Ricoh Aficio 4502 Error SC-549 & Not Fusing on edges. After Fix film assy replace

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  • Doug James
    Senior Tech

    Site Contributor
    500+ Posts
    • Jan 2012
    • 935
    #1

    [Dead] Ricoh Aficio 4502 Error SC-549 & Not Fusing on edges. After Fix film assy replace

    This machine was a huge time toilet today... lol. I replaced the fix film assy (torn Film) and am getting SC 549. I took it apart and checked everything several times. I am assuming the pressure release gear for the pressure roller has something to do with it... It doesn't fuse on the edges sometimes and sometimes it prints fine Anyone know where I am messing this up. I have done this repair at least 20 times. Never with this result.... Thanks for any help !!!
    Tags: assy, film, fix, pressure
    • slimslob
      Retired

      Site Contributor
      25,000+ Posts
      • May 2013
      • 37327
      #2
      Re: Ricoh Aficio 4502 Error SC-549 & Not Fusing on edges. After Fix film assy replace

      Sounds like you either have a bad fusing lamp, lower thermostat, front thermistor or you left a lamp lead disconnected. Recheck your work, by the book.

        Comment

        • Doug James
          Senior Tech

          Site Contributor
          500+ Posts
          • Jan 2012
          • 935
          #3
          Re: Ricoh Aficio 4502 Error SC-549 & Not Fusing on edges. After Fix film assy replace

          Originally posted by slimslob
          Sounds like you either have a bad fusing lamp, lower thermostat, front thermistor or you left a lamp lead disconnected. Recheck your work, by the book.
          I actually ordered another Film assy and figured I would just start over... Thanks for the comments !!

            Comment

            • copier tech
              Field Supervisor

              5,000+ Posts
              • Jan 2014
              • 8132
              #4
              Re: Ricoh Aficio 4502 Error SC-549 & Not Fusing on edges. After Fix film assy replace

              Originally posted by Doug James
              This machine was a huge time toilet today... lol. I replaced the fix film assy (torn Film) and am getting SC 549. I took it apart and checked everything several times. I am assuming the pressure release gear for the pressure roller has something to do with it... It doesn't fuse on the edges sometimes and sometimes it prints fine Anyone know where I am messing this up. I have done this repair at least 20 times. Never with this result.... Thanks for any help !!!
              Possibly a trapped thermistor cable between the covers?. It is also easy to bend the pressure roller thermistor back so its not in contact.





              • Code: 549
              • Description:Causes:Remedy:1. Check the cable connection. 2. Replace the heater cables.
              Let us eat, drink, and be merry, because tomorrow we may die!

              For all your firmware & service manual needs please visit us at:

              www.copierfirmware.co.uk - www.printerfirmware.co.uk
              ​

                Comment

                • Gift
                  Service Manager

                  1,000+ Posts
                  • Mar 2011
                  • 2458
                  #5
                  Re: Ricoh Aficio 4502 Error SC-549 & Not Fusing on edges. After Fix film assy replace

                  correct part nr?

                  It's also possible that the new assy is internally damaged, there are some heat-reflecting shutters inside as moving parts, perhaps they got stuck due to rough handling/shipping.

                    Comment

                    • Doug James
                      Senior Tech

                      Site Contributor
                      500+ Posts
                      • Jan 2012
                      • 935
                      #6
                      Re: Ricoh Aficio 4502 Error SC-549 & Not Fusing on edges. After Fix film assy replace

                      Sure do appreciate the comments !!! Huge Help

                        Comment

                        • luca72
                          Field Supervisor

                          1,000+ Posts
                          • Oct 2017
                          • 1740
                          #7
                          Re: Ricoh Aficio 4502 Error SC-549 & Not Fusing on edges. After Fix film assy replace

                          Originally posted by Doug James
                          This machine was a huge time toilet today... lol. I replaced the fix film assy (torn Film) and am getting SC 549. I took it apart and checked everything several times. I am assuming the pressure release gear for the pressure roller has something to do with it... It doesn't fuse on the edges sometimes and sometimes it prints fine Anyone know where I am messing this up. I have done this repair at least 20 times. Never with this result.... Thanks for any help !!!
                          could be a dirty / faulty thermisor, has it been a long time since you rebuilt it?
                          the temp sensor (AW100146) may also have problems.
                          try increasing the thickness of the paper, to see what happens ... what kind of prints are they? documents or photos, if they are photos try to set, from "speed" to "quality" from the printer driver.
                          "loneliness is an invention of the white man, when we are alone we talk to everything around us, we are never alone" (Ojibwa)

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