MP C2500 thin black lines

[Dumus]

It all started a few days ago.
First out one thin black line, then 2-3, then 5-6 (see Scan 1) to eventually released as the mass line (see Scan 2) and in Color (Color).I made update all of the firmware, Line position adjustment (for Scan1) is for 2-111-003: OK for 2-111-001x2: OK. When out Scann 2 or Color (with a mass of black lines): 2-111-003 is OK but 2-111-001 is failed, in 2-194-007 is 3. List of errors for 3 is too high: defecate. laser optic house, IPU, BICU ..... Does anyone knows for sure what is? Jeh.... NO any SC code....

[logrady2331]

Re: MP C2500 thin black lines

LSU. Coupled with the registration issue I would say the LSU is funky. I've seen it a few times and it was the LSU every time.

[slimslob]

Re: MP C2500 thin black lines

Were the samples that you attached made by scanning printout that have the lines or are the line from the scanning? If the lines are on printouts and the drums have over or close to 80,000 on them, it is time to replace the drum units. If they are considerable less than 80,000 you can get away with cleaning the charge rollers. Cleaning charge rollers is the first thing I do when a machines is getting line like those.

[bob marley]

Re: MP C2500 thin black lines

it seems like a dirty charge roller

[Dumus]

Re: MP C2500 thin black lines

Sorry for the wrong appointment of attachments. Scan1 and Scan2, are actually: print1 and print2, Color is a color page print from customer. Pay attention to print2, where the ends of the line (frame of the counter,development counter and the thick lines above fax number) - outside the boundaries of A4.
I've cleaned the charge rollers and I do not think them.

[dlwalston]

Re: MP C2500 thin black lines

-your lines run all the way off the edge of the page. If it were a scanning issue the lines would stop in the blank lead and trail edge areas. I dont think this is a scan issue but instead a drum issue.

[Dumus]

Re: MP C2500 thin black lines

-your lines run all the way off the edge of the page. If it were a scanning issue the lines would stop in the blank lead and trail edge areas. I dont think this is a scan issue but instead a drum issue.

I did not mean to lines - which are error, but at this:
See atachment: print2.

[allan]

Re: MP C2500 thin black lines

I did not mean to lines - which are error, but at this:
See atachment: print2.

That is late registration or i would say late start of print. that looks very digital to me. I would start by reseating connectors and ram. I also dont think its the LSU. Try to change the LSU first but this looks like a processing issue.

This is in LEF right? Making those main scan lines?

The registration issue could be the clutch. The color sample you attached kind of eliminates the clutch.

[Dumus]

Re: MP C2500 thin black lines

[QUOTE=allan;455777]That is late registration or i would say late start of print. that looks very digital to me. I would start by reseating connectors and ram. I also dont think its the LSU. Try to change the LSU first but this looks like a processing issue.

This is in LEF right? Making those main scan lines?

The registration issue could be the clutch. The color sample you attached kind of eliminates the clutch.[/QUOTE


I think it is not a registration, because it is a print counter from the memory (left side is the beginning of the press). And I think is LSU, but I'm not sure. Has anyone changed LSU with another machines (not NEW)?

[Dumus]

Re: MP C2500 thin black lines

[QUOTE=Dumus;455784]

That is late registration or i would say late start of print. that looks very digital to me. I would start by reseating connectors and ram. I also dont think its the LSU. Try to change the LSU first but this looks like a processing issue.

This is in LEF right? Making those main scan lines?

The registration issue could be the clutch. The color sample you attached kind of eliminates the clutch.

I think it is not a registration, because it is a print counter from the memory (left side is the beginning of the press). And I think is LSU, but I'm not sure. Has anyone changed LSU with another machines (not NEW)?

[slimslob]

Re: MP C2500 thin black lines

From looking at the direction that the thin lines that cover most of the paper, I would say that this as printed SEF (Short Edge Feed). That being the case, the problem is side registration, possibly from the paper not being centered in the tray because of a chipped tooth on the side fence. Take the paper out and move the side fences in as far as they will go. If one of the fences, usually the front one, comes against the lift plate and the other one stops about 3 or 4 mm from the plate then a tooth has been broken off. Remove the lift plate and inspect the fences. Replace the one that has a missing tooth. This was most likely caused by someone trying to move the fences without unlocking the rear fence.

[meldwo]

Re: MP C2500 thin black lines

replace the laser diod black

[Gift]

Re: MP C2500 thin black lines

Shouldn't be a problem to switch LSU between machines - just take case and print the non default SP pages (or use a copy of the factory sp data sheet) and correct all LD related values.

[Dumus]

Re: MP C2500 thin black lines

Hey guys,
problem is solved. It sounds unbelievable but it's just dirty on both mirror on poligon motor. After almost a week of repairs, the customer has not complaint. I could not believe that such nonsense could cause the kind of stripes. (Taught from B / W copiers, not on her mind was not me that this is the case).
Cheers .....

[bob marley]

Re: MP C2500 thin black lines

Hey guys,
problem is solved. It sounds unbelievable but it's just dirty on both mirror on poligon motor. After almost a week of repairs, the customer has not complaint. I could not believe that such nonsense could cause the kind of stripes. (Taught from B / W copiers, not on her mind was not me that this is the case).
Cheers .....

Good news