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  1. #1
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    pro c5100s Dirty background

    i have cyan dots as a dirty background i need to adjust bias,i don't how to do it on production ,by multi function sp-2-001-004 ,any one know the sp mode?
    also i have lines on printed page comes from development unit,it keeps changes it's position,any ideas how to fix that?
    thanks alot

  2. #2
    Retired 5,000+ Posts slimslob's Avatar
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    Re: pro c5100s Dirty background

    The best solution to drum spots is to replace the drum. What are your current PM counters?

    Sounds like you have developed a stiction problem. Most likely from using after market toner.In that case you will need to purge the toner supply system, replace the developer, clean all waste toner from the PCU and use only Genuine Ricoh toner and developer. If it does not say Genuine Ricoh on the box, it is not.

  3. #3
    Master Of The Obvious 10,000+ Posts
    pro c5100s Dirty background

    blackcat4866's Avatar
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    Re: pro c5100s Dirty background

    For us guys that haven't seen Ricoh in a while please explain "striction". =^..^=
    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 =^..^=

  4. #4
    Retired 5,000+ Posts slimslob's Avatar
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    Re: pro c5100s Dirty background

    Quote Originally Posted by blackcat4866 View Post
    For us guys that haven't seen Ricoh in a while please explain "striction". =^..^=
    It is a condition where the toner would tend to stick to the drum surface and not be removed by the cleaning blade. Common the 50 to 80 models depending on which blade was used.

  5. #5
    Master Of The Obvious 10,000+ Posts
    pro c5100s Dirty background

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    Re: pro c5100s Dirty background

    We see that on a lot of the Toshiba organic photoconductors. In the Toshiba classes they explain that there's a clear coating on the drum that prevents the toner from sticking, but that coating wears off/wears out, then toner starts to adhere. It's usually a ring of teardrop shapes around the drum, that leave a void where image is not developed. Similar? =^..^=
    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 =^..^=

  6. #6
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    pro c5100s Dirty background

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    Re: pro c5100s Dirty background

    Quote Originally Posted by Marwanalhajbi View Post
    i have cyan dots as a dirty background i need to adjust bias,i don't how to do it on production ,by multi function sp-2-001-004 ,any one know the sp mode?
    also i have lines on printed page comes from development unit,it keeps changes it's position,any ideas how to fix that?
    thanks alot
    SP 2001-004 is the adjust for grid bias, but this machine does not have a grid plate since it uses a charge roller. Maybe you meant SP2201-004...
    Anyway, in the Pro C5100s there is SP2201:

    [Set DC Charge]
    Sets DC Bias Charge. However, only enabled when [0:FIXED] is selected in
    SP3-600-001 ProCon Potential Control.
    001 K
    002 C
    003 M
    004 Y
    [300 to 1000 / 550 / 1-V/step]

    and SP2212:

    [Set Dev DC]
    Sets Development DC Bias Charge. However, only enabled when [0:FIXED] is
    selected in SP3-600-001 ProCon Potential Control.
    001 K
    002 C
    003 M
    004 Y

    [200 to 800 / 450 / 1-V/step]

    Good Luck!

  7. #7
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    Re: pro c5100s Dirty background

    Do not f*** with bias, replace parts that are due with genuine parts.
    Last edited by davel; 09-23-2019 at 04:30 AM. Reason: Spelling

  8. #8
    Retired 5,000+ Posts slimslob's Avatar
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    Re: pro c5100s Dirty background

    Quote Originally Posted by eccelobo View Post
    SP 2001-004 is the adjust for grid bias, but this machine does not have a grid plate since it uses a charge roller. Maybe you meant SP2201-004...
    Anyway, in the Pro C5100s there is SP2201:

    [Set DC Charge]
    Sets DC Bias Charge. However, only enabled when [0:FIXED] is selected in
    SP3-600-001 ProCon Potential Control.
    001 K
    002 C
    003 M
    004 Y
    [300 to 1000 / 550 / 1-V/step]

    and SP2212:

    [Set Dev DC]
    Sets Development DC Bias Charge. However, only enabled when [0:FIXED] is
    selected in SP3-600-001 ProCon Potential Control.
    001 K
    002 C
    003 M
    004 Y

    [200 to 800 / 450 / 1-V/step]

    Good Luck!
    Incorrect, older models like the B220 used charge rollers and still had SP 2004 settings. In fact I think the the B220 was,released in about 2005 was the last model to have it. It caused more problems than it cured

  9. #9
    Service Manager 2,500+ Posts TonerMunkeh's Avatar
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    Re: pro c5100s Dirty background

    Can you please print a PM counter list and scan it on here, that will give us a better indication of what is wrong with it.
    Computers are serious tools, Michael!

  10. #10
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    pro c5100s Dirty background

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    Re: pro c5100s Dirty background

    Quote Originally Posted by slimslob View Post
    Incorrect, older models like the B220 used charge rollers and still had SP 2004 settings. In fact I think the the B220 was,released in about 2005 was the last model to have it. It caused more problems than it cured
    B220 has B051 2160: Charge Corona Assembly, and indeed G070 2156: Charge Corona Grid.

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