Question about Konica Minolta bizhub C351 All-In-One Laser Printer

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Bizhub C351 Magenta Image Unit Problem

Sam88kid, Change the magenta image unit (part no.4047-603)? I've changed the IU itself are you suggesting it has a separate waste part?

Posted by mcmurphi on

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  • mcmurphi Jan 14, 2009

    Changed it 3 times and only works for a short duration with new IU.....3-4 thousand prints.

  • mcmurphi Jan 14, 2009

    The tech is supposed to show up today, can I update the firmware myself and how do I check it?  The reason I ask is I'm not sure he will show up as calls are not being returned. (Bought the machine from them W/O service contract and well, they are not to receptive to my needs)

  • mcmurphi Jan 14, 2009

    How do I check the tube from the toner to the IU if it might be plugged, that sounds like this might be my problem here.......

  • mcmurphi Jan 14, 2009

    If my problem was the tube from the toner to the image do I get to that to see if it is plugged?



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The C531 uses 4 toner cartridges and 4 corresponding imaging units. Each imaging unit has a waste compartment for the residue toner not transferred to the Image Transfer Belt (the waste bottle is for waste from this ITB). The residue toner could be reused.

It does not sound right that after 3-4K pages you have to change the IU. Just to be sure the IU you replaced looks like this?
Bizhub C351 Magenta Image Unit Problem - ef6970d.jpg.

Each IU should last about 50K pages (ie to be replaced after 5 toner cartridges).

Posted on Jan 14, 2009

  • sam88kid Jan 14, 2009

    Sorry...didn't answer the question. No the waste part is part of the IU. Sounds like the Magenta IU is taking in more toner than usual and the waste compartment cannot cope.

    Check the firmware. Might need to update the firmware.



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