C450I DEAD

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  • mikeena
    field service supervisor

    100+ Posts
    • Mar 2007
    • 216
    #1

    C450I DEAD

    Ok guys i have a fun one for people today. I have a C450i completely dead. i have replaced the main power switch, baseboard, hv, dcpu, cpub, memory board, excb, erb board , anfd still dead. i have then also reeplaced all the boards again together dead. No clue. i am lost for words. i get no 24v from cn6 on the dcpu however if i go to another machine i can disconnect cn6 and the machine still comes on. there is no fans on, nothing. machine dont even make a noise.

    No lights on baseboard however i dont thknk there is a light on baseboard but i could be wrong


    i have also replaced the control panel
    Tags: baseboard, c450i, c550, c650i, dead
    • tsbservice
      Field tech

      Site Contributor
      5,000+ Posts
      • May 2007
      • 7706
      #2
      Re: C450I DEAD

      Bad SSD board usually has another symptoms but give it a shot if anything else fails.
      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.
      Blessed are they who can laugh at themselves, for they shall never cease to be amused.

        Comment

        • Synthohol
          Certified Konica Expert

          Site Contributor
          5,000+ Posts
          • Mar 2016
          • 5533
          #3
          Re: C450I DEAD

          anytime ive had an i series play dead its always the cpu board.
          We know a thing or two because we've seen a thing or two.
          The medication helps though...

            Comment

            • tsbservice
              Field tech

              Site Contributor
              5,000+ Posts
              • May 2007
              • 7706
              #4
              Re: C450I DEAD

              Originally posted by mikeena
              Ok guys i have a fun one for people today. I have a C450i completely dead. i have replaced the main power switch, baseboard, hv, dcpu, cpub, memory board, excb, erb board , anfd still dead. i have then also reeplaced all the boards again together dead. No clue. i am lost for words. i get no 24v from cn6 on the dcpu however if i go to another machine i can disconnect cn6 and the machine still comes on. there is no fans on, nothing. machine dont even make a noise.

              No lights on baseboard however i dont thknk there is a light on baseboard but i could be wrong


              i have also replaced the control panel
              You get all that parts from donor machine not new?
              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.
              Blessed are they who can laugh at themselves, for they shall never cease to be amused.

                Comment

                • mikeena
                  field service supervisor

                  100+ Posts
                  • Mar 2007
                  • 216
                  #5
                  Re: C450I DEAD

                  So I ordered 2 of every board brand new and then rolled a machine next to it and swapped parts. The good machine always work with ever board. Dead machine no go. Which leads me to. Believe I have a bad power cable somewhere. All icp on the baseboard are good and no blown fuses lol. Now here's the catch it does not seem as if my switch is getting 5v so I'm thinking maybe the wiring for the switch

                    Comment

                    • copyman
                      Owner / Technician

                      Site Contributor
                      2,500+ Posts
                      • Sep 2005
                      • 4302
                      #6
                      Re: C450I DEAD

                      Just to be clear was this a new machine or one that was working and then one day dead? I would be very surprised if there was a wiring issue. But who knows with the crap K/M is putting out there!

                        Comment

                        • mikeena
                          field service supervisor

                          100+ Posts
                          • Mar 2007
                          • 216
                          #7
                          Re: C450I DEAD

                          Originally posted by copyman
                          Just to be clear was this a new machine or one that was working and then one day dead? I would be very surprised if there was a wiring issue. But who knows with the crap K/M is putting out there!
                          Well it was working and was in the shop. It had a jamming ossie. I fixed the problem and asked someone to put it back together. Back panels ect after I replaced a board. When u came back to shop it was dead and they were like I'm not sure what happened. So I asked the obvious question did you unplug the machine before you put it back together. I got a laugh then of course so I'm not sure lol

                            Comment

                            • occus
                              Trusted Tech

                              250+ Posts
                              • Jul 2013
                              • 312
                              #8
                              Re: C450I DEAD

                              I guess a wire or the CPUB. Try several time to reseat the CPUB an clean the contacts.

                                Comment

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