have it air freighted in, pay the customs and by the time I've done all that it's not a $1000 machine any more :-)

[RockETop]

If by that you mean the motors driving the dev units then we did try to change those but without any improvement.

I had a 700 with the very same defect. Just changing the motors didn't fix it either. There was a tip to lube the gears and idlers. that was only temporary. The only fix was replacing the entire drive pack. there was only 200K on the machine.

[GusG]

I had a 700 with the very same defect. Just changing the motors didn't fix it either. There was a tip to lube the gears and idlers. that was only temporary. The only fix was replacing the entire drive pack. there was only 200K on the machine.

Hi RockETop, we did actuallychange the whole drive pack. My techs are here now and we're doing a max setup

[adriansto]

What's the news ?

[GusG]

What's the news ?

The news is still a bit odd. I was about to post that we'd sorted the problem, this is what happened.

I've been using EA-HG toner sometimes in the 3535 instead of the original HG, this is because sometimes we can't get the toner original cartridges here and make do with cartridges for a 2128 or the like and sometimes because we get a lot more DC250 toner for the same price. This has been working well, though we didn't do it so much with black because the 3535 black is already twice the quantity of the other toners so not much to save.

We have, however, lately been using EA-HG black and over the weekend we got a DC250 black toner and when we put that in it we got all sorts of other problems, i.e. clumping of toner in the dev tank, grey background on the prints etc. We then managed to get a proper 3535 EA toner and after some time everything cleared up, including the original banding problem.

But it didn't last and this morning the lines are back in all colours. One of the weird things is that prior to the weekend we were getting some faint black banding in the background and I was beginning to think that that it is the black background banding that is showing in all colors but it is actually banding in every colour and also that seemed to have disappeared over the weekend but now reappeared.

I'm beginning to think there are two issues, a banding issue in all colours that is apparently variable and another banding issue specific to black which is toner dependant.

As mentioned earlier, the banding issue in all colours is less the lighter paper you print on and is non existent in normal paper, I've also discovered that if I send coated one as normal there is no banding and if I send coated 2 as coated 1 there is less banding than if I send it coated 2.

We've cleaned all the bits recommended, we've changed the ROS as well (I have one more ROS from a 2128 I can try), tried another IBT assy and belt, changed the black dev tank 4 times and I'm really stuck now.

[johnner66]

hi

try the drum drive i have the problem after change is ok gd luck thanks

[GusG]

try the drum drive i have the problem after change is ok gd luck thanks

Hi Johnner66, forgot to mention that we did change the drum drive and also the dev tank drive. I have a 3535 and a 2128 for spares

[maich4s]

Hello Mr.GusG,
I had this problem like 2years ago with a xrox phaser 7760,after much examination i found out the developer housing were moving when the machine started to print(they were shaking,so all i did was to make it strong and stiff

[RockETop]

Any new news?

[GusG]

Any new news?

Not really. I'm just kind of living with it. The problem is variable and the more I print the less the problem shows itself, so when I have a really busy day the problem is hardly there. Otherwise sending a few sheets of solid colour sort of "tones up" the machine and the problem reduces.

[GusG]

Re: Odd persistent banding issue with my DC 3535 - SORTED

After living with this issue for months and subsequently getting a serious misregistration of yellow on anything but normal paper (that issue has it's own thread) I tried, again, to switch bits and pieces around from a couple of spare parts machines I have. When I got to the ROS I realised that the best result was actually from the ROS that was first in the machine so when I put it back I got an error. Suspecting it to be a bad connection we cleaned the whole area around where the ROS plugs in, including other plugs, and the result of this was that now everything is working perfectly, no banding, no misregistration and I can do a regicon which I couldn't before. Imagine all that due to a loose plug or board