Page 1 of 2 12 LastLast
Results 1 to 10 of 16
  1. #1
    Technician
    Join Date
    Jun 2017
    Location
    Fairfield
    Posts
    33
    Rep Power
    4

    mpc 4502 pcu's crusty toner

    Does anyone know what is causing toner build up on the PCU, Its hard toner stuck to the drum. Then it causes black lines and spots on the copy. You can buff it off but I have one that it keeps coming back, This is happening to all the PCU's it seems except the yellow. I have replaced the complete PCU's on cyan and black. New developer unit and pcu but it still comes back, I thought it was coming from labels but they stopped using them. The ITB unit looks good but that is the only thing close to the drums.. Nothing on it. I talked with another tech and he has had the issue as well but he said it never came back. Any ideas? I am tired going out every two weeks to clean off the drum. Thanks for any input.

  2. #2
    Service Manager 1,000+ Posts
    Join Date
    Jan 2009
    Location
    nyc
    Posts
    1,108
    Rep Power
    38

    Re: mpc 4502 pcu's crusty toner

    make sure all filters are clean and fans are working as a start..i even had one where they put the fan in backwards...older b/w series

  3. #3
    Senior Tech 1,000+ Posts
    mpc 4502 pcu's crusty toner

    mikadonovan's Avatar
    Join Date
    May 2008
    Location
    Indianapolis, Indiana
    Posts
    2,128
    Rep Power
    54

    Re: mpc 4502 pcu's crusty toner

    Are you using OEM toner?
    NEVER ASSUME ANYTHING

  4. #4
    Retired 5,000+ Posts slimslob's Avatar
    Join Date
    May 2013
    Location
    Bakersfield, CA
    Posts
    8,619
    Rep Power
    186

    Re: mpc 4502 pcu's crusty toner

    What is the PM count on the drum unit(s)? If the lube bar has worn down too far that can happen.

  5. #5
    Technician
    Join Date
    Jun 2017
    Location
    Fairfield
    Posts
    33
    Rep Power
    4

    Re: mpc 4502 pcu's crusty toner

    Yes its OEM toner. The black and cyan pcu's are new . Maybe 7000 copies on it. I dont want to keep installing new pcu's every time there is a build up. I will check the fans but I don't think that will be an issue. I just changed out the dv units to see if that helps. I have a feeling it may be the wax stuff in the PCU's. Just wondering if anyone else is having this problem. The PCU's are oem as well. Maybe switch to an NA Trading rebuild pcu to see if it works better. This is the only copier that seems to be having this problem. I have several of these in the field.

  6. #6
    Service Manager 2,500+ Posts
    mpc 4502 pcu's crusty toner

    Phil B.'s Avatar
    Join Date
    Jul 2016
    Location
    Raleigh NC
    Posts
    3,018
    Rep Power
    47

    Re: mpc 4502 pcu's crusty toner

    Quote Originally Posted by AMS View Post
    Does anyone know what is causing toner build up on the PCU, Its hard toner stuck to the drum. Then it causes black lines and spots on the copy. You can buff it off but I have one that it keeps coming back, This is happening to all the PCU's it seems except the yellow. I have replaced the complete PCU's on cyan and black. New developer unit and pcu but it still comes back, I thought it was coming from labels but they stopped using them. The ITB unit looks good but that is the only thing close to the drums.. Nothing on it. I talked with another tech and he has had the issue as well but he said it never came back. Any ideas? I am tired going out every two weeks to clean off the drum. Thanks for any input.
    are you using OEM or compatible drums/toners?

    all my 12 years working on Ricoh ... I never found a compatible toner they liked.

  7. #7
    Retired 5,000+ Posts slimslob's Avatar
    Join Date
    May 2013
    Location
    Bakersfield, CA
    Posts
    8,619
    Rep Power
    186

    Post Re: mpc 4502 pcu's crusty toner

    Quote Originally Posted by AMS View Post
    Yes its OEM toner. The black and cyan pcu's are new . Maybe 7000 copies on it. I dont want to keep installing new pcu's every time there is a build up. I will check the fans but I don't think that will be an issue. I just changed out the dv units to see if that helps. I have a feeling it may be the wax stuff in the PCU's. Just wondering if anyone else is having this problem. The PCU's are oem as well. Maybe switch to an NA Trading rebuild pcu to see if it works better. This is the only copier that seems to be having this problem. I have several of these in the field.
    Quote Originally Posted by Phil B. View Post
    are you using OEM or compatible drums/toners?

    all my 12 years working on Ricoh ... I never found a compatible toner they liked.
    I get tired of having people the OEM does not mean the same as Genuine Ricoh (or Sharp or Canon or any other machine manufacturer). I just means that it is produced to the publish general specifications. It does not mean that quality of component, manufacturing, packaging or quality control is the same.

  8. #8
    Senior Tech 100+ Posts FrohnB's Avatar
    Join Date
    Jul 2017
    Location
    Fremont, Nebraska
    Posts
    133
    Rep Power
    5

    Re: mpc 4502 pcu's crusty toner

    I've run into this pretty often on this series. The Lube bar deteriorates, and gets on the drum and charge roller. I've had success in removing the the lube bar and charge roller from the PCU, and vacuuming out all of the loose strands of lube bar and toner, and cleaning the charge roller and drum. Then reassembling. Only have had one call back for this issue, and that drum unit was well beyond it's yield.

  9. #9
    Service Manager 2,500+ Posts
    mpc 4502 pcu's crusty toner

    Phil B.'s Avatar
    Join Date
    Jul 2016
    Location
    Raleigh NC
    Posts
    3,018
    Rep Power
    47

    Re: mpc 4502 pcu's crusty toner

    Quote Originally Posted by slimslob View Post
    I get tired of having people the OEM does not mean the same as Genuine Ricoh (or Sharp or Canon or any other machine manufacturer). I just means that it is produced to the publish general specifications. It does not mean that quality of component, manufacturing, packaging or quality control is the same.
    sorry to me OEM toner has always meant Genuine Manufacture

  10. #10
    Technician
    Join Date
    Mar 2009
    Posts
    32
    Rep Power
    20

    Re: mpc 4502 pcu's crusty toner

    OEM = Original Equipment Manufacture

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Get the Android App
click or scan for the Copytechnet Mobile App

-=-=-=-=-=-


IDrive Remote Backup

Lunarpages Internet Solutions

Advertise on Copytechnet

Your Link Here