Kyocera TASKalfa 2552ci drum replacement

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • copier tech
    Field Supervisor

    5,000+ Posts
    • Jan 2014
    • 8012

    #1

    [CQ] Kyocera TASKalfa 2552ci drum replacement

    Hi all,

    Just wondered if anyone one else has had the same issue, after fitting a new drum (K) with the device still powered on we get terrible print quality / black background & there seems no way to resolve it except fitting a new drum but with the power OFF ?

    Is this a known issue ?
    Let us eat, drink, and be merry, because tomorrow we may die!

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk

  • Larhal
    Retired Part Time

    Site Contributor
    VIP Subscriber
    250+ Posts
    • May 2013
    • 438

    #2
    Re: Kyocera TASKalfa 2552ci drum replacement

    Yes I have had this issue, follow what the service manual states and you wont have any issues

    You need to replace the drum with the power off as per the manual.


    After replacing the drum unit, close the cover and turn on the power.
    Drum refresh will be executed automatically.
    Please perform the below settings after "Ready" is displayed.
    1. Drum unit initial setting (Execute maintenance mode U119): Execute (High-end models only)
    2. Developer bias adjustment (Execute maintenance mode U140): AC Calib/Calibration (High end model
    only)
    3. ID correction operation setting (Execute maintenance mode U464): Calib
    4. Primary transfer unit initial setting (Execute the maintenance mode U469): Auto
    5. Adjusting the uneven density (maintenance mode U412): Normal Mode (High-end models only)
    6. ID correction operation setting (Execute maintenance mode U464): Calib (High-end models only)
    7. Adjusting the halftone automatically (Maintenance mode U410)
    (
    Larhal

    Retired Part Tired

    If all else fails read the Service Manual!

    If that fails, meet me at the pub and we will discuss it.

    Comment

    • KYO_OEM
      Senior Tech

      500+ Posts
      • Aug 2011
      • 652

      #3
      Re: Kyocera TASKalfa 2552ci drum replacement

      Welcome to the club!
      Yes, well known because Iris series do not like wrong maintenance.
      Extract from service manual/ chapter maintenance:
      (1) Precautions
      Before disassembling the main unit, press the main power switch to turn the power off. Make sure that the
      power lamp on the operation panel is off and unplug the power cord from the wall outlet. Then, start the
      disassembly.

      This can happen on all new systems, not TA255xci only.
      seen on bw systems like 4012i also.

      Exchange from drum unit needed, because system has overwritten drum eeprom with values from previous drum or other wrong data.
      Depended to the counters/ age of surface, run time, etc. system always calculate needed voltages, if we mount new drum without reset to new data, we get wrong calculations and finally image problems.
      No way out, no adjustments for reset possible.

      Comment

      • dalewb74
        Service Manager

        Site Contributor
        1,000+ Posts
        • Feb 2018
        • 1093

        #4
        Re: Kyocera TASKalfa 2552ci drum replacement

        i have always wondered why some techs leave the power turned on when replacing parts. especially when you know said part has power run to it. you are creating a surge of power removing it with the power still on. in my book, you are just asking for trouble doing that.

        Comment

        • ihatefinishers13
          Senior MFP Technician

          500+ Posts
          • Feb 2020
          • 509

          #5
          Re: Kyocera TASKalfa 2552ci drum replacement

          Originally posted by dalewb74
          i have always wondered why some techs leave the power turned on when replacing parts. especially when you know said part has power run to it. you are creating a surge of power removing it with the power still on. in my book, you are just asking for trouble doing that.
          When we deal with Sharp's, they never have that issue. Yes, there is power run to units, but once you open a maintenance door, power is cut off. The DV units now have connectors that need plugged in after inserting the whole unit, and once you open the door, you can reinsert that connector without issue. Kyocera's are the only manufacturer that I've heard of that has issues like this.

          Comment

          • Tonerkiller
            Senior Tech

            500+ Posts
            • Oct 2012
            • 665

            #6
            Re: Kyocera TASKalfa 2552ci drum replacement

            Always turn a machine off before working on it. Cars too!

