LJ 700 M712, background, bias-looking issue...

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  • Oystercopy
    Senior Tech

    Site Contributor
    500+ Posts
    • Oct 2009
    • 579
    #1

    LJ 700 M712, background, bias-looking issue...

    Machine has severe background/banding issues... Not entirely sure, but seems to go away when the "old" (empty) toner cartridge is installed back in the machine, but I tried TWO OEM cartridges and they both did the same thing. Yet, the old cartridge does not have the banding issues (see samples). Wondering if anyone has seen this problem being caused by a bad HVT assembly or (somehow) defective bias contacts to the cartridge? I looked at all the contacts on the frame and they appear to be OK.

    Thanks in advance!
    OC
    Attached Files
    Tags: advance, cartridge, contacts, issues
    • Phil B.
      Field Supervisor

      10,000+ Posts
      • Jul 2016
      • 22808
      #2
      Re: LJ 700 M712, background, bias-looking issue...

      Originally posted by Oystercopy
      Machine has severe background/banding issues... Not entirely sure, but seems to go away when the "old" (empty) toner cartridge is installed back in the machine, but I tried TWO OEM cartridges and they both did the same thing. Yet, the old cartridge does not have the banding issues (see samples). Wondering if anyone has seen this problem being caused by a bad HVT assembly or (somehow) defective bias contacts to the cartridge? I looked at all the contacts on the frame and they appear to be OK.

      Thanks in advance!
      OC
      man those examples are WAY too small to be able to read.. scan the copies into pdf format and upload.

      did you run the color calibration after putting the new toners in?

      are they genuine oem carts? 3rd party toners are very ify in HP units.

      be sure NOT to update the firmware due to newer firmware will not allow 3rd party toners to be used.

        Comment

        • Oystercopy
          Senior Tech

          Site Contributor
          500+ Posts
          • Oct 2009
          • 579
          #3
          Re: LJ 700 M712, background, bias-looking issue...

          Originally posted by Phil B.
          man those examples are WAY too small to be able to read.. scan the copies into pdf format and upload.

          did you run the color calibration after putting the new toners in?

          are they genuine oem carts? 3rd party toners are very ify in HP units.

          be sure NOT to update the firmware due to newer firmware will not allow 3rd party toners to be used.
          My posts referenced that they were both OEM cartridges Phil, so no generics being used.
          Attached Files

            Comment

            • BillyCarpenter
              Field Supervisor

              Site Contributor
              VIP Subscriber
              10,000+ Posts
              • Aug 2020
              • 14752
              #4
              Re: LJ 700 M712, background, bias-looking issue...

              This model has a self contained cartridge with drum, PCR, ect.

              It's not necessarily bad toner but the cartridge is defective. Replace with new.
              Adversity temporarily visits a strong man but stays with the weak for a lifetime.

                Comment

                • Oystercopy
                  Senior Tech

                  Site Contributor
                  500+ Posts
                  • Oct 2009
                  • 579
                  #5
                  Re: LJ 700 M712, background, bias-looking issue...

                  Originally posted by BillyCarpenter
                  This model has a self contained cartridge with drum, PCR, ect.

                  It's not necessarily bad toner but the cartridge is defective. Replace with new.
                  2 brand new oem cartridges were installed.. People are not reading tonight😉😉

                    Comment

                    • BillyCarpenter
                      Field Supervisor

                      Site Contributor
                      VIP Subscriber
                      10,000+ Posts
                      • Aug 2020
                      • 14752
                      #6
                      Re: LJ 700 M712, background, bias-looking issue...

                      Originally posted by Oystercopy
                      2 brand new oem cartridges were installed.. People are not reading tonight����

                      But the old cartridge works? How do you explain that? Weird. Oh well....


                      Sorry, I did miss the part about 2 carts.
                      Adversity temporarily visits a strong man but stays with the weak for a lifetime.

                        Comment

                        • Oystercopy
                          Senior Tech

                          Site Contributor
                          500+ Posts
                          • Oct 2009
                          • 579
                          #7
                          Re: LJ 700 M712, background, bias-looking issue...

                          Here's a pic of the original problem with background, that is, if the system will let me upload it!

                          Never mind, the system is having issues uploading docs, tried two browsers.

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