SC 542 and 545

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  • chops
    Technician
    • Feb 2011
    • 11
    #1

    SC 542 and 545

    It's driving me nuts on a new wide format W5100 MP: consistent SC 542...replaced: power supply,I/O board, thermistors,thermostats. The lamps (2) don't have that bright yellow glow, more of a weak orange. Replaced one of the lamps today, no difference.
    Please help !
    Tags: 542, format, orange, power, replaced, supply, thermistors, wide, wide format, yellow
    • teebee1234
      Service Manager

      Site Contributor
      1,000+ Posts
      • Jul 2008
      • 1670
      #2
      That's strange, almost seems like it has the wrong rating of lamps. I would check the voltage and current going to the lamps first. How is the wall voltage (though I would expect that to create other problems if it was too low). Any chance the wrong lamps are in it, the D046 (MPW5100) are rated at 1000W (center) and 600W (ends) . The D049 (MPW7140) are rated at 1200W ea.
      Last edited by teebee1234; 05-19-2011, 03:23 AM.

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        • cobiray
          Passing Duplication Xpert

          1,000+ Posts
          • Mar 2008
          • 1199
          #3
          I don't have any in the field, but the fuser looks the same as the 480. Have you checked the line voltage? Any resistance in the lamp circuit? I've heard of resetting the engine NVRAM to get rid of the fuser codes on the B246 machines, but it's only on the ones that have flickering lamps.
          the savin2535 is displaying well bet the hiter lamp is not shining and the lamp had been tested o.k.please kindly help.
          Samir: No, not again. I... why does it say paper jam when there is no paper jam? I swear to God, one of these days, I just kick this piece of shit out the window.
          Michael Bolton: You and me both, man. That thing is lucky I'm not armed.

            Comment

            • chops
              Technician
              • Feb 2011
              • 11
              #4
              Thanks for the suggestions: line voltage is steady at 120-ish; resistance on lamp 1 is 4ohms, lamp 2 is 8 ohms (if I remember right).
              I even tried a new power cord/plug today. It's one of the first 5100's made. Tech Support knows of no flaws (yet).
              Question: if I have a steady 120v input to the fuser power supply board, and have 120v at the terminals on that board that go to the lamps, is it most likely my prob is in the fuser section itself?

                Comment

                • teebee1234
                  Service Manager

                  Site Contributor
                  1,000+ Posts
                  • Jul 2008
                  • 1670
                  #5
                  Being this is a 220v device, I'm guessing you measured 120v at each terminal to ground. Looking at the point to point, coming out of the AC control board (which feeds to the fuser), measure the voltage across pins 1 and 3 on CN101 (lamp 1) and pins 1 and 2 on CN102 connectors (lamp 2). You should get between 200-220v.

                    Comment

                    • chops
                      Technician
                      • Feb 2011
                      • 11
                      #6
                      Finally got in the 2nd lamp from Japan. Prob fixed. The wire going into the ceramic on the original lamp proved to be a really flaky connect. 1st time I ever had lamp probs on a wide format. Thanks for everyones help.

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