Page 1 of 2 12 LastLast
Results 1 to 10 of 12
  1. #1
    Senior Tech 250+ Posts tufbnme's Avatar
    Join Date
    Feb 2008
    Location
    BUILD THE WALL! State
    Posts
    487
    Rep Power
    38

    MP3351-Light copy quality only when copying, printing density is good.

    This machine has light density when copying only, either through the ADF or on the platen. The prints and received faxes have great density. I have cleaned the optics very well.
    Any idea what I can check next?
    Thanks

  2. #2
    Tweak it till it breaks! 100+ Posts zames77's Avatar
    Join Date
    Jan 2010
    Location
    Here
    Posts
    121
    Rep Power
    30

    Re: MP3351-Light copy quality only when copying, printing density is good.

    Had this before, I think (and could be wrong) that the machine uses different laser intensity for copying and printing. Replacing the drum fixed my issue.

  3. #3
    Service Manager 2,500+ Posts
    MP3351-Light copy quality only when copying, printing density is good.

    sandmanmac's Avatar
    Join Date
    Feb 2009
    Location
    Toronto, ON
    Posts
    3,884
    Rep Power
    159

    Re: MP3351-Light copy quality only when copying, printing density is good.

    Very common, and many threads here about it.
    Generally when the PCU is near the end of it's life.
    Either rebuild, or replace it.

  4. #4
    Service Manager 1,000+ Posts subaro's Avatar
    Join Date
    Oct 2010
    Posts
    1,244
    Rep Power
    53

    Re: MP3351-Light copy quality only when copying, printing density is good.

    Is there anyway to increase the scanning density rather than replacing the drum. A similar post of this issue came up a few weeks ago and a few people said the same thing, replacing the drum solve the problem. If as he said the print and fax has good density, then the copy should have fairly good copies if the glass and mirrors and cleaned properly.
    And if the drum change solve the problem, then you will have to replace drum prematurely in the future . I don't know the machine, but the logic does not make sense. If a drum is old the density would be obvious.

    post with the fix for this issue.
    THE ONLY THING FOR EVIL TO TRIUMPH IS FOR GOOD MEN TO DO NOTHING..........edmund burke

  5. #5
    Field Supervisor 500+ Posts
    MP3351-Light copy quality only when copying, printing density is good.


    Join Date
    Oct 2007
    Location
    San Diego, CA
    Posts
    969
    Rep Power
    47

    Re: MP3351-Light copy quality only when copying, printing density is good.

    ​as discussed many times on here including last week replace pcu

  6. #6
    Tweak it till it breaks! 100+ Posts zames77's Avatar
    Join Date
    Jan 2010
    Location
    Here
    Posts
    121
    Rep Power
    30

    Re: MP3351-Light copy quality only when copying, printing density is good.

    Quote Originally Posted by subaro View Post
    Is there anyway to increase the scanning density rather than replacing the drum. A similar post of this issue came up a few weeks ago and a few people said the same thing, replacing the drum solve the problem. If as he said the print and fax has good density, then the copy should have fairly good copies if the glass and mirrors and cleaned properly.
    And if the drum change solve the problem, then you will have to replace drum prematurely in the future . I don't know the machine, but the logic does not make sense. If a drum is old the density would be obvious.

    post with the fix for this issue.
    The fix (as posted many, many times on this forum) is to replace the drum (and possibly the dev). Depending on what they've been copying and printing (in terms of coverage) the parts in question will not make life. I don't' know the full details of why copying would be so much fainter than printing, but it's more than likely got something to do with the fact that copying uses the White reference plate to calculate drum charge. Of course, potentially there could be another issue with the scanner or other unit, but the experience of many on this forum indicates that the drum has reached life. In any case, the OP was asking for suggestions, this is one. What's yours?

  7. #7
    Ricoh Fanboy 1,000+ Posts Oze's Avatar
    Join Date
    Jul 2008
    Location
    Toowoomba,QLD
    Posts
    1,662
    Rep Power
    63

    Re: MP3351-Light copy quality only when copying, printing density is good.

    I've had an apprentice clear white balance settings for copying before...he did an Engine clear for some stoopid reason and forgot to re-enter birth certificate settings.
    I attended and entered the settings and BLAM....all good.

  8. #8
    Service Manager 1,000+ Posts subaro's Avatar
    Join Date
    Oct 2010
    Posts
    1,244
    Rep Power
    53

    Re: MP3351-Light copy quality only when copying, printing density is good.

    In any case, the OP was asking for suggestions, this is one. What's yours?

    If you read my repy, you would see i said at least should try to increase density of the scanner and check results.

    well OZE posted a solution he found by accident. Yes, engine resets do sometime produce some results when all esle fails. Did anyone try this before. I would. and post the result. but i don't work on these machines.

    I would also take the drum that you replaced to solve the problem and put it into a machine that has no light copy issue and see the results. The response of the prints ok and copy bad defies the logic of how the machines work. either the scanner has a weak point or firmware or something else.
    Last edited by subaro; 04-09-2015 at 12:46 PM.
    THE ONLY THING FOR EVIL TO TRIUMPH IS FOR GOOD MEN TO DO NOTHING..........edmund burke

  9. #9
    Senior Tech 250+ Posts tufbnme's Avatar
    Join Date
    Feb 2008
    Location
    BUILD THE WALL! State
    Posts
    487
    Rep Power
    38

    Re: MP3351-Light copy quality only when copying, printing density is good.

    Thanks for all the suggestions, the pcu is new, no change. I should have mentioned it but didn't think it would make a difference since the prints a fine. I will try resetting the white balance.

  10. #10
    Field Supervisor 500+ Posts
    MP3351-Light copy quality only when copying, printing density is good.

    Elmo's Avatar
    Join Date
    Feb 2010
    Location
    up north
    Posts
    533
    Rep Power
    40

    Re: MP3351-Light copy quality only when copying, printing density is good.

    it is a common problem with the mp2550/3350/1 series
    good quality prints poor quality copies
    if u try a scan you will see quality is ok therefore no problem with the optics
    Always use original drum for this model
    clean the id sensor and run developer initialize after replacing drum unit

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