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  1. #1
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    Petach Tikva
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    SL-M3870FD - Faded stripe

    Hello,

    I have the following problem. An SL-M3870FD MFP. The counter shows ~72K pages.

    The attached PDF file is a scan of two prints:
    - page 1: a solid black rectangle
    - page 2: a page filled with characters

    Some observations:
    • There is a faded (are with last intensity) stripe of 5.6CM.


    • The intensity loss is less severe in the top 4CM of the page.
    • The toner is a genuine Samsung installed about 18 months ago. It printed ~6500 pages (of 10K).


    • The transfer roller and fuser roller look good from a quick inspection.
    • I see no clear obstacle/paper pieces in the laser window.


    Any idea what to look for?

    Thanks.
    Attached Files Attached Files

  2. #2
    Master Of The Obvious 10,000+ Posts
    SL-M3870FD - Faded stripe

    blackcat4866's Avatar
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    Re: SL-M3870FD - Faded stripe

    Take a look at the developing roller. Is there a 5.6mm bare area on the developing roller?

    Common on monocomponent developing devices, the machine may not detect that the toner cartridge is mostly empty.

    Toner cartridge yields are typically based on 4% fill area per page (for 10K). If your enduser printed/copied 6.5% fill area (for 6.5K) the cartridge is empty. =^..^=
    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.
    5) You are the person onsite. Only you can make observations.

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

  3. #3
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    Re: SL-M3870FD - Faded stripe

    Quote Originally Posted by blackcat4866 View Post
    Take a look at the developing roller. Is there a 5.6cm bare area on the developing roller?

    Yes! - It wasn't easy to observe due to the roller's location in the toner cartridge.

    A toner replacement solved the problem.

    Thank you.

  4. #4
    Master Of The Obvious 10,000+ Posts
    SL-M3870FD - Faded stripe

    blackcat4866's Avatar
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    Re: SL-M3870FD - Faded stripe

    Congratulations on your success! =^..^=
    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.
    5) You are the person onsite. Only you can make observations.

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

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