Question about Ricoh Aficio CL7000 Laser Printer

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In the menu for auto color registration, it fails

I have 2 of cl7000's. Both have new pcu's and developer's. Neither of the will do the auto color registration. Anyone have a clue as to why or how to fix it? On both red is a little off on the calibration. Please help.

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The transfer belt needs to be changed and the chrome roller on the top of the belt assembly needs to be shiny for the sensors to work properly. It might be dirty reg sensors or a bad cleaning section.

Posted on May 20, 2009

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Posted on Jan 02, 2017

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1 Answer

How do fix error Color registration could not performed


Possible remedies for weak images.
-Loose connection between transfer roller and high voltage supply unit.

-Dust in the laser beam path

-Transfer belt not contacting PCU.


Check the transfer unit.

Defective PCU. Replace the PCU.

Defective transfer roller. Repair the transfer roller.

Defective fusing unit. Replace the fusing unit.

Defective engine board. Replace the engine board.











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Hi, my experience with this machine is that the gear that drives the black pcu breaks or cracks. Usually caused by the pcu being too hard to turn. I always turn the developer gear in the pcu before installing it just to loosen the toner.

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No, the PCU is separate from the toner. It is basically the drum imaging unit, and it can easily be replaced if you have a new one. When you open the printer's front door there are a row of black units running diagonally down the front of the copier -- the black PCU is the upper left most one.

You can buy a new black PCU from your local dealer, or else you can find one online from many different sites. Make sure you get the black one -- the color PCUs are separate.

Aug 19, 2011 | Ricoh Aficio CL7000 Laser Printer

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I have serious color shifting occuring even after manuel color registration. Lots of clicking noises that I can't isolate. I have a new transfer unit on the way. Is there any way to run the main motor in...


No,the printer will not run without PCU's installed.The only way unfortunately on this model is to check all gears visually.Most likely bad gears either in one of the PCU's or in the fusing unit.

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I have had a problem like this before and had to replace the black pcu.

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Need to replace the cyan PCU. It is a user replaceable item. Here is a link to user manual:

http://www.ricoh-usa.com/downloads/manuals/printers/cl7000/manuals/CL7000%20Printer%20Maintenance%20Guide.pdf

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Pull out the color photo conductor unit. If you see lines on any of the green drums replace the color photo conductor unit. You can also get color registration errors if the transfer unit is scrached. my first recomendation is to look at the color pcu unit and replace it if you see any lines on it. Also pull out and inspect the black pcu unit.Let me know what you find.

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You NEED to REPLACE the black development unit with a BRAND NEW item......these things are chipped so it won't accept previously installed units.If the problem still exists try a new PCU (toner cartridge).

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One of our Ricoh CL3500N printers- less than a year old- gave us a "color regist error" after changing the transfer belt.

Ran the "adjust color regist" without results. It would just finish and pop back up with the same error.

Color test page printed no color, just BW

I reseated everything, and even replaced the PCU without positive results.

A couple hours later I went back, took everything out (be sure to keep the pcus out of the light!), and vaccuumed the heck outta that printer.

For whatever reason- maybe there was a chunk of toner hanging out, maybe I knocked something loose or back in place, whatever- but when I put all the parts in and turned it on, the error was gone and color printed great!

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1 Answer

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Hi there you have the magenta drum cleaning fault. You will have to replace the Magenta PCU (Photo Conductor Unit) 99.5% sure

Thanks J

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