hp dj T790

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  • 1stcavvet
    Trusted Tech

    100+ Posts
    • Apr 2015
    • 231
    #1

    [Jamming] hp dj T790

    If I attach the cutter to this machine, it goes to the left side after a good print and tries to cut the paper--- travels about 5-6 inches from the left side the carrier stops and shows an 86.10 paper jam,(this is also happening with a new cutter assembly) if I remove the cutter the machine shows no problem.the machine prints and the customer has to manually cut the paper. I was thinking the rear bushing is probably gone and the carrier is dragging in the front -----Looking for any other ideas------ machine is 2-3 years old and hardly gets used
    Tags: None
    • theengel
      Service Manager

      1,000+ Posts
      • Nov 2011
      • 1784
      #2
      Re: hp dj T790

      Have you cleaned and oiled the rail?

      If the rail was dirty and causing a lot of resistance, then the added cutter resistance could be the straw that breaks the back and finally throws up the error.

        Comment

        • Kiran Otter
          Service Manager

          Site Contributor
          1,000+ Posts
          • Dec 2013
          • 1100
          #3
          Re: hp dj T790

          Wow, I had this EXACT problem recently. I thought it was something to do with the belt so I started to replace it. When I removed the carriage, I realized the belt wasn't even attached to it! The carriage was broken where the two posts that hold the belt to the carriage were. How it worked at all... I don't know. I think this is a result of the end user trying to force the carriage to move, either during a jam or some other time.



          When I showed it to HP, they said yup! They'd seen that before.

          So maybe this is your problem.

          Kiran
          Attached Files

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            • Kiran Otter
              Service Manager

              Site Contributor
              1,000+ Posts
              • Dec 2013
              • 1100
              #4
              Re: hp dj T790

              Also, note the correct position for the belt as it threads in the carriage.

              Attached Files

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                • theengel
                  Service Manager

                  1,000+ Posts
                  • Nov 2011
                  • 1784
                  #5
                  Re: hp dj T790

                  Originally posted by Kiran Otter
                  Wow, I had this EXACT problem recently. I thought it was something to do with the belt so I started to replace it. When I removed the carriage, I realized the belt wasn't even attached to it! The carriage was broken where the two posts that hold the belt to the carriage were. How it worked at all... I don't know. I think this is a result of the end user trying to force the carriage to move, either during a jam or some other time.

                  When I showed it to HP, they said yup! They'd seen that before.

                  So maybe this is your problem.

                  Kiran

                  I had one break there... but it wasn't moving at all. And I'm pretty sure it broke because the user was trying to force the carriage to move.

                    Comment

                    • Kiran Otter
                      Service Manager

                      Site Contributor
                      1,000+ Posts
                      • Dec 2013
                      • 1100
                      #6
                      Re: hp dj T790

                      Any update on this, 1stcavvet? I'm curious what you found.

                      Kiran

                        Comment

                        • 1stcavvet
                          Trusted Tech

                          100+ Posts
                          • Apr 2015
                          • 231
                          #7
                          Re: hp dj T790

                          Yup!!! belt attaching area was broken the 2 outer lugs were missing, I took the carrier out of the machine and when I turned around with the carrier in my hand the belt fell on the floor I can't believe it would even print

                            Comment

                            • Kiran Otter
                              Service Manager

                              Site Contributor
                              1,000+ Posts
                              • Dec 2013
                              • 1100
                              #8
                              Re: hp dj T790

                              Yeah, exactly what I had. Thanks for the update!

                              Kiran

                                Comment

                                • theengel
                                  Service Manager

                                  1,000+ Posts
                                  • Nov 2011
                                  • 1784
                                  #9
                                  Re: hp dj T790

                                  I wonder if there's a way to repair those with some kind of clamp. The next time I run across this, I think I'll try. The problem is that aside from keeping the belt clamped down, those two posts also affect belt size because they make a little curve in the belt.

                                    Comment

                                    • 1stcavvet
                                      Trusted Tech

                                      100+ Posts
                                      • Apr 2015
                                      • 231
                                      #10
                                      Re: hp dj T790

                                      Go on ebay To look at carriers t790, there's a guy in England who invented a clamp like your refering to. he's selling them for around 50.00

                                        Comment

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