C6501 Eating DRUMS... at 40-60% life

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • methogod
    Senior Tech

    Site Contributor
    500+ Posts
    • Dec 2008
    • 914
    #1

    C6501 Eating DRUMS... at 40-60% life

    Always USE OEM everything - DRUMs are DU-104....

    Black drum keeps failing early with memory type failure. 3 in a row.
    Can put the K drum into another color and sometimes get some more life (or hide the issue for a bit) but once they fail they fail.
    Never had them go in just one color like this... HV may be suspect.

    Today, Did a PM which was due and replaced black HV unit... machine has 2.6m anything you guys see that makes you think something is off elsewhere?
    We now replace coronas at 50-60% life as we print 12x18 mostly (print shop).


    Here is the adjustment list. Let me know if you need any more info

    HTML Code:
    https://www.dropbox.com/s/p25m4r8v70s4dkd/SKMBT_C45119011517150.pdf?dl=0
    Tags: black, drum, life, replaced, unit
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22698
      #2
      Re: C6501 Eating DRUMS... at 40-60% life

      Take a look at Grid K values. I don't know if it's important, but the other grid values are ~100 points over default. Grid K is more than 200 points over default.

      And developer bias CMY are ~ 80 points over default. K is 180 points over default.

      LD Bias K2 is also considerably higher than default. Actually laser diode intensity makes the most sense for drum memory. How are these values set? Sim or numerical values? =^..^=
      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

        • methogod
          Senior Tech

          Site Contributor
          500+ Posts
          • Dec 2008
          • 914
          #3
          Re: C6501 Eating DRUMS... at 40-60% life

          Originally posted by blackcat4866
          Take a look at Grid K values. I don't know if it's important, but the other grid values are ~100 points over default. Grid K is more than 200 points over default.

          And developer bias CMY are ~ 80 points over default. K is 180 points over default.

          LD Bias K2 is also considerably higher than default. Actually laser diode intensity makes the most sense for drum memory. How are these values set? Sim or numerical values? =^..^=

          Not sure what you mean, they are all AUTO set during auto gamma...

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22698
              #4
              Re: C6501 Eating DRUMS... at 40-60% life

              Could the black laser be dusty? =^..^=
              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

                • methogod
                  Senior Tech

                  Site Contributor
                  500+ Posts
                  • Dec 2008
                  • 914
                  #5
                  Re: C6501 Eating DRUMS... at 40-60% life

                  Originally posted by blackcat4866
                  Could the black laser be dusty? =^..^=
                  any dust usually causes voids in the laser path... will clean it to be 100%....

                    Comment

                    • methogod
                      Senior Tech

                      Site Contributor
                      500+ Posts
                      • Dec 2008
                      • 914
                      #6
                      Re: C6501 Eating DRUMS... at 40-60% life

                      Found a FIRMWARE that is just for this XXX-70, forget the letters. Brought the grid back down to earth. Also says that DU104s should not be used but in a pinch. Lets see if i get better life over the next PM and well decide then...

                        Comment

                        Previous template Next
                        Working...