C1085 with yellow overlay

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  • emujo2
    Service Manager

    1,000+ Posts
    • Mar 2017
    • 1580
    #1

    [Misc] C1085 with yellow overlay

    Machine will start laying down a yellow overlay on B&W prints...Techs go out and clear it for 30-40 K then it's back... Any thoughts? TIA Ed
    Edit added image of issue in middle of run59189112443__630D6694-859F-449D-A154-B81F0BD7AFF9.jpg

    Drums, developer, coronas all have been swapped (some twice) nothing changes.
    Tags: back, edge, lead, overlay, yellow
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22703
      #2
      Re: C1085 with yellow overlay

      Looks like yellow primary charge loss to me, but I can't imagine exactly where. =^..^=
      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

        • Toxic
          Senior Tech

          500+ Posts
          • Dec 2009
          • 690
          #3
          Re: C1085 with yellow overlay

          When that happened you did not get any error code?
          If you stop curent job and start another do you get same yellow background on BW and color output or it come up again after some time?

            Comment

            • emujo2
              Service Manager

              1,000+ Posts
              • Mar 2017
              • 1580
              #4
              Re: C1085 with yellow overlay

              My guys are guessing at this point, but whatever they try, clean replace, the problem will re appear within a few thousand prints..I'm gonna try the process unit and HVT next. No codes. E

                Comment

                • blackcat4866
                  Master Of The Obvious

                  Site Contributor
                  10,000+ Posts
                  • Jul 2007
                  • 22703
                  #5
                  Re: C1085 with yellow overlay

                  I'd put my money on the HVT or yellow developing unit. =^..^=
                  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

                    • emujo2
                      Service Manager

                      1,000+ Posts
                      • Mar 2017
                      • 1580
                      #6
                      Re: C1085 with yellow overlay

                      OK, problem has worsened, the loss of yellow is permanant. on a 11x17 test print (43) you can see about 1/3 on the correct yellow density. After this point it becomes a faint yellow background, all other test prints with yellow are affected. Lead and side edge deletion is working so I'm assuming we have a good charge. Still no error codes..E

                        Comment

                        • tsbservice
                          Field tech

                          Site Contributor
                          5,000+ Posts
                          • May 2007
                          • 7635
                          #7
                          Re: C1085 with yellow overlay

                          I would check PH image processing board (IPB/P)
                          and Main image processing board (IPB/M)

                          Main image processing board line memory check(1) Usage When the image of a particular color is misaligned in the sub scan direction and a notable image trouble occurs, check whether there is any abnormality on the main image processing board (IPB/M).
                          Procedure
                          1. Enter the I/O check mode.
                          2. Enter "98" with the numeric keys.Confirm that "98-00" appears on the message display area.
                          3. Press the Access key.
                          4. Enter one of the followings with the numeric keys.Check that "98-##" (## represent the multi code number) appears in the message display area.Multi Code 06: Main image processing board line memory (SDRAM) check/YMulti Code 07: Main image processing board line memory (SDRAM) check/MMulti Code 08: Main image processing board line memory (SDRAM) check/CMulti Code 09: Main image processing board line memory (SDRAM) check/K
                          5. Press the Start key.During the operation-"NOW" appearsThe operation succeeded - "OK" is displayedThe operation failed - "NG" is displayedWhen "NG" appears, replace IPB/M.
                          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

                            • emujo2
                              Service Manager

                              1,000+ Posts
                              • Mar 2017
                              • 1580
                              #8
                              Re: C1085 with yellow overlay

                              Thanks TB..already have replaced these. So far a 2nd Yellow DV unit seems to have cleared it up, but we are running tons of jobs so we can feel a little more confident. E

                                Comment

                                • emujo2
                                  Service Manager

                                  1,000+ Posts
                                  • Mar 2017
                                  • 1580
                                  #9
                                  Re: C1085 with yellow overlay

                                  So, replacing the Y dev unit cleared the problem, however putting the old Y dev unit back in the machine does not make the problem re appear, so I'm not convinced the Y dev is the culprit..We are running the crap out of this to try and make the problem come back.

                                    Comment

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