Question about Ricoh CL4000DN Laser Printer

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Error message "replace black pcu"

??
the printer is still operating like normal. We do not know where or what this unit is

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Photo Conductor Unit. Instructions come with the replacement. Installs from left side. Read instructions carefully.

Posted on Mar 06, 2009

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SC 491 error message


sc 491 is error signal is detected for 0.2 seconds when charging the drum or development.
• High voltage leak
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How do i fix the error message set pcu correctly on my ricoh aficio sp c811dn


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New Unit Set:
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Feb 03, 2010 | Ricoh Aficio AP3800C Laser Printer

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On a ricoh aficio 3500n color laser printer getting a replace black cpu error after changing the black cartridge. How do i take care of this?


replace the black pcu(drum unit).
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the machine will work but copy quality will reduce and the error will be there.
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Jan 14, 2010 | Ricoh Aficio CL3500N Laser Printer

1 Answer

Error message: replace pcu


I believe its asking you to change the photo conductor unit. From what I can tell there are 2. Theres a black photo conductor and a color photo conductor. If its not telling you which one you should be able to print a supplies status page and you can see which one needs to be replaced. I'm not totally familiar with the machine but the PCU's should be located in the cartridge area. I just checked out our supply catalog and you should be able to order them from any office supply store or Ricoh dealer. Just a heads up..from what I'm looking at the black pcu is pretty reasonable, but the color one is $300 plus! For your sake I hope its the black one that needs replacement! You should be able to verify the error message in your user manual and more than likely find the part number for ordering.

Jul 08, 2009 | Ricoh Aficio CL3500N Laser Printer

1 Answer

Error message


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Jan 13, 2009 | Ricoh Aficio AP3800C Laser Printer

1 Answer

PCU Replacement


You are more right than you know, the reason for the kit is for the reasons you said. When you change the kit all 3 colors are new and thereby not 3 service calls and 1 upset customer.
The kit is far cheaper and keep any "good PCUs" in the original package.
The black PCU is the most important one. Buying the different maint. kits saves $$$ as opposed to peicemeal.

You can put one color PCU in at a time if you wish.
-Carl, please let me know if this helps.

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4 Answers

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Hi there the following is the description from the service manual hope this helps you Thanks J

441 PCU (CMY) motor error
The drive motor of the CMY
PCU is not locked.
• Defective gear
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control board) abnormal (not +24V), or pin 12
(CN12 on engine control board) unable to send
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1. Replace the CMY PCU.
2. Replace the engine control board.
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I would try replacing the CMY PCU (Drums (Photo Conductor Units) first before any of the others.

Thanks J

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2 Answers

Gettin a Error: replace Black PCU.


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hope this helps

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Error Message: Replace Black PCU


I'm not sure how to obtain one, but "Black PCU" stands for Black Photoconductor Unit, and according to a manual for a different Ricoh printer model, it should be fairly simple to replace if you can find one.

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