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RF640 - Nozzle Check (Test Print) Serious trouble

Discussion in 'Roland' started by BunnyOne, Nov 24, 2020.

  1. BunnyOne

    BunnyOne Member

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    Nov 12, 2020
    FWI
    This morning you could see the test print.

    It was ok the last week. Really don't understand the mistake.

    I don't have error message, do you have any ideas ?
     

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  2. Solventinkjet

    Solventinkjet DIY Printer Fixing Guide

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    Aug 2, 2011
    Denver, CO
    Check your head cables for damage, corrosion, or ink splatter. Something is shorting out and causing the head to malfunction. It could be the head itself but it's usually a cable somewhere that's not plugged in properly or is dirty.
     
  3. BunnyOne

    BunnyOne Member

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    Nov 12, 2020
    FWI
    Hello,

    Thank you for your help. I just clean & check the 4 cables on the head, still the same Problem. May be I have to check the "head board" ?
     
  4. BunnyOne

    BunnyOne Member

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    Nov 12, 2020
    FWI
    There is a lot of ink in the cap. Like the machine didn't pump before printing.
     
  5. BunnyOne

    BunnyOne Member

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    Nov 12, 2020
    FWI
    I try to print the test print in the middle of large size, after un light cleaning (to pump the ink), i had a 0110 error message, and now there is still a lot of ink in the cap.
     
  6. balstestrat

    balstestrat Active Member

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    Aug 25, 2020
    Between the bits
    0110
    Read error of Linear Encoder
    Read error of Encoder on Scan Motor side.
    Belt is not fixed to Head Carriage firmly.
     
  7. BunnyOne

    BunnyOne Member

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    Nov 12, 2020
    FWI
    Thank you for you answer.

    I clean the linear encoder, same Problem.
    I re-clean the linear encoder + Service mode test linear encoder (check), same Problem.
    I change the sensor of the linear encorder (under the print carriage board) + Service mode test linear encoder (check), same Problem.

    I don't have ideas.
     
  8. BunnyOne

    BunnyOne Member

    26
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    Nov 12, 2020
    FWI
    Upade

    I change the linear encorder, same issue.
     
  9. jimboeejit

    jimboeejit Member

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    Apr 30, 2020
    uk
    ink pump maybe?...inklines clogged causing no pull...will leave a buildup of ink around the cap/head...
     
  10. kanini

    kanini Member

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    Jul 13, 2012
    Finland
    Just a long shot; is the choke valve in correct position (the RF640 does have a choke valve, doesn't it?)? If you've used that, if not disregard this post.
     
  11. BunnyOne

    BunnyOne Member

    26
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    Nov 12, 2020
    FWI
    After many try.
    I don't know why but sometimes there is ink in the captop (after a single cleaning it's ok).
    I changed the linear encoder, still have some trouble but it's really weird, because when I print a file from Versaworks, it's ok except all the print Area is black (like the 1st Picture).

    So I think it's the head print, but I want to be sure. A bad head print could create linear error ?
     
  12. Jim Hancock

    Jim Hancock Active Member

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    Nov 11, 2008
    Delray Beach, Florida
    The first thing you need to do is to clear the lines between the cap and the pump. Ink remaining in the cap is an indication of a clogged line. Once that is done, post the results.
     
  13. BunnyOne

    BunnyOne Member

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    Nov 12, 2020
    FWI
    I résolve the Problem with a new bulk ink system with 2 liters bags.
     
  14. Jim Hancock

    Jim Hancock Active Member

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    Nov 11, 2008
    Delray Beach, Florida
    Great! Thanks for updating everyone!
     
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