Question about Konica Minolta bizhub 350 All-In-One Laser Printer

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Bizhub 350 service code

My Bizhub 350 is giving me a malfunction code of C-OBAO

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  • dwinfrey Sep 15, 2008




    I have just bought a Minolta Di450. The first time I used it, I used the Electronic Document Handler, copies two-sided from single sided, sorted, and stapled the stack. The copy was a little light and had a single line run horizontally on most of the pages. There was also a line about one inch wide on some of the pages.The originals are 16 sheets making the copies 8 back to back sheets. Half way through the stack, the back of each sheet has faint "ghost" copies. This "ghost" text came from the back of the previous sheet. The 16 origninals are numbered on the bottom center beginning with #49 and running to #64. Every even number (the back of each odd number) has the page number copied lightly - a "ghost" image- on the top of the page centered. Does code C-OBAO refer to these problems? And if so, what do I do about it.? Can I deal with this myself, or do I really need to call a technician?


  • ybiC May 11, 2010

    Hello, can you confirm if you have "zeros" or the letter O in the error code? Also, this is a black and white 350 and not a color C350?? Thank you.

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Finisher exit tray drive failure if a trash can or box got put under the tray and the tray tried to move it will show this code if you are lucky you can reset the code by leaving the machine on and open then close the front door if it wont reset the gears are stripped and the motor will have to be replaced

Posted on Oct 23, 2009

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This machine is whith finischer?

Posted on Aug 30, 2009

  • 2 more comments 
  • Darek Goral Aug 30, 2009

    this machine is whith finischer?

  • Darek Goral Aug 30, 2009

    this machine is whith finischer?

  • Darek Goral Aug 30, 2009

    this machine is whith finischer?

  • Darek Goral Aug 30, 2009

    this machine is whith finischer?

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SOURCE: Malfunction code C-OBAO

I have a di3510, wich is very similar. I get this code often. Usually it´s just a malfunction on the finisher. The shutter mecanism. Turn off and move the finisher parts with the hands and turn the mahine on. Usually works for me after 2 tries or so.

Posted on May 04, 2008

6ya6ya
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Posted on Jan 02, 2017

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This code means you have a fuser warm up failure. The fusing unit uses heat and pressure to "fuse" the toner onto the paper. It is located right where the paper exits the machine. Here is the info directly from the service manual:
The Fusing Roller Sub Thermistor does not
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1 Answer

Malfunction code C-OBAO


I have a di3510, wich is very similar. I get this code often. Usually it´s just a malfunction on the finisher. The shutter mecanism. Turn off and move the finisher parts with the hands and turn the mahine on. Usually works for me after 2 tries or so.

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