BP70C-45 Return of lines

[tmw]

Our last post was hijacked so I'll try again. We had lines appear on this machine and a new cyan drum seemed to have corrected it at the time but the lines have come back. They appear in all the colors. It looks like an electrical problem might cause it, I would like this to be confirmed or denied. A bulletin says the charge rollers have been modified. These have the old part number. I cleaned the contacts on all the charge rollers and at the back of the machine. When I tried it again, the lines would still come up, but they were much less pronounced and less frequent. I have samples. The first set is before and the second is after.
The odd thing to me is they seem randomly placed. Not matching the drum circumference or either transfer units. I know these models are new, and there seems to be a number of posts on them lately. But if it seems to strike a bell with anyone, I would appreciate hearing what you may have observed. Thank You.

[tmw]

Here are the samples

[westoneking]

Are the lines in the direction of travel or are they showing up length wise across the entire page. If they are in the direction of travel I would clean the charge roller or replace it the. Test again.

[Hansen88]

Are the lines in the direction of travel or are they showing up length wise across the entire page. If they are in the direction of travel I would clean the charge roller or replace it the. Test again.

I work with the person who posted this. The lines are front to back. Not the direction of travel.

[tmw]

Here is the problem I'm having with this. We have had drums damaged in shipment with the charge roller contacting the drum. there would be an obvious solid line going across the page at regular intervals matching the circumference of the drum and the color it's coming from.
These are showing up as thin double lines going from positive to negative depending on the density where it's located. It could be any of the four colors. It doesn't match up with any regular spacing. It could be any part of the page where it feels like it. It just shows up on printed density, not on the blank areas. We have already contacted Sharp about it. It sounded like they were grasping for straws.
I don't want to sound like I expect definitive answers since these are still new. But if someone ran across something odd on another model, it might point to something. We are wondering what we will be spending our money on. All drum units or a board of some sort.

[BentEClip]

Have you ran 64-1 pattern 17? I would get 3-5 of each color and compare on each how that shows up. The PCU PWB is next up most likely after all imaging related parts.

[bilyahn]

Here is the problem I'm having with this. We have had drums damaged in shipment with the charge roller contacting the drum. there would be an obvious solid line going across the page at regular intervals matching the circumference of the drum and the color it's coming from.
These are showing up as thin double lines going from positive to negative depending on the density where it's located. It could be any of the four colors. It doesn't match up with any regular spacing. It could be any part of the page where it feels like it. It just shows up on printed density, not on the blank areas. We have already contacted Sharp about it. It sounded like they were grasping for straws.
I don't want to sound like I expect definitive answers since these are still new. But if someone ran across something odd on another model, it might point to something. We are wondering what we will be spending our money on. All drum units or a board of some sort.

I have had the same problem. I stopped ordering drum units and just rebuild them. Had a new customer that moved their machines to a new location and wound up replacing 6 of the 8 drums because the charge roller damaged the drums in transit causing thin lines for each damaged drum.

[Hart]

Revelant to the problem I guess, it's in french.

[mloudy]

When you say the drums were damaged in shipment are you talking about drums in machines or boxed drum units? There are BP-DU70SA that were damaged while packed at the factory which will cause lines. Someone has knowledge of the lot numbers. I was told the ones I have in stock will have lines based on the lot #'s.

[bilyahn]

When you say the drums were damaged in shipment are you talking about drums in machines or boxed drum units? There are BP-DU70SA that were damaged while packed at the factory which will cause lines. Someone has knowledge of the lot numbers. I was told the ones I have in stock will have lines based on the lot #'s.

BP-DU70SA, out of the 6 units I received over a 6 month period 5 were bad. Very annoying as all 6 went to a billable customer.

Their original drums were damaged in transit when they self moved the copiers to a location 400 miles away.

[Toner Boy]

I saw a bulletin showing the color of the drum cylinder has changed, I'm really hoping that's the roundabout way of fixing the roller-contact issue and that these are less susceptible to damage from charge rollers.

[Hansen88]

I saw a bulletin showing the color of the drum cylinder has changed, I'm really hoping that's the roundabout way of fixing the roller-contact issue and that these are less susceptible to damage from charge rollers.

Those bulletins would be more helpful if they told the specific reasons for the changes. Not just some generic comment about the bulletin.

[WackyJack]

I saw a bulletin showing the color of the drum cylinder has changed, I'm really hoping that's the roundabout way of fixing the roller-contact issue and that these are less susceptible to damage from charge rollers.

Bulletin CCE-3022
"production workability improvement". Whatever that means. I really wish they would be a little clearer than mud with their descriptions

[tmw]

So far, after I cleaned the contacts to the charge rollers and whatever else I did with them, I haven't seen the lines return or heard a report that they had. I hope it stays that way.

[nanohitmen]

Don't mean to necropost but this is happening fresh out the box, tried swapping drums,Transfer unit, at this point we're gonna warranty claim this one, but here's a pdf if anyone may have a clue to the line issue