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  1. #1
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    AR -M450 copy quality problem, pls help!

    Hi everyone,

    The copy quality was getting bad, so I performed 50k and 100k maintenance, replaced drum, clean optics, and I'm still getting grey sky shot and not solid black, I changed the transfer roller but no luck, It seems that there is a lot of toner left on the drum after the paper pass thru.

    The DV = 80 read out

    I swapped the DV units but the quality was still poor.

    Please help.

    Thank you.


  2. #2
    Service Manager 1,000+ Posts bilyahn's Avatar
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    Check the registration unit, take it apart and clean. Have had similar CQ problems caused by poor earth ground. I think there is a tech bulletin regarding this.

    Good luck.

    Bil


  3. #3
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    Which registration unit do you mean bill? Do you have that tech bulletin?


  4. #4
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    AR -M450 copy quality problem, pls help!

    blackcat4866's Avatar
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    Did either of the developing units you installed have fresh developer? Developer is a PM part, and the next place to start. =^..^=

    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.


    blackcat: Master Of The Obvious =^..^=

  5. #5
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    I tested the dv unit from the copier that i know has a good copy quality and the dv had about 33k on it. still he same outcome. grey not black.


  6. #6
    Master Of The Obvious 10,000+ Posts
    AR -M450 copy quality problem, pls help!

    blackcat4866's Avatar
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    Have you ran any self prints 64-01 pattern 83? If so, please attach.

    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.


    blackcat: Master Of The Obvious =^..^=

  7. #7
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    No I haven't ,I'll do tomorrow.


  8. #8
    Service Manager 1,000+ Posts bilyahn's Avatar
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    Quote Originally Posted by pcernicky View Post
    Which registration unit do you mean bill? Do you have that tech bulletin?
    Just below the drum, Sharp now calls it the PS assembly. There are 2 screws at the front of the machine then the unit pulls right out with a connector for one sensor. When you pull it out look at the rear of the machine below the developer unit. I have found a lot of developer spill into this area. I then take apart and clean the unit. Watch out for the small spring when you take the back plate off. Sorry I can't seem to find the TB I am thinking of.


  9. #9
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    Thx bilyahn, I'll try that tomorrow. is it on the bottom where the DV unit slides out?


  10. #10
    Master Of The Obvious 10,000+ Posts
    AR -M450 copy quality problem, pls help!

    blackcat4866's Avatar
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    No, the registration assy comes out with two or for screws from the left door, and one connector at the rear frame. =^..^=

    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.


    blackcat: Master Of The Obvious =^..^=

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