Check for invisible laser emissions?

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  • mrwho
    Major Asshole!
    Site Contributor
    2,500+ Posts
    • Apr 2009
    • 4298

    [Electrical] Check for invisible laser emissions?

    Anyone knows of any way of checking if a laser unit is emiting (short of looking directly at it and see if I go blind or not), to troubleshoot white printouts?

    Cheers!
    ' "But the salesman said . . ." The salesman's an asshole!'
    Mascan42

    'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

    Ibid

    I'm just an ex-tech lurking around and spreading disinformation!
  • mrwho
    Major Asshole!
    Site Contributor
    2,500+ Posts
    • Apr 2009
    • 4298

    #2
    Solved!

    Followed these instructions here on a old webcam (luckily I had a couple just like the one pictured) and it works a charm!
    ' "But the salesman said . . ." The salesman's an asshole!'
    Mascan42

    'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

    Ibid

    I'm just an ex-tech lurking around and spreading disinformation!

    Comment

    • mike*
      Technician
      50+ Posts
      • Jun 2010
      • 58

      #3
      so with the old web cam it would pick up on the laser since it was in infrared mode?

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      • mrwho
        Major Asshole!
        Site Contributor
        2,500+ Posts
        • Apr 2009
        • 4298

        #4
        Either you have a camera that can pickup infrared (some camcorders can when in nightvision) or you can modify a webcam using the method above (which is what I did).
        ' "But the salesman said . . ." The salesman's an asshole!'
        Mascan42

        'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

        Ibid

        I'm just an ex-tech lurking around and spreading disinformation!

        Comment

        • Eric1968
          Service Manager
          1,000+ Posts
          • Jan 2009
          • 2460

          #5
          If the laser isn't emitting, you would instantly get a Service Call.

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          • Morlock49
            Trusted Tech
            100+ Posts
            • Mar 2009
            • 166

            #6
            I don't know if it will work with laser, but I use the camera on my mobile phone to check Document size sensors are working in the scanner unit. apparently the camara can "See" a wider range of the light spectrum, so maybe it can see into the infra-red.
            Sorry folks, reputation removed by Just Manuals, because he's a sad little wanker

            Comment

            • Dave10
              Trusted Tech
              100+ Posts
              • Jul 2008
              • 198

              #7
              For a relatively low cost, you can obtain a small card with a reflective surface on it that you can hold in front of an infrared laser and if it is working, it will show a spot on the surface. If you need it often enough, it's worth the investment. It's fun, too.

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              • mrwho
                Major Asshole!
                Site Contributor
                2,500+ Posts
                • Apr 2009
                • 4298

                #8
                Well, that has an advantage of not needing the laptop. But since I carry mine to all the customers, the camera I used cost me 10€ - or about $13 at current rates.
                ' "But the salesman said . . ." The salesman's an asshole!'
                Mascan42

                'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

                Ibid

                I'm just an ex-tech lurking around and spreading disinformation!

                Comment

                • mrwho
                  Major Asshole!
                  Site Contributor
                  2,500+ Posts
                  • Apr 2009
                  • 4298

                  #9
                  Originally posted by Eric1968
                  If the laser isn't emitting, you would instantly get a Service Call.
                  But I found out that the laser is emitting but it isn't drawing the printout on the drum (I posted a video here).
                  ' "But the salesman said . . ." The salesman's an asshole!'
                  Mascan42

                  'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

                  Ibid

                  I'm just an ex-tech lurking around and spreading disinformation!

                  Comment

                  • blackcat4866
                    Master Of The Obvious
                    Site Contributor
                    10,000+ Posts
                    • Jul 2007
                    • 22596

                    #10
                    Originally posted by Morlock49
                    I don't know if it will work with laser, but I use the camera on my mobile phone to check Document size sensors are working in the scanner unit. apparently the camara can "See" a wider range of the light spectrum, so maybe it can see into the infra-red.
                    I've heard about this from one of my Kyocera class instructors. My phone doesn't have a camera, but he demonstrated with several cameras in he class. It definitely works. =^..^=
                    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

                    • mrwho
                      Major Asshole!
                      Site Contributor
                      2,500+ Posts
                      • Apr 2009
                      • 4298

                      #11
                      I tried with two phones and neither could catch the laser beam. But I'll try it with the original sensors when I return from vacation. With normal paper passage sensors, sometimes you can see a faint red light with your naked eyes, so I assume the original sensors are similar, and maybe the phone cameras can see them better.
                      ' "But the salesman said . . ." The salesman's an asshole!'
                      Mascan42

                      'You will always find some Eskimo ready to instruct the Congolese on how to cope with heat waves.'

                      Ibid

                      I'm just an ex-tech lurking around and spreading disinformation!

                      Comment

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