Toshiba 5520c close duplexing unit cover

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  • mntech
    Trusted Tech

    Site Contributor
    250+ Posts
    • Aug 2010
    • 250
    #1

    Toshiba 5520c close duplexing unit cover

    Door switches check out, fuses are good. Any help much appreciated.

    Another company had a tech out, they said they replaced all the door switches and the dc power supply.

    Thanks

    Sent from my SM-G955U using Tapatalk
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    • mntech
      Trusted Tech

      Site Contributor
      250+ Posts
      • Aug 2010
      • 250
      #2
      Re: Toshiba 5520c close duplexing unit cover

      One thing I noticed is the only other door that will display a "cover open" message is the duplex outside cover, nothing shows with adf, front door, finisher, lower right door. Not sure if that is abnormal.

      There isn't a third duplex unit door switch that I'm not seeing is there? I only found the 2 120v safety switches, one on frame towards lower back side of right side, and the other up in front next to fuser that the bridge unit also actuates?

      Another thing I noticed is fans come on when I actuate the upper front switch.

      Thanks
      MN tech

      Sent from my SM-G955U using Tapatalk

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        • blackcat4866
          Master Of The Obvious

          Site Contributor
          10,000+ Posts
          • Jul 2007
          • 22703
          #3
          Re: Toshiba 5520c close duplexing unit cover

          The thing that I noticed was that the switch itself isn't the problem, it's the actuator lever that operates the switch:

          From the database:
          "Call For Service C471". Right side lower rear interlock is not made during initialization. One of the shoulder screws is backed out, letting the actuator swing aside. Re-position right side lower rear interlock actuator. Re-install or replace shoulder screw. Reset error in 08-400.

          =^..^=
          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

            • mntech
              Trusted Tech

              Site Contributor
              250+ Posts
              • Aug 2010
              • 250
              #4
              Re: Toshiba 5520c close duplexing unit cover

              I appreciate the reply black cat, but I have manually actuated the switches and verified voltages when doing so, close duplex unit message never goes away

              Sent from my SM-G955U using Tapatalk

                Comment

                • blackcat4866
                  Master Of The Obvious

                  Site Contributor
                  10,000+ Posts
                  • Jul 2007
                  • 22703
                  #5
                  Re: Toshiba 5520c close duplexing unit cover

                  That answers my next question. If the 24v supply voltage to the interlock is missing you can get the same result.

                  Sorry, that's all that I've got. =^..^=
                  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

                    • mntech
                      Trusted Tech

                      Site Contributor
                      250+ Posts
                      • Aug 2010
                      • 250
                      #6
                      Re: Toshiba 5520c close duplexing unit cover

                      I haven't been onsite yet to verify this, but it looks like it may be a sensor instead of interlock switch that is detecting the duplex unit being open.


                      duplex sensors.JPG
                      Attached Files

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                        • blackcat4866
                          Master Of The Obvious

                          Site Contributor
                          10,000+ Posts
                          • Jul 2007
                          • 22703
                          #7
                          Re: Toshiba 5520c close duplexing unit cover

                          Perhaps a disfunctional Sharp 73 sensor? We've all seen plenty of those, all over the machine. =^..^=
                          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

                            • mntech
                              Trusted Tech

                              Site Contributor
                              250+ Posts
                              • Aug 2010
                              • 250
                              #8
                              Re: Toshiba 5520c close duplexing unit cover

                              Sure enough, didn't realize there was a gate in what I would call the duplex inverter, that has a flag with a photo sensor that detects the duplex unit is open/closed... Sneaky little bugger is a bit hidden, threw me off with the other two interlock switches. Once I realized it was there... Pretty easy to correct, 2 screws 1 harness the inverter section comes out, just had to pop the sensor back in place and a dab of super glue for good measure.

                              -mntech

                              Sent from my SM-G955U using Tapatalk

                                Comment

                                • blackcat4866
                                  Master Of The Obvious

                                  Site Contributor
                                  10,000+ Posts
                                  • Jul 2007
                                  • 22703
                                  #9
                                  Re: Toshiba 5520c close duplexing unit cover

                                  Originally posted by mntech
                                  Sure enough, didn't realize there was a gate in what I would call the duplex inverter, that has a flag with a photo sensor that detects the duplex unit is open/closed... Sneaky little bugger is a bit hidden, threw me off with the other two interlock switches. Once I realized it was there... Pretty easy to correct, 2 screws 1 harness the inverter section comes out, just had to pop the sensor back in place and a dab of super glue for good measure.

                                  -mntech

                                  Sent from my SM-G955U using Tapatalk
                                  Congratulations on your success! Thanks for posting back. =^..^=
                                  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

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