            Comment

            • dalewb74
              Service Manager

              Site Contributor
              1,000+ Posts
              • Feb 2018
              • 1093

              #7
              Re: Kyocera TASKalfa 2552ci drum replacement

              Originally posted by Tonerkiller
              Always turn a machine off before working on it. Cars too!
              yeah turn the car off before replacing belts, or you are in for an adventure lol

              Comment

              • copier tech
                Field Supervisor

                5,000+ Posts
                • Jan 2014
                • 8012

                #8
                Re: Kyocera TASKalfa 2552ci drum replacement

                Yes lesson learnt. However many other manufacturers you can replace drums with the device on as opening the front cover cuts power etc.
                Let us eat, drink, and be merry, because tomorrow we may die!

                For all your firmware & service manual needs please visit us at:

                www.copierfirmware.co.uk - www.printerfirmware.co.uk

                Comment

                • davidmtupper
                  Trusted Tech

                  250+ Posts
                  • Jul 2021
                  • 326

                  #9
                  Re: Kyocera TASKalfa 2552ci drum replacement

                  Originally posted by dalewb74
                  yeah turn the car off before replacing belts, or you are in for an adventure lol
                  Or not The Original Fast Volkswagen Belt Change. - YouTube

                  Comment

                  • copier tech
                    Field Supervisor

                    5,000+ Posts
                    • Jan 2014
                    • 8012

                    #10
                    Re: Kyocera TASKalfa 2552ci drum replacement

                    Originally posted by davidmtupper

                    A master mechanic at work !

                    They sure don't make engines like that anymore, hell they don't make engines anymore!
                    Let us eat, drink, and be merry, because tomorrow we may die!

                    For all your firmware & service manual needs please visit us at:

                    www.copierfirmware.co.uk - www.printerfirmware.co.uk

                    Comment

                    • Marcello Zuccolo
                      Junior Member
                      • Oct 2024
                      • 4

                      #11
                      I'll reopen the post if possible, in these cases is it possible to replace only the drum group chip??? Are the chips in circulation usable?? Thanks for the replies.

                      Comment

                      • KYO_OEM
                        Senior Tech

                        500+ Posts
                        • Aug 2011
                        • 652

                        #12
                        NO!!!
                        seems to be you do not know what`s behind from the individual eeproms.
                        It`s the individual storage device for each LLU part/ drum.
                        The content:
                        e.g.
                        drum counter, drum driving distance counter, electrical resistance from drum surface and other inportant values for each drum.
                        Based on this values/ age of the drum/ driving distance counter, all systems are calculating needed voltages for MC, LSU, etc.
                        If you change the eeprom only, background or other problems will appear..
                        Same as assembling from drum by plugged in power plug...

                        Comment

                        • justanotherhack
                          Technician

                          50+ Posts
                          • Apr 2015
                          • 74

                          #13
                          On the slower units that don't allow the u140 calibration you HAVE TO UNPLUG the machine before swapping drums, or the machine will overwrite the chip with the old drum chip info and you just ruined a drum unit. There is no way to fix this.

                          Comment

                          • KYO_OEM
                            Senior Tech

                            500+ Posts
                            • Aug 2011
                            • 652

                            #14
                            this happens on ALL units. not slower units only!
                            Before replacement from any parts with inbuilt eeprom and pwbs or else, you has to unplug the systems from the wall outlet, not for drum swap only!
                            But with a lot of luck, you can repair a defective drum chip if you make the same mistake again.
                            1st attempt ---> wrong data on the eeprom after replacement
                            2. install another new drum with counter reading “0” by unplugged wall outlet and start up the system.
                            Check meter reading by U110/ U120
                            3. reinstall previously wrong installed drum with the incorrect meter reading now with connected wall out again.
                            4. pray and hope that the system now writes the values with “0” back to the eeprom during start up
                            The problem is that this phenomenon does not occur all the time, it only occurs sporadically.
                            To avoid this, the plug must always be removed from the wall outlet beforehand.

                            It has happened in the past that the Eeprom data was corrected by the system and the drum was usable again.
                            But unfortunately not in 99% of the cases.

                            Comment

                            • Marcello Zuccolo
                              Junior Member
                              • Oct 2024
                              • 4

                              #15
                              I've been doing maintenance on Kyocera, TA, Sharp etc. for years. but this thing had never happened to me... I reread the technical manual of the 2552, and I guarantee you that there is no indication to turn off the machine....
                              The manual I used is called: Kyocera-TASKalfa-2552ci-Series-Service-Training-Manual.
                              The MK-8335A replacement has an inner sheet for installation. if it were necessary to turn off the machine, they would have written it in big letters...

                              Comment

                              Working...