Unresponsive touch Screens

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  • CKiiza
    Technician

    50+ Posts
    • Feb 2010
    • 77
    #1

    Unresponsive touch Screens

    Good day to you.
    Got these machines C250 and C450. For both, after turning them on, they boot fully to the ready to copy screen but then the touch screens are not responsive at all. for the C450, I worked on it before around 3months ago but it has been off all this time since and C250 its been newly acquired though it is used. I tried to access the C450 through network but the connectivity leds light(blink) though when I search with a universal driver the machine is not seen at all and it even wont ping yet the last time i worked on it I set the IP address. done trouble reset but the machine wont complete process since the screen is not active. Can go to utility mode but no further. my suspicion is that the relationship between the two machines is both have not been working for quite some time now. Any one seen this and solved it before?
    Tags: boot, c450, connectivity, good, konicaminolta, lef, light, mcb, network, network controller, reset, screen, time, touch panel, touchscreens, trouble, twit
    • fixthecopier
      ALIEN OVERLORD

      2,500+ Posts
      • Apr 2008
      • 4714
      #2
      The touch screen will go bad, need to change it.
      The greatest enemy of knowledge isn't ignorance, it is the illusion of knowledge. Stephen Hawking

        Comment

        • artphil
          Trusted Tech
          • Aug 2008
          • 155
          #3
          Quite unorthodox but it does work!


          Kind regards,

          Artphil

            Comment

            • bizhub1
              Trusted Tech

              Site Contributor
              100+ Posts
              • Sep 2008
              • 230
              #4
              KonicaMinolta still has a FOC for those touchscreens, just did one the other day.

                Comment

                • mrwho
                  Major Asshole!

                  Site Contributor
                  2,500+ Posts
                  • Apr 2009
                  • 4299
                  #5
                  Have you tried adjusting the touchscreen on the Acessibility button?
                  ' "But the salesman said . . ." The salesman's an asshole!'
                  Mascan42

                  'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'
                  Ibid

                  I'm just an ex-tech lurking around and spreading disinformation!

                    Comment

                    • CopyTechOz
                      #6
                      Unresponsive touch Screens

                      I tried the Unorthodox fix, it worked but failed again the next day. Anyone have any other fixes other than replacing the touchscreen? Does anyone have an actual adjustment procedure other than the adjustment on Accessibility? Thanks in advance.

                        Comment

                        • Stirton.M
                          All things Konica Minolta

                          1,000+ Posts
                          • Oct 2009
                          • 1804
                          #7
                          What you see is pretty much what you get. It could simply be a matter of a poor electrical connection. The control panel itself is connected to a board found under the scanner glass section, right hand side. There are covers that you need to remove that cover the CCD scanner unit and the C-board underneath. Reseat the ribbon cable on both sides, reseat the cable that connects the C-board to the MCB on both sides.

                          And possibly ensure that the firmware is up to date. Failing those checks, and the previous suggestions, it is very likely you will have to replace the panel.

                          As for the network end of things, the network controller does take a few minutes to initialize after power on. Ensure that you set the IP address and subnet and gateway address fields according to your network needs via administration mode. Keep in mind, those settings are not available in admin mode until the controller has fully initialized. Then connect a laptop with a crossover cable directly to the machine and ping the machine or attempt to web access the machine via IE and the IP address you assigned the copier. Be sure of course, to put in a fixed IP address for your laptop when you connect it this way, and ensure the IP address you use for the copier does not conflict with any other machine on your network. Ping the address chosen before connecting on the network to ensure that IP address is free. I usually choose an IP address outside the range of the router assigned addresses...typical routers assign from 100 up...example, 192.168.0.100, I give the copier 192.168.0.99

                          Also, dump the universal driver. It is a piece of crap that some twit unleashed to the uninitiated....it is truly a waste of your time. Use the driver specific to your model.

                          Speaking of which, is there a Fiery controller attached to the machine? Or are you using the internal KM controller? The difference being is that the fiery will be a small box attached to the machine on the lower back side with a couple cables connecting it to the PCB. If you are not using the correct driver, any connection you attempt will yield problems.
                          "Many years ago I chased a woman for almost two years, only to discover that her tastes were exactly like mine: we both were crazy about girls."
                          ---Groucho Marx


                          Please do not PM me for questions related to Konica Minolta hardware.
                          I will not answer requests or questions there.
                          Please ask in the KM forum for the benefit of others to see the question and give their input.

                            Comment

                            • CopyTechOz
                              #8
                              Thanks, will give that a shot.

                                Comment

                                • fixthecopier
                                  ALIEN OVERLORD

                                  2,500+ Posts
                                  • Apr 2008
                                  • 4714
                                  #9
                                  Originally posted by CopyTechOz
                                  I tried the Unorthodox fix, it worked but failed again the next day. Anyone have any other fixes other than replacing the touchscreen? Does anyone have an actual adjustment procedure other than the adjustment on Accessibility? Thanks in advance.

                                  No, just replace the screen
                                  The greatest enemy of knowledge isn't ignorance, it is the illusion of knowledge. Stephen Hawking

                                    Comment

                                    • CopyTechOz
                                      #10
                                      Thanks guys. Replaced the touch screen and we're good to go. Much obliged.

                                        Comment

                                        • EarthKmTech
                                          Step aside, noob

                                          1,000+ Posts
                                          • May 2009
                                          • 2140
                                          #11
                                          On this range of machines, I must just be unlucky, but most of the time for me its not actually been the touch panel itself, but the little board it plugs into on the left hand side of the control panel. New touch panels did not fix the issue, only the board did. It was particularly prevailent in environments where the carpet causes you to discharge static electricity every 3 steps. The panel is grounded so it shouldnt be that, but clearly it was..

                                            Comment

                                            • blackcat4866
                                              Master Of The Obvious

                                              Site Contributor
                                              10,000+ Posts
                                              • Jul 2007
                                              • 22917
                                              #12
                                              Originally posted by artphil
                                              Quite unorthodox but it does work!

                                              YouTube - touchscreen panel repair

                                              Kind regards,



                                              Artphil
                                              Interesting! I've replaced quite a number of these touch panels on Kyocera Mita products. I had read somewhere that it is a problem with the conductive glue that adheres the ribbon cable to the touch panel. I had not thought of heating it up. I still don't think I'd trust it ... =^..^=
                                              If you'd like a serious answer to your request:
                                              1) demonstrate that you've read the manual
                                              2) demonstrate that you made some attempt to fix it.
                                              3) if you're going to ask about jams include the jam code.
                                              4) if you're going to ask about an error code include the error code.
                                              5) You are the person onsite. Only you can make observations.

                                              blackcat: Master Of The Obvious =^..^=

                                                Comment

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