Question about Xerox Phaser 8400 Laser Printer

4 Answers

Persistent white stripes

My Xerox 8400 has the "white stripe" problem. Have tried the built in cleaning routines and the 8400_jetfix program. Have e-mailed Xerox service and they told me to buy a new printer. This printer has only produced 4200 copies and used only genuine Xerox inkstix.
Xeros thinks it needs a new print head which according to Xerox costs more that the printer.
Is there aaanother solutuion? Can the print head be cleaned of whatever is clogging it?

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  • gsl01 May 12, 2008

    The 8400 is a solid ink printer and uses inkstix. the ink is melted in the machine. The machine has an automated process for cleaning the heads to eliminate "white stripes" which I used many times. Also shuting down the fprinter makes it dump the melted ink which can help (it didn't) and uses a lot of expensive ink. Xerox also has a cleaning routine that you download to the printer called 8400_jetfix with a separate program for each color. That didn't work either, just made the problem worse.



    -jetfix

  • gsl01 May 12, 2008

    They run vertically down the page and no they don't. When I used 8400_jetfix for black, the program prints 5 pages that are supposed to be all black. For me, the first page was covered with white stripes of missing ink. each page got fwhiter and whiter until the last page is just a couple of black stripes. Leave the printer set for a while and it recovers a little. overnite it can recover to where i can maybe print a page or two and be able to read it.

  • gsl01 May 12, 2008

    The "white stripes" are predominently in black areas. and that conforms with the 4800_jetfix program results which I described above for the black color, for the other colors (which are run separately with a program for each color) the first page is solid color with no or little stripping. second through fifth pages start to show increaing number of stripes.

  • gsl01 May 12, 2008

    The paper count is 4219. I did wipe off themaintenance unit wiper blade. What is the CWP aaay? Note: the stripes are not accross all colors on a page, but mainly in dark or black areas. They are what the printer manual call lightr stripes but are not "predominant' light stripes as might be caused by dirt build up. The printing of pages of solid colors is what 8400_jetfix does, and I've tried that.

  • gsl01 May 13, 2008

    gsl@wideopenwest.com

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4 Answers

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In my honest opinion, it would be worth your while to invest in a new printer (perhaps something cheaper, in terms of overheads and maintenance costs)..

Posted on May 12, 2008

  • 2 more comments 
  • Swilin Sampson
    Swilin Sampson May 12, 2008

    It could be a problem with the heating unit that "melts" the ink.

  • Swilin Sampson
    Swilin Sampson May 12, 2008

    Remember that you have to leave the printer on for at least 6 minutes before using it for the warm up mechanism to complete. Also if you do not use the printer every few days, the ink can crystallize. And it is also recommended that you leave the printer continuously on for the same afore-mentioned reasons...

  • Swilin Sampson
    Swilin Sampson May 12, 2008

    Here are some suggestions I found on another website:
    Check the maintenence count. May be expired.Clean the edges of the
    wiping blade. The CWP assy. may be caked up on the edges, and does not
    seal to the printhead.
    Check the cleaning blade under the top cover.
    Print 10-15 pages of solid colors to clear up clogged jets.

  • Swilin Sampson
    Swilin Sampson May 13, 2008

    CWP = Cap Wipe Purge. It could be misaligned, and this could cause the stripes.
    You should have a Eliminate Light Stripes process. Try running that as well..Also try emptying the maintenance tray.

    You may need the services of a Xerox technician or a qualified pro do get all these things done..

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Hmm, I'll try to put in my 2 cents...
Ussually when the head gets clogged they throw them out but since this is expensive.

Try running the self-cleaning process a couple times.

Otherwise try this:

"I discovered that isopropyl alcohol (I bought a bottle of 91% alcohol at the drugstore for ~$3) is a great solvent for this sort of dried ink. There were those that recommended that I take an old, discarded ink jet cartridge, open it, clean it out with the alcohol, fill it back up with alcohol, reseal it, and place it in the printer for a few runs through the printer's self-cleaning method. This proved to be a rather messy endeavor indeed, so I followed a bit of less-agressive advice.

I simply removed the black print cartridge from the printer and dropped 7-10 drops of alcohol down in the ink-recepticle area where the ink cartridge normally sits (there should be a little hole down in there where the ink actually flows from the cartridge into the head), replaced the ink cartridge, and ran a few sessions of the printers head-cleaning routine. It took quite a few cleaning sessions (probably 15-20) with a few pages of text prints thrown in there just to try and move some ink, before it cleared up"

and to give credit where credit is due, it's from this website: http://www.weeno.com/art/0899/140.shtml

Well, try that and tell me what you turn up with.

Good luck.

Posted on May 12, 2008

  • Simon Zwaan
    Simon Zwaan May 14, 2008

    Did you try the cleaning thing ?

    Maybe try that before you get a new one.



    Well, thats about all my knowledge on printers.



    Good luck.

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Are they always in the same place on the page or do they appear random? If it is hard to tell, set the pages next to each other. This might help me troubleshoot it.

Posted on May 12, 2008

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You said you have tried the jet fix. Does that mean you have tried in particular running the pattern and trying to substitute the suspect jets? I am assuming you have.
The wiper could blade could have ink built up on it, or the maintenance kit could be contaminated.
One other thing when reading your problem. Normally you do not get a white strip. When you are referring to the strip, is it just lighter, as if one color is missing, or is it totally blank? Totally blank would unlikely be a print head. If you are referring to just a lighter area, then yes that is the problem.
Retail that is a $750 part.
I know of no way to clean the print head. What you do when you run a remove light stripes procedure is empty the ink form the print head, and one of the odd noises you hear is a compressor blowing air through the ports clearing the jets.

Posted on May 12, 2008

  • Rick Kasper May 13, 2008

    If it is the light stripes, and you really have done all you can minus replacing the print head.

    Send me your E-mail address and lets see what we can come up with for a print head price wise.

    If I am not installing it, I can sell it to you for less.

    I work on those printers daily.

    What you have done is every proper step to resolve that short of replacing the print head.

    Wish there was more to offer, for whatever reason those print heads will fail.

    The phaser toner products, dry ink, have a new technology in ink that produces images better than the solid ink. And no print head, they are standard drum and toner units.

    Let me know, I will help you however I can.

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Scroll to Troubleshooting Print Quality Page. Press OK.
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Clean the maintenance unit's wiper blade and empty the waste tray. A dirty maintenance drawer wiper blade can cause white lines and weak or missing printhead jets. Using a clean lint-free cloth or a paper coffee filter, gently clean the blade with a wiping motion across the entire length of the wiper blade.

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Run the cleaning , eliminate stripes and eliminate smears modes. But more than likely the print head is bad. I would say a bad print head is about a 95 percent chance of causing your problem.
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Wish I had a better and cheaper answer.

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