Question about HP Color LaserJet 2600n Printer

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HP 2600n gray background darkness throughout paper

My laser printer shows dark spots all the way down the paper, especially on the left side, but with no measurable distance between the blotches. Also the background on white paper prints out gray. The ETB does have particles of toner on it that I can gently remove, but the problem comes back immediately. Should I replace the ETB or is this some other problem?

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  • afsfsa Nov 03, 2008

    Normally any kind of "ghosting" is due to the fuser going bad, especially if the laser printer has been used alot. Before I take a leap into replaceing the fuser, I wonder if the EBT has anything to do with it. I too see areas on the EBT that contain the same pattern of excess toner corresponding to the streaking on the paper.



    I have run the secondary menu EBT cleaning with out improvement. I do have the older firmware. Although I probably need the firmware update, but I think my problem goes beyond that patch, going by my instincts having seen and repaired other laserjets.



    Note that this printer at first had the firmware issue where ghosting appeared when the printer first run. But it went away. Recently the printer was off for several months. We now wanted to take another look at it, at first it was printing great but remember the old saying, if it ant broke dont fix it, well we got to ambitious and ran the fuser cleaning option in the service menu. The page began to print clean but then a ugly streak of toner appeared half way down the page. And thus continues. Yeah, I can kick myself.



    I am going to try to further isolate if it is just the fuser or anything to do with the EBT. As I do not fully understand how the EBT works and its roll in possibly effecting image quality before I can rule the EBT out. Just being cautious before dumping money, as stuff adds up and at some point its better to just buy new. I know its such a waste but thats the world we live in.



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Ehh, after futher reading it seems, as long as the EBT is not physically damadged, it is fine. So it all points back to the fuser. Ebay for $75 genuine HP.

But for others, just to rule out anything simple, disconnect from computer, and reset to factory defaults. Print Demo page. If still looks ugly, nothing to loose, run the service menu cleaning option, basicly heats the fuser very hot and passes a paper very slowly to catch any excess toner. I have never seen this cleaning option help but you never know. And if your print still looks like ****, you can save your beloved slow printing laser jet, replace the fuser.

Awsome instructions...

http://h20181.www2.hp.com/plmcontent/NACSC/SML/results.htm?SID=446153&MEID=B67763C2-AD42-45FD-B0E6-7D5998FCE86D

Posted on Nov 03, 2008

  • afsfsa Nov 03, 2008

    After further observation and thinking about the imaging processing, I focused on the black toner. Upon further inspection it seemed to be "dirter" and I noticed a "similar" excess toner on the same side of the roller as on the paper. I then sook the cartridge vigourously side to side and got toner all over me. But afterwards, the print is PERFECT again. Looks like when we were cleaning the unit previously or whatever, it messed up the cartridge. Looking good.



    The clue was uneven streaking, and NOT a perfect repeating image "ghosting". It was the cartridge. Note, I have seen similar excess toner streaking in other laser jets, with new cartridges, that required very vigourous shaking to clear the excess toner. Just needed time to think it through.

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