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  1. #11
    Service Manager 1,000+ Posts fshead's Avatar
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    Re: Mpc4502 no toner magenta

    Quote Originally Posted by mrfuser View Post
    Rf contact on back was completely coated. Cleaned and came to ready. Only issue is for magenta only it does not show how much is in it just shows a blank column
    OK
    THAT SOUNDS RIGHT.....................
    and from what i am led to believe these chips use RADIO freq to be read..........
    Well at least you answered all the questions brought up from other techs

  2. #12
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    Mpc4502 no toner magenta

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    Re: Mpc4502 no toner magenta

    Quote Originally Posted by fshead View Post
    OK
    THAT SOUNDS RIGHT.....................
    and from what i am led to believe these chips use RADIO freq to be read..........
    Well at least you answered all the questions brought up from other techs
    Most Ricoh use a non contact RFID system for the toner chips. For some reason they decided to use a contract system with this model. Highly susceptible to contact damage.

  3. #13
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    Re: Mpc4502 no toner magenta

    there is a little elbow that comes off the toner reservoir in the rear of the machine that will clog up. Replace rather than clean because it will return very quickly.

  4. #14
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    Re: Mpc4502 no toner magenta

    Quote Originally Posted by mrfuser View Post
    Rf contact on back was completely coated. Cleaned and came to ready. Only issue is for magenta only it does not show how much is in it just shows a blank column
    this will happen because machine is now confused somehow on which toner is installed or something . perhaps the chip gets damaged? I've seen it but machine will continue to work until btl is empty just as before

  5. #15
    Just a tech 250+ Posts keithxxiii's Avatar
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    Re: Mpc4502 no toner magenta

    Maybe the hose has been squeezed by the transfer unit assembly after installation. There were so many holes on the back frame of the machine that techs sometimes mess up routing the hose to.
    Aye! Cut the crap

  6. #16
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    Re: Mpc4502 no toner magenta

    I replace the nozzle when replacing pump and vacuum the supply hose did not do the fix.

  7. #17
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    Mpc4502 no toner magenta

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    Re: Mpc4502 no toner magenta

    Quote Originally Posted by Mark Bbb View Post
    I replace the nozzle when replacing pump and vacuum the supply hose did not do the fix.
    The toner supply hose has a Teflon coating on the inside to help prevent clogging. Any method of cleaning WILL damage that coating and cause it to clog. That is why Ricoh started selling the pump and hose as a set.

  8. #18
    Service Manager 1,000+ Posts
    Mpc4502 no toner magenta

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    Re: Mpc4502 no toner magenta

    Ok, all was great for a few days and right back to same error per customer. No magenta toner. Replaced tube, pump, elbow, rfid board and cartridge. All came to ready and showed full and now right back to empty! Eh?!?!?? Any ideas?

  9. #19
    Senior Tech 100+ Posts
    Mpc4502 no toner magenta


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    Re: Mpc4502 no toner magenta

    Well, this has happened to me

    the toner stores it standing up, not lying down, and this causes the toner to turn rocks

    total that obstructs the passage through the hose

    so

    I take out the hose, I blow it making sure the air goes well

    back clean the sensor etc

    In the toner cartridge, I open it, that is, I run the toner step, place a sheet of paper for the watering and turn the cartridge so that a bit of toner comes out, the one that is caked

    and it worked well without changing pump or hose




  10. #20
    Service Manager 1,000+ Posts fshead's Avatar
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    Re: Mpc4502 no toner magenta

    Quote Originally Posted by mrfuser View Post
    Ok, all was great for a few days and right back to same error per customer. No magenta toner. Replaced tube, pump, elbow, rfid board and cartridge. All came to ready and showed full and now right back to empty! Eh?!?!?? Any ideas?

    maybe get a tech who does more than fusers

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