Ricoh 1035/2035/3045

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  • tcypy1961
    Senior Tech

    500+ Posts
    • Feb 2009
    • 773
    #1

    Ricoh 1035/2035/3045

    I have been having problems with SC-542 - SC-546 codes. What happens is I replace the fuser unit with a rebuilt unit and usually a SC-542 code comes up. I reset the copier comes up ready yet then codes out SC-546 at that time the lower roller melts to the upper. This happens with new thermistors installed. Can the thermostats be responsible for this??? They're not blowing???
    Thanks!!!
    Tags: 1035, ats, codes, copier, dirty, fuser, lef, occur, pressure roller, reset, ricoh, symptom, time, unit, upper
    • Eric1968
      Service Manager

      1,000+ Posts
      • Jan 2009
      • 2458
      #2
      Are you sure you're replacing the correct parts? Thermostats will cut power to the lamps when the temperature rises beyond a certain point. When the hot roller and pressure roller "melt" together the temperature must be really high.

        Comment

        • t891
          Junior Member
          • Feb 2010
          • 5
          #3
          Opdate firmware to v. 2.29 Engine

          BICU (Engine)
          Version Title Symptom Corrected
          2.29
          SC541, 542 Fusing-related SC codes (541, 542) and/or
          incomplete fusing occur when making copies first
          thing in the morning (esp. in cold environments).

            Comment

            • rsyarcia
              Hair Straightener Tech

              500+ Posts
              • Feb 2008
              • 711
              #4
              better to replace thermistor and thersmostat at 1 time.
              Nobody is perfect..

                Comment

                • nmfaxman
                  Service Manager

                  Site Contributor
                  1,000+ Posts
                  • Feb 2008
                  • 1702
                  #5
                  I have seen pinched thermistor wires causing this. If the fuser was just rebuilt with new thermistors the wires can stick out of the cover and pinch to frame.
                  I always wrap them around the lamp wires so they won't stick out.
                  Why do they call it common sense?

                  If it were common, wouldn't everyone have it?

                    Comment

                    • Herrmann
                      Senior Tech

                      Site Contributor
                      500+ Posts
                      • Jan 2006
                      • 792
                      #6
                      If sometimes you feel a little useless, offended and depressed always remember that you were once the fastest and most victorious sperm of hundreds of millions!

                        Comment

                        • BLADE
                          former propeller tester

                          250+ Posts
                          • Dec 2009
                          • 478
                          #7
                          replace the set of door switches near the fuser if all else fails. saw this fault a few years back
                          Last edited by BLADE; 12-24-2010, 03:27 PM.

                            Comment

                            • Ricoh Dicoh
                              Technician

                              50+ Posts
                              • Dec 2010
                              • 62
                              #8
                              Sc 542

                              I am working on a ricoh 1045 fuser. I replaced all the rollers. Thermostats are good as far as i can tell. Thermistors are used but they looked pretty good aswell. I checked continuity over both lamps, they seem to be good. But when i plug the fuser into the machine sc 542 keeps popping up. Sc 542 has to do with the warm up temperature.

                              I am new to this field btw.

                                Comment

                                • zed255
                                  How'd ya manage that?

                                  1,000+ Posts
                                  • Dec 2009
                                  • 1024
                                  #9
                                  Originally posted by Ricoh Dicoh
                                  I am working on a ricoh 1045 fuser. I replaced all the rollers. Thermostats are good as far as i can tell. Thermistors are used but they looked pretty good aswell. I checked continuity over both lamps, they seem to be good. But when i plug the fuser into the machine sc 542 keeps popping up. Sc 542 has to do with the warm up temperature.

                                  I am new to this field btw.
                                  The thermisters are very easy to damage, they should be changed anytime you replace the rollers or even if they become dirty. They just don't tolerate being handled. Replace them both no matter how good they look.

                                    Comment

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