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  1. #1
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    Konica Minolta c554e Print quality issues

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    Konica Minolta c554e Print quality issues

    Hello,

    So I was having some print quality issues with this machine. I swapped out the ITB and put in new drums but the issues still remains. I didn't get a chance to try swapping out the Toner yet (need to order). Any other possibilities that can cause this?

    Thank you

    20200629_123405.jpghelp.jpg

  2. #2
    Master Of The Obvious 10,000+ Posts
    Konica Minolta c554e Print quality issues

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    Re: Konica Minolta c554e Print quality issues

    It looks like cyan and black developing to me. =^..^=
    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
    Service Manager 1,000+ Posts
    Konica Minolta c554e Print quality issues


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    Re: Konica Minolta c554e Print quality issues

    One of the developers dumped. Take the drums out and look at dev units and you will see one or more of them has little developer on mag roller. Most likely black. Search this forum about "4" series dev dumping

  4. #4
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    Konica Minolta c554e Print quality issues

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    Re: Konica Minolta c554e Print quality issues

    Thank you both! I will look into getting a new developing unit.

  5. #5
    Master Of The Obvious 10,000+ Posts
    Konica Minolta c554e Print quality issues

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    Re: Konica Minolta c554e Print quality issues

    Inspect the developer brush on each developing roller. There shouldn't be any bare spots. =^..^=
    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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    Konica Minolta c554e Print quality issues

    narellano2's Avatar
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    Re: Konica Minolta c554e Print quality issues

    Quote Originally Posted by blackcat4866 View Post
    Inspect the developer brush on each developing roller. There shouldn't be any bare spots. =^..^=
    Thank you for that info! I will check that out.

  7. #7
    Step aside, noob 1,000+ Posts EarthKmTech's Avatar
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    Re: Konica Minolta c554e Print quality issues

    before installing the new developing unit, make sure to vacuum all the suction ports at the back of the machine and replace the toner filter. Also replace the relevent drum unit of the stripped developer. With the suction ports ensure the spnge gaskets are not deformed on any as if there is suction leakage the issue will return in short order and cyan will be the first to die.

    I also set (in particular cyan) tcr value to minus 1 or 2.

    The cyan developing unit has also been revised to reduce the incidence and identified by a black dot on its barcode sticker.

    Moral of the story, if developer suction is lost due to the port being blocked with toner, cyan toner starts puffing off the dev roller contaminating the charge section of the drum, (because of the ozone suction) the machine over compensates for loss of image density and strips the developer. Same thing applies to c754e engine.
    If at first you don't succeed, try the way I told you how to do it in the first place.

  8. #8
    Technician
    Konica Minolta c554e Print quality issues

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    Re: Konica Minolta c554e Print quality issues

    Quote Originally Posted by EarthKmTech View Post
    before installing the new developing unit, make sure to vacuum all the suction ports at the back of the machine and replace the toner filter. Also replace the relevent drum unit of the stripped developer. With the suction ports ensure the spnge gaskets are not deformed on any as if there is suction leakage the issue will return in short order and cyan will be the first to die.

    I also set (in particular cyan) tcr value to minus 1 or 2.

    The cyan developing unit has also been revised to reduce the incidence and identified by a black dot on its barcode sticker.

    Moral of the story, if developer suction is lost due to the port being blocked with toner, cyan toner starts puffing off the dev roller contaminating the charge section of the drum, (because of the ozone suction) the machine over compensates for loss of image density and strips the developer. Same thing applies to c754e engine.
    I will order a new toner filter also.

    Oh Okay great information. I am a bit of a novice here so forgive me; but the suction ports are in the back of the machine where the vents are? The toner filter is in that area as well?
    Last edited by narellano2; 06-30-2020 at 07:02 PM.

  9. #9
    Service Manager 1,000+ Posts
    Konica Minolta c554e Print quality issues


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    Re: Konica Minolta c554e Print quality issues

    Do you have the service manual showing where parts are? Many here including myself don't mind helping "novices" or "end users" to a certain point but when the poster asks where things are located not sure about the others but it makes me think twice about how much futher to go. Don't take it the wrong way, it's more for someone not causing damage to machine or themselves (high-voltage!)

    You should be able to find serv manual online if you don't have it. The answers you got from myself and others will definitely solve your issue.

  10. #10
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    Konica Minolta c554e Print quality issues

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    Re: Konica Minolta c554e Print quality issues

    Quote Originally Posted by copyman View Post
    Do you have the service manual showing where parts are? Many here including myself don't mind helping "novices" or "end users" to a certain point but when the poster asks where things are located not sure about the others but it makes me think twice about how much futher to go. Don't take it the wrong way, it's more for someone not causing damage to machine or themselves (high-voltage!)

    You should be able to find serv manual online if you don't have it. The answers you got from myself and others will definitely solve your issue.
    Hello copyman,

    So unfortunately I do not have a service manual and i've tried to search online to no avail.
    Matter fact, any information on the konica c554e has been difficult to find more advanced troubleshooting
    issues. Thats what led me to create an account on this forum out of desperation of sorts. Its been great so far!
    Learning alot about these machines. But yea i think ill keep the more novice questions for myself
    and just figure it out on my own. I see that this community has alot of pros and i dont mean to
    bog it down with newby questions.
    Last edited by narellano2; 06-30-2020 at 09:09 PM.

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