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Thread: MP2501

  1. #11
    Senior Tech 250+ Posts tufbnme's Avatar
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    Re: MP2501

    Check the charge roller.

  2. #12
    Service Manager 1,000+ Posts
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    Re: MP2501

    Quote Originally Posted by fshead View Post
    look considering you had probably a slight dumping of toner before this i would
    clean everything where toner would drop including laser unit..
    if it s spotless when you pull it then just drop it back in......

    when i was a product specialist i f..kng hated going to CQ callbacks and find the tech never cleaned optics or interior of machine..MCP
    i have had several high level lessons "English language" and i practice it almost every day...
    So, I know that the words are English, but what are they trying to say?
    Is this a language speaken in space? Or when eaten space cake?

  3. #13
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    Re: MP2501

    Check transfer roller/ unit.

    Sent from my SM-G930V using Tapatalk

  4. #14
    Service Manager 2,500+ Posts
    MP2501

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    Re: MP2501

    Quote Originally Posted by Gab View Post
    It is almost impossible to be laser unit. As i tald you before i replace drum , image was with dark background . I just replaced opc drum and blade and used geniuin toner istand of compatible . And after those replacements image is light at the edges.
    I'd love to hear your explanation for why replacing a drum would have ANYTHING to do with what could easily (and probably is) dirty laser optics.
    You see....what likely happend is all that crappy toner was blowing around inside the machine and dusted the shield glass, and possibly more, but you go ahead and argue with everyone, and don't bother even checking!

  5. #15
    Senior Tech 100+ Posts barratec's Avatar
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    Re: MP2501

    Quote Originally Posted by sandmanmac View Post
    I'd love to hear your explanation for why replacing a drum would have ANYTHING to do with what could easily (and probably is) dirty laser optics.
    You see....what likely happend is all that crappy toner was blowing around inside the machine and dusted the shield glass, and possibly more, but you go ahead and argue with everyone, and don't bother even checking!
    You are right! dark background(caused by developer) and blowing toner on the laser unit are typical in MP2501 machines!

  6. #16
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    Re: MP2501

    Quote Originally Posted by barratec View Post
    You are right! dark background(caused by developer) and blowing toner on the laser unit are typical in MP2501 machines!
    After the last time where image was lighter at the edges after few days image made worst. Dark backgraund even worst .
    So i replaced developer , executed sp 2-801 and it happened what i was afraid . Now no backgraund but image is light especially about 7cm from both edges even lighter (up and down edge).
    As i have told you the same happened with an other 2501 (i have posts in the past) i have tried everything (cleaned laser, mirrors, separate roller, charge roller, replaced OPC and developer again (genuin) etc ) with no result. And after some months i replaced also OPC and developer again with no result to mention. With the time there was some improvement but image remains not so good till now.
    I also swaped a whole drum unit from an other working fine machine but image remained the same . So i concluded that now the problem is not opc and developer but some voltage values . Any idea?

  7. #17
    Retired 10,000+ Posts
    MP2501

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    Re: MP2501

    Quote Originally Posted by Gab View Post
    After the last time where image was lighter at the edges after few days image made worst. Dark backgraund even worst .
    So i replaced developer , executed sp 2-801 and it happened what i was afraid . Now no backgraund but image is light especially about 7cm from both edges even lighter (up and down edge).
    As i have told you the same happened with an other 2501 (i have posts in the past) i have tried everything (cleaned laser, mirrors, separate roller, charge roller, replaced OPC and developer again (genuin) etc ) with no result. And after some months i replaced also OPC and developer again with no result to mention. With the time there was some improvement but image remains not so good till now.
    I also swaped a whole drum unit from an other working fine machine but image remained the same . So i concluded that now the problem is not opc and developer but some voltage values . Any idea?
    So have you cleaned the laser shield glass yet. It is most likely the cause of the lightness at the front and back edges. Dust or toner hazing on the laser shield glass or inside the laser unit WILL obstruct the laser and cause light print. That is why you have light image on the edges wit a new PCU. If there is also toner haze or dust on the quenching lamp or the ID sensor, it can also cause back grounding to develop. The back grounding is the result of over toning. Before you do anything else, any and all toner has been cleaned from all areas of the machine where it does not belong. The ID sensor should only be cleaned with a soft cotton cloth moistened with water only. If it has ever been cleaned with a solvent such as alcohol or lacquer thinner, you will have to replace it. Return all charge and development biases to their default settings. Finally start with another new, not rebuilt, PCU and properly initialize it.

  8. #18
    Service Manager 1,000+ Posts fshead's Avatar
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    Re: MP2501

    Quote Originally Posted by Mark Bbb View Post
    i have had several high level lessons "English language" and i practice it almost every day...
    So, I know that the words are English, but what are they trying to say?
    Is this a language speaken in space? Or when eaten space cake?
    I am not sure which english you speak,the kings english or here in the ole usa..
    did i confuse you with the abbreviations?
    and no this is not "SPEAKEN" in space

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