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  1. #1
    Service Manager 1,000+ Posts
    Minolta Di-450, haven't seen this yet, Laser?

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    Minolta Di-450, haven't seen this yet, Laser?

    Minolta Di-450, haven't seen this yet, Laser?

    First time I see this. Am I right that the Laser diode or the control logic of the printhead it is starting to fail or could it be noise only? It happens every 100 or so copies. Copies are from the platen not EDH ofcourse.



    Hans

    Last edited by Hansoon; 04-05-2009 at 11:13 AM.

  2. #2
    ALIEN OVERLORD 2,500+ Posts fixthecopier's Avatar
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    What about your charge? Looks like maybe the charge could be arching off.

    Democracy is still the worst form of government, except for all the rest of them.

  3. #3
    Service Manager 1,000+ Posts
    Minolta Di-450, haven't seen this yet, Laser?

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    Quote Originally Posted by fixthecopier View Post
    What about your charge? Looks like maybe the charge could be arching off.
    Could be but not likely, grid is only 60K old. Furthermore do the lines have very sharp edges (not so much visible in the picture), it has for my feeling such a "Laser-ish" appearance.

    Hans


  4. #4
    ALIEN OVERLORD 2,500+ Posts fixthecopier's Avatar
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    I have never had a laser do that. I had a problem on an HP printer a long time ago and it was the formatter. You are most likely correct. I am just guessing but I would still think it is power related, like maybe the high voltage transformer.

    Democracy is still the worst form of government, except for all the rest of them.

  5. #5
    Passing Duplication Xpert 1,000+ Posts cobiray's Avatar
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    I don't remember if this was one of the problems at the time, but there was a bulletin about taking the wing nuts out of the bottom of the laser unit over top of the dev unit. I know it caused laser codes, but don't recall if it was for anything else.


  6. #6
    Senior Tech 100+ Posts
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    also maybe the drum aging can cause this problem.


  7. #7
    Field Supervisor 500+ Posts
    Minolta Di-450, haven't seen this yet, Laser?

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    I also have never seen one that bad. at first glance I would say swap the drum out. because no matter what minolta says the yield is supposedto be. it may not make it. I have had the di450 drums only have 50 k and start developing lines just like that. but they were more twards the top or bottom of each copy. but again they were intermittent. and I have had drums make it 150k. so call me crazy but I wouldn't jump to anything other than the drum just yet... what is the actual drum count?

    brent


  8. #8
    Senior Tech 100+ Posts
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    because we are in recond machine industry for this brand.we are using non oem parts. usually the drum life only can use up to 100k.even sm said it can runs to 300k.actually i have experiance a few times it even last to 400++k but the average is 100konly.

    for mean time you can try increase the vsg set in adjust mode.if it disappear or reduced and confirm the drum need to change.


  9. #9
    Senior Tech 100+ Posts time2fly's Avatar
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    Try cleaning all of the optics including the laser slit glass, and adjust VG a little.


  10. #10
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    Yes you should change the image reader (printhead) I had one of those about a year ago. I've tried everything but still no go, still showed me the same you have after a couple of prints. It's not to hard to fit.


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