Need input on fix for a dinosaur, Ricoh FT3313

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  • femaster
    Service Manager

    1,000+ Posts
    • May 2011
    • 1458
    #1

    Need input on fix for a dinosaur, Ricoh FT3313

    Having an issue with a donated machine at a non-profit. Machine is an antique Ricoh FT3313 Analog machine.

    Problem they are having is that when the machine is left in auto exposure mode, it's copying too dark. Matter of fact, it's copying too good, so good in fact, that it's copying the text from the BACK SIDE of the copy along with the text on the front side. If they manually turn the darkness of the copies all the way down, the machine makes perfect copies.

    I'm guessing that the intensity of the lamp is too high. Are there any settings I can make to resolve the issue? Close up the shading plates a bit, maybe dirty "white balance" strip, etc.? Is there anything else I should look at, perhaps it's not related to the lamp intensity at all?

    I don't have a lot of knowledge on the old analog machines, so I thought I ask for advice on where to start with this one.
    A Ricoh Service Tech for 7 year. A Konica Minolta Service Tech for 7 years. Now, KM service manager for 4 years.
    My Ricoh knowledge is slowly dwindling away at this point. Many things have been lost to time...
    Tags: None
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22927
      #2
      Re: Need input on fix for a dinosaur, Ricoh FT3313

      No. I'm guessing that by this time the machine is massively overtoned, typical of this particular beast. And there aren't any parts to be had, that I know of. =^..^=
      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

        • sandmanmac
          Field Supervisor

          Site Contributor
          2,500+ Posts
          • Feb 2009
          • 3963
          #3
          Re: Need input on fix for a dinosaur, Ricoh FT3313

          Originally posted by femaster
          Having an issue with a donated machine at a non-profit. Machine is an antique Ricoh FT3313 Analog machine.

          Problem they are having is that when the machine is left in auto exposure mode, it's copying too dark. Matter of fact, it's copying too good, so good in fact, that it's copying the text from the BACK SIDE of the copy along with the text on the front side. If they manually turn the darkness of the copies all the way down, the machine makes perfect copies.

          I'm guessing that the intensity of the lamp is too high. Are there any settings I can make to resolve the issue? Close up the shading plates a bit, maybe dirty "white balance" strip, etc.? Is there anything else I should look at, perhaps it's not related to the lamp intensity at all?

          I don't have a lot of knowledge on the old analog machines, so I thought I ask for advice on where to start with this one.
          You're on the right track.
          Sadly, I'm old enough to remember this little beast. The problem is Dirty optics. It's the opposite of digital machines. The less light, the darker the copy. You can see this if you lighten and darken the exposure while scanning, the lamp will go up and down. The problem is, after cleaning the mirrors, (also remove the lens cover and clean the back mirrors, and front and back of the lens too), the adjustment of the 'auto exposure' is way to complex to remember. You had to enter service mode ( dip switch 2 on MPCB i think), then run a simulation while tweaking a 'pot' on the mother board until the exposure LED's stayed in the middle on the operation panel.
          My best suggestion is that, if you clean the optics, "maybe" the Auto exposure will improve ( but I doubt it)? But if not, 'Manual exposure' should be better

            Comment

            • femaster
              Service Manager

              1,000+ Posts
              • May 2011
              • 1458
              #4
              Re: Need input on fix for a dinosaur, Ricoh FT3313

              Originally posted by sandmanmac
              You're on the right track.
              Sadly, I'm old enough to remember this little beast. The problem is Dirty optics. It's the opposite of digital machines. The less light, the darker the copy. You can see this if you lighten and darken the exposure while scanning, the lamp will go up and down. The problem is, after cleaning the mirrors, (also remove the lens cover and clean the back mirrors, and front and back of the lens too), the adjustment of the 'auto exposure' is way to complex to remember. You had to enter service mode ( dip switch 2 on MPCB i think), then run a simulation while tweaking a 'pot' on the mother board until the exposure LED's stayed in the middle on the operation panel.
              My best suggestion is that, if you clean the optics, "maybe" the Auto exposure will improve ( but I doubt it)? But if not, 'Manual exposure' should be better
              Yeah, I was looking at the service manual, and it definately looked complicated. I've done the basics on the old analog machines (cleaning optics, replacing feed rollers, adjusting shading plates, etc.) but nothing this advanced. I'm doing the work for free, so I didn't want to spend a ton of time on it trying to figure out what was going on. Thanks for the info, will probably save some time trying to tweak it a bit and get it as best I can without putting any non-existent parts into it...
              A Ricoh Service Tech for 7 year. A Konica Minolta Service Tech for 7 years. Now, KM service manager for 4 years.
              My Ricoh knowledge is slowly dwindling away at this point. Many things have been lost to time...

                Comment

                • Max
                  Senior Tech

                  500+ Posts
                  • Oct 2011
                  • 545
                  #5
                  Re: Need input on fix for a dinosaur, Ricoh FT3313

                  .Clean the optics including the lamp. Take it out if you can and clean the reflector.You will need to reset VL correction SP 6X or 9X cant remember exactley ( may or may not have it) then set vsp and vsg by (2.5v and 4.0V)adjusting the pots on the main board sp 54 and 56. If copier has a zoom function its easier to do if not you need to use lighter darker scale for setting it up.Without a manual and if you never done it before will be very hard.Or there should be adjustable pot on PSU clockwise will make the lamp brigher (not recomended). Drum may be past its life 100k at best then nothing you can do. SP 48 sets the lamp voltage 150 is max.If the copy is still dark after cleaning the optics use sp 48.

                    Comment

                    • blaze2000
                      Trusted Tech

                      Site Contributor
                      100+ Posts
                      • Sep 2010
                      • 232
                      #6
                      Re: Need input on fix for a dinosaur, Ricoh FT3313

                      I'm trying to recall, but isn't this one of the models with the adjustable "shutters" that can be slid back and forth to adjust exposure levels? This model is just kinda blending into my brains fuzzy archive system mixing with the other analogs. I know too that models in this range were touchy if the charge and transfer coronas were not pristine. Just some thoughts, I know you can adjust the exposure levels in service mode but have no other recollection than just that.

                        Comment

                        • challengedavid
                          #7
                          Re: Need input on fix for a dinosaur, Ricoh FT3313

                          Seem to remember something about holding the auto exposure key down for a few secs and then being able to set the default level for auto exposure

                            Comment

                            • femaster
                              Service Manager

                              1,000+ Posts
                              • May 2011
                              • 1458
                              #8
                              Re: Need input on fix for a dinosaur, Ricoh FT3313

                              Thanks for the additional input on this. I've not been back to it yet, but once I get the opportunity I'll give everyone's advice a go, starting with the easiest stuff first...

                              Very thankful for all the info provided!
                              A Ricoh Service Tech for 7 year. A Konica Minolta Service Tech for 7 years. Now, KM service manager for 4 years.
                              My Ricoh knowledge is slowly dwindling away at this point. Many things have been lost to time...

                                Comment

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