Taskalfa 250ci KX error code C0640

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  • lorenzdv
    • May 2025

    #1

    Taskalfa 250ci KX error code C0640

    Hi,
    my printer doesn't startup and give me the error code C0640, what can I do? I don't think it depends on HDD, because I try to substitute it but the same error compares on the display.
    Help me please.
  • Eric1968
    Service Manager

    1,000+ Posts
    • Jan 2009
    • 2458

    #2

    Comment

    • lorenzdv

      #3
      Re: Taskalfa 250ci KX error code C0640

      Thanks a lot....So, what should you do? the warranty isn't valid, must I change it?

      Comment

      • darry1322
        Senior Tech

        Site Contributor
        500+ Posts
        • Oct 2010
        • 817

        #4
        Re: Taskalfa 250ci KX error code C0640

        Make sure you format the drive from the maintenance menu.

        Comment

        • kkendric
          Trusted Tech

          250+ Posts
          • Apr 2009
          • 301

          #5
          Re: Taskalfa 250ci KX error code C0640

          This is a Hard Drive error, a functioning Hard Drive is required for this copier to function correctly. You will need to re-enable the Hard drive by going into the service mode and performing a reset disable function then format the new drive. All of this information can be found in your service manual. If you are an end user you should hire a technician to do this.

          Comment

          • Eric1968
            Service Manager

            1,000+ Posts
            • Jan 2009
            • 2458

            #6
            Re: Taskalfa 250ci KX error code C0640

            Originally posted by kkendric
            This is a Hard Drive error, a functioning Hard Drive is required for this copier to function correctly. You will need to re-enable the Hard drive by going into the service mode and performing a reset disable function then format the new drive. All of this information can be found in your service manual. If you are an end user you should hire a technician to do this.
            U906 won't enable a defective HDD. U906 only resets problems with paper banks, document feeders, finishers.

            Comment

            • kkendric
              Trusted Tech

              250+ Posts
              • Apr 2009
              • 301

              #7
              Re: Taskalfa 250ci KX error code C0640

              Eric1968, You are correct for the newer machines, I stand corrected. However I also pulled out a KM-6030 and disconnected the HDD ant you do have to perform a 906 before the HDD will come back to life.

              Comment

              • lorenzdv

                #8
                Re: Taskalfa 250ci KX error code C0640

                I'm an end user, but my technical support for the printer had just substitute the HDD and the error doesn't desapear

                Comment

                • dedu
                  Junior Member
                  • Apr 2014
                  • 9

                  #9
                  Re: Taskalfa 250ci KX error code C0640

                  selamlar
                  Maintenance
                  item No.
                  U021
                  Memory initializing
                  Description
                  Initializes all settings, except those pertinent to the type of machine, namely each counter, service call history
                  and mode setting. Also initializes backup RAM according to region specification selected in maintenance item
                  U252 Setting the destination.
                  Refer to *1 of the maintenance mode item list about the item initialized.
                  Purpose
                  To return the machine settings to their factory default.
                  Method
                  1. Press the start key.
                  2. Press [EXECUTE] on the touch panel.
                  3. Press the start key. All data other than that for adjustments due to variations between machines is initial-
                  ized based on the destination setting.
                  4. Turn the main power switch off and on.
                  For errors occurred, turn main power switch off then on, and execute initialization.
                  Error codes
                  U024
                  HDD formatting
                  Description
                  Initializes the hard disk.
                  In addition, the following settings are also initialized by initializing the hard disk.
                  System menu (user login administration, job accounting, address book, one-touch keys and document box
                  etc.), shortcuts and panel programs
                  Purpose
                  To initialize the hard disk when replacing the hard disk after shipping.
                  Method
                  1. Press the start key.
                  2. Press [EXECUTE] on the touch panel.
                  3. Press the start key to initialize the hard disk.
                  4. Turn the main power switch off and on.
                  Description
                  Codes Description
                  01 Configuration initialization error
                  02 Counter initialization error
                  20 Engine initialization error
                  40 Scanner initialization error
                  2JZ/2JX/2JV/2H7-5
                  1-3-23

                  Comment

                  • Eric1968
                    Service Manager

                    1,000+ Posts
                    • Jan 2009
                    • 2458

                    #10
                    Re: Taskalfa 250ci KX error code C0640

                    Originally posted by kkendric
                    Eric1968, You are correct for the newer machines, I stand corrected. However I also pulled out a KM-6030 and disconnected the HDD ant you do have to perform a 906 before the HDD will come back to life.
                    Your right! Thanks for the heads up!

                    Comment

                    • memerudd

                      #11
                      Re: Taskalfa 250ci KX error code C0640

                      I am a tech and i am replacing hard drives on a 420i. On the first one i formatted the hard drive from my computer in disk management and they worked fine in the printer. I did the same thing on another one later on same printer and i get the error code 0640 for the hard drive and i execute and all this....Press [EXECUTE] on the touch panel.
                      3. Press the start key. All data other than that for adjustments due to variations between machines is initial-
                      ized based on the destination setting.
                      4. Turn the main power switch off and on.
                      For errors occurred, turn main power switch off then on, and execute initialization.
                      Error codes
                      U024
                      after that it just goes back to the erro code and i start all over but just keep getting error code.
                      I tried on different printer with 2 different hard drives by just putting them in it and letting the printer format the hard drive and i get the same code that way.
                      These are the exact hard drives i used in the first printer that works.
                      Maybe I am missing a set when I am formatting it from my computer.
                      Can someone please tell me the exact way for me to format one for a printer.

                      Comment

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