Question about Konica Minolta bizhub C250 All-In-One Laser Printer

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Please install the image unit correctly and close all doors

The machine was complaining about the image unite ,then after changing it ,the machine start to show , please install the image unit correctly and close all doors on the printers screen so what do i do ?

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Steve Sweetleaf

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Sometimes just open the doors and closing them a few times will work its sensing somethings open ,Make sure all is closed you may have too reinstall drivers. start over read all directions sometimes we get burnt out on trying to get something going give it a break for a bit then try again. could be a firewall or anti virus cause problems to.

Posted on Mar 03, 2016


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steve p

  • 44 Answers

SOURCE: installed the black imaging unit in konica bizhub

possible a bad image unit. you can try swapping the connector on the bottom of unit to see if it works.

Posted on Jun 28, 2010


sami redoble

  • 3 Answers

SOURCE: my bizhubb c250 is displaying

open front door then push the IU correctly then close the door and close the side door from your right side...

Posted on Nov 27, 2011


Ben Darden

  • 984 Answers

SOURCE: install imaging drum Bizhub c352

The best way to solve your problem is to download the official Konica troubleshooting solution manual. It will tell you how to pinpoint and fix every problem reported to Konica. CLICK HERE

Posted on Jun 08, 2012

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Hp laser jet 3500 printer has an error code 59,99 what can i do /

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1 Answer

Please install the image unit correctly and close all doors

replace the cyan image unit with OEM unit

Btw, I’m available to help over the phone in case u need at

Nov 15, 2013 | Konica Minolta bizhub C250 All-In-One...

2 Answers

There is an error code c-2558 showing on my machine konica minolta bizhub c452 please do let me know the proper remedy for it ASAP

Abnormally high toner density detected Black TRC sensor-

1. Correct the TRC Connection on the underside of the imaging unit if faulty
2. Reinstall black image unit
3. Change image unit
4. Change PWB-M
5. Change PWB-MFP

you can try # 2 then run 20-30 sky shops (copies with lid up to make black copies) put a white piece of paper over lead edge section of copy glass so you are only making 1/2 black copies if you don't the copy may jam in the fuser due to excess toner. after running copies turn machine off for 10 secs to reset and power backon. if problem continues I would change the image unit.

Aug 21, 2011 | Konica Minolta bizhub C250 All-In-One...

1 Answer

The imaging unit need to be changed but it was just changed

When a new Imaging Unit is installed there is a fuse contained within the new unit that blows and resets an electronic counter in the machine. If you installed or had installed a new imaging unit, then the only way the machine would be asking for a new imaging unit now is if either you ran about 70,000 copies or somehow the new unit did not reset the counter. I have never heard of one not resetting the counter as at the same time the counter is reset, the machine initializes the new unit and adjust the ATDC ratio. If this had not occured the mixture of toner to starter (developer) would not be correct and the copies would either become light (undertoned) or have a dark background (overtoned).
If you had the new unit installed then I would contact the service company that installed it and ask for a replacment. If you installed it yourself then there may not be much you can do. You can order a new reset fuse for around $5 and replace the fuse in your imaging unit so the machine thinks there has been another unit installed. has them. Just go there and enter "Di350 fuse" in the search box. In case you were not aware, Your NEC is made by Minolta and is indenticle to a Di350/351.
Those would be your options.
Good Luck and Thank You for using Fixya.

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tis error means abnormal tonder density in the balck image unit take the blacke image unit out and shake it while holding it level and put it back in the machine to reset the error code leave the machine on and open then close the front door

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sounds like your printer engine is starting to take a long unhappy downturn..

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When I had this problem the solution was a tiny piece of paper which was jammed in the machine.
When the jam was cleared the message went away.
Hope this helps

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