Welcome To Signs101.com: Largest Forum for Signmaking Professionals

Signs101.com: Largest Forum for Signmaking Professionals is the LARGEST online community & discussion forum for professional sign-makers and graphic designers.

 


  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Question VJ1204 pump issue?

Discussion in 'Mutoh' started by CP Signs, Aug 17, 2018.

  1. CP Signs

    CP Signs Member

    365
    0
    16
    Sep 15, 2012
    Stittsville
    Hello. Having a little issue. Changed the maintenance station 2 weeks ago ( second one in 6 years, not bad ), printer worked great for the 2 weeks. Yesterday, went to print and barely had color down on media. So no problem I thought, seen it before... took the capping off, cleaned all the tubes, removed the gooey in the lines. Put it back together and went to do a cleaning and that's when I notice no ink was being sucked in the tubes down to waste tank. I put cleaning solution on the cap and the solution comes down the tubes. So I tried to take it apart again and put it back in case it wasn't sitting properly and not creating a suction. Did another cleaning and no inks down the tubes. I've read tons of posts here and some mention the F2 fuse? If so, where is the main board located? I've done maintenance on this machine for 6 years but never was in this situation. Thanks for any help
     
  2. Solventinkjet

    Solventinkjet Former Merchant Member

    3,340
    569
    113
    Aug 2, 2011
    Denver, CO
    The fuse doesn't stop ink from flowing. It stops the head from firing so if it is bad the maintenance station will still pull ink through with no problem. You most likely just need a new cap top. They wear out and stop making a proper seal with the head. Also, make sure to clean any ink build up on the bottom of the head to make sure it's not breaking the seal with the cap top.
     
  3. CP Signs

    CP Signs Member

    365
    0
    16
    Sep 15, 2012
    Stittsville
    Thanks for the reply. Cap top is 2 weeks old. Worked for the 2 weeks, yesterday it worked all day and then stopped. Print head is soaking now. What troubles me is the last print was flawless and 10 minutes later it stopped. Thanks
     
  4. Solventinkjet

    Solventinkjet Former Merchant Member

    3,340
    569
    113
    Aug 2, 2011
    Denver, CO
    I would cap the head, bend one of the waste tubes and tape it so it doesn't unbend and then hook a syringe up to the other tube and pull. If you pull and get no resistance and just suck air, either the cap top is not lined up correctly (which is near impossible), the cap top is bad or defective, or air is coming in from somewhere else. When you pull you should feel resistance and then ink flow quickly after. If you get a ton of resistance and not ink, there is a clog somewhere. Other than that, there isn't much else it could be other than possible a failing pump.
     
  5. CP Signs

    CP Signs Member

    365
    0
    16
    Sep 15, 2012
    Stittsville
    Thanks. I will go and try this out.
     
  6. CP Signs

    CP Signs Member

    365
    0
    16
    Sep 15, 2012
    Stittsville
    Alright. I bent and taped 1 tube, used my syringe... got a bit of resistance followed by lots of ink. I switched it and did the other tube and same result. Connected everything back together, did a cleaning and saw some ink come out of the tube.Did a second cleaning and no more ink!
     
  7. Solventinkjet

    Solventinkjet Former Merchant Member

    3,340
    569
    113
    Aug 2, 2011
    Denver, CO
    Unfortunately that seems to point to the pump not working. It sounds like the suction is working properly so the only thing left is the pump. If it's an after market one, a couple months back our supplier sent some that just plain didn't work. They looked the same and sounded like they were working but no ink would flow. We switched suppliers and everything went back to normal. Perhaps you got a bad one?
     
  8. CP Signs

    CP Signs Member

    365
    0
    16
    Sep 15, 2012
    Stittsville
    That's what I'm thinking. I just emailed the company. The new printer should be here in a week,,, but a week with no printing is deadly! Thanks for all the help.
     
  9. RG

    RG Member

    436
    7
    18
    Dec 6, 2006
    South Mississippi
    Did you check the 2 black tubes under the fixture that holds the cap top? These 2 tubes carry ink form the cap top to the pump. One or both could be plugged up. Also, take the fixture off ( there are only 2 screws holding it in place), and make sure that air flows freely through the air tube that's on the under side of this fixture. And, try filling your pump tubes with cleaning fluid, pinching them off at the bottom end, and let them soak over night.
     
  10. CP Signs

    CP Signs Member

    365
    0
    16
    Sep 15, 2012
    Stittsville
    Hi. Thanks for the reply. Yes, all that was done. That's why we are thinking a bad pump,,, it's new.
     
Loading...

Share This Page

 


Loading...