MP2501

[Gab]

Re: MP2501

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?

[slimslob]

Re: MP2501

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.

[fshead]

Re: MP2501

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