C220 No Cyan Density!

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  • Gaffers01
    Trusted Tech

    Site Contributor
    250+ Posts
    • May 2011
    • 329
    #1

    C220 No Cyan Density!

    I have a C220 that has no cyan density all other colours inc Black are fine.

    I have attached some prints for you to have a look at, I cant get my head around this one.

    I know of a problem looking at Infohub with the black clutch but as far as i can tell the CMY are all driven by the same clutch.


    Any ideas will be gratefully appreciated
    Thanks
    Attached Files
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    • JR2ALTA
      Service Manager

      Site Contributor
      1,000+ Posts
      • Feb 2010
      • 2017
      #2
      Run a cyan print, stop and look at drum, if solid replace transfer belt. The belt has cams that drop down for CYM individually

        Comment

        • blackcat4866
          Master Of The Obvious

          Site Contributor
          10,000+ Posts
          • Jul 2007
          • 22744
          #3
          Re: C220 No Cyan Density!

          I like your diagnostic method of pulling the cleaner 1/2 way. It reminds me of the days of analogs, when we would put tape on the primary to block primary charge to diagnose paper skew versus optical skew. Of course, on digitals blocked charge means a solid developed image rather than an analog void.

          One new tool in my arsenal. Thanks! =^..^=
          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

            • JustManuals
              Field Supervisor

              5,000+ Posts
              • Jan 2006
              • 9919
              #4
              Re: C220 No Cyan Density!

              This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from:


              Just Manuals, The Internet's largest selection of manuals ~ Instant Downloads


              Paul@justmanuals.com

                Comment

                • Gaffers01
                  Trusted Tech

                  Site Contributor
                  250+ Posts
                  • May 2011
                  • 329
                  #5
                  Re: C220 No Cyan Density!

                  Originally posted by JR2ALTA
                  Run a cyan print, stop and look at drum, if solid replace transfer belt. The belt has cams that drop down for CYM individually
                  Yeah I tried that but there is just spotting on the drum not a Solid.

                  I have tried replacing the HV board but that hasn't made any difference I think my next stop is the PH assy.

                    Comment

                    • RRodgers
                      Service Manager

                      1,000+ Posts
                      • Jun 2009
                      • 1950
                      #6
                      Re: C220 No Cyan Density!

                      I'm thinking laser.
                      Color is not 4 times harder... it's 65,000 times harder. They call it "TECH MODE" for a reason. I have manual's and firmware for ya, course... you are going to have to earn it.

                        Comment

                        • Gaffers01
                          Trusted Tech

                          Site Contributor
                          250+ Posts
                          • May 2011
                          • 329
                          #7
                          Re: C220 No Cyan Density!

                          Hi,

                          Just to let anyone know that has this problem, it was the Laser unit (PH ASSY).

                            Comment

                            • EarthKmTech
                              Step aside, noob

                              1,000+ Posts
                              • May 2009
                              • 2142
                              #8
                              Re: C220 No Cyan Density!

                              the ph unit is a common issue on these machines, I've had this issue too.

                              You also have to pray that the new laser unit isnt handled by morons as theyre quite fragile.

                              I had a pissed off customer to contend with and when i returned to fit the new one found that all the mirrors had fallen out internally. I pulled it apart and spent half an hour correctly reinstalling every single one of the clipped in mirrors. 3 removals and reinstalls were required before i had it aligned properly. Once done never heard back from them, problem solved.

                                Comment

                                • RRodgers
                                  Service Manager

                                  1,000+ Posts
                                  • Jun 2009
                                  • 1950
                                  #9
                                  Re: C220 No Cyan Density!

                                  Originally posted by Gaffers01
                                  Hi,

                                  Just to let anyone know that has this problem, it was the Laser unit (PH ASSY).
                                  Glad you let us know.
                                  Color is not 4 times harder... it's 65,000 times harder. They call it "TECH MODE" for a reason. I have manual's and firmware for ya, course... you are going to have to earn it.

                                    Comment

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