Page 1 of 2 12 LastLast
Results 1 to 10 of 14

Thread: C224 dev unit

  1. #1
    Aging Tech 1,000+ Posts
    C224 dev unit

    copier addict's Avatar
    Join Date
    Jul 2013
    Location
    Desboro
    Posts
    2,070
    Rep Power
    50

    C224 dev unit

    Hey everyone

    I know there are techs on here who are converting black 4 series dev units to colour. I have done this twice with cyan and both times the t/c ratios are higher than they should be. The first one gives constant C2552 codes and I have had to replace it. The second one hasn't coded yet, but the t/c ratio is at 8.50, which is higher than the average of around 6.25.
    I may have not done the conversion properly, so if someone has the procedure that would be great.
    The way I did it was to put the dev unit in a machine in the shop and run 150 or so sky shots until the colour was pretty close. Is there anything else needed besides the dev chip?
    Thanks

  2. #2
    Service Manager 2,500+ Posts
    C224 dev unit

    Phil B.'s Avatar
    Join Date
    Jul 2016
    Location
    Raleigh NC
    Posts
    4,501
    Rep Power
    73

    Re: C224 dev unit

    Quote Originally Posted by copier addict View Post
    Hey everyone
    I know there are techs on here who are converting black 4 series dev units to colour. I have done this twice with cyan and both times the t/c ratios are higher than they should be. The first one gives constant C2552 codes and I have had to replace it. The second one hasn't coded yet, but the t/c ratio is at 8.50, which is higher than the average of around 6.25.
    I may have not done the conversion properly, so if someone has the procedure that would be great.
    The way I did it was to put the dev unit in a machine in the shop and run 150 or so sky shots until the colour was pretty close. Is there anything else needed besides the dev chip?
    Thanks
    the 'dev chip' .. do you mean TD (toner density) sensor?

    if yes.. color toners require a high bias voltage than K toner.. so if you aren't installing new TD then yes that more than likely is the culprit.

  3. #3
    Technician
    Join Date
    Jan 2014
    Location
    Worcs
    Posts
    12
    Rep Power
    12

    Re: C224 dev unit

    Hi
    we do this all the time , exactly what you followed
    works a treat

  4. #4
    Aging Tech 1,000+ Posts
    C224 dev unit

    copier addict's Avatar
    Join Date
    Jul 2013
    Location
    Desboro
    Posts
    2,070
    Rep Power
    50

    Re: C224 dev unit

    Quote Originally Posted by Phil B. View Post
    the 'dev chip' .. do you mean TD (toner density) sensor?

    if yes.. color toners require a high bias voltage than K toner.. so if you aren't installing new TD then yes that more than likely is the culprit.
    Thanks for the response Phil.
    Yes, I do mean the TD sensor, which gets mounted on the outside of the dev unit on the plastic holder.
    I install the TD sensor before I insert the dev unit into the machine needing the new dev.

  5. #5
    Aging Tech 1,000+ Posts
    C224 dev unit

    copier addict's Avatar
    Join Date
    Jul 2013
    Location
    Desboro
    Posts
    2,070
    Rep Power
    50

    Re: C224 dev unit

    Ok, so I tested another converted dev unit in a machine in the shop and same thing. It went from 6.31% on Friday to 8.35 on Monday and I'm not sure why.
    Is it normal for the converted dev units to have a high toner concentration?
    All of the drums are almost new, 98%. And not 98% used up.
    If there was only a couple hundred dollars difference in price between black and coloured dev units I wouldn't care, but the coloured dev units are $500 more than black.
    Any and all thoughts are appreciated.
    Thanks

  6. #6
    RTFM!! 2,500+ Posts allan's Avatar
    Join Date
    Apr 2010
    Location
    Centurion
    Posts
    3,423
    Rep Power
    68

    Re: C224 dev unit

    No they should be at 6.5%

    The fuse(ICP) on the existing color tank chips needs to be replaced to trigger new article detection.
    I use fuse (ICP) from the TN512's i convert to TN321.

    Or just replace with after market chips.
    Whatever

  7. #7
    Field Supervisor 500+ Posts tsbservice's Avatar
    Join Date
    May 2007
    Posts
    619
    Rep Power
    37

    Re: C224 dev unit

    When you convert dev unit in your office machine, did you reset it? If no reset is performed calibration is not done, which may be the reason why TCR sensor measurements didn't fall into 5-8% limits for this machine.
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

  8. #8
    Aging Tech 1,000+ Posts
    C224 dev unit

    copier addict's Avatar
    Join Date
    Jul 2013
    Location
    Desboro
    Posts
    2,070
    Rep Power
    50

    Re: C224 dev unit

    Quote Originally Posted by allan View Post
    No they should be at 6.5%

    The fuse(ICP) on the existing color tank chips needs to be replaced to trigger new article detection.
    I use fuse (ICP) from the TN512's i convert to TN321.

    Or just replace with after market chips.
    I use aftermarket dev chips. The toner ratio starts fine, but creeps up higher after a few days to a week.

  9. #9
    Aging Tech 1,000+ Posts
    C224 dev unit

    copier addict's Avatar
    Join Date
    Jul 2013
    Location
    Desboro
    Posts
    2,070
    Rep Power
    50

    Re: C224 dev unit

    Quote Originally Posted by tsbservice View Post
    When you convert dev unit in your office machine, did you reset it? If no reset is performed calibration is not done, which may be the reason why TCR sensor measurements didn't fall into 5-8% limits for this machine.
    I'm not sure what you mean. If I reset it in the shop it will not reset in the customer's machine. The count does not follow dev unit.

  10. #10
    Field Supervisor 500+ Posts tsbservice's Avatar
    Join Date
    May 2007
    Posts
    619
    Rep Power
    37

    Re: C224 dev unit

    Quote Originally Posted by copier addict View Post
    I'm not sure what you mean. If I reset it in the shop it will not reset in the customer's machine. The count does not follow dev unit.
    I know where reset belongs, but this way you aren't running calibration of new TCR sensor, your office machine keeps working with ratio remembered from its own dev unit and that may be your problem. Every TCR sensor has different characteristics thus this calibration is made. Well I may be wrong, cuz honestly never did that.
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

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
  •