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Heaters not so hot

Discussion in 'Mutoh' started by GAC05, Aug 2, 2010.

  1. GAC05

    GAC05 Major Contributor

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    Dec 27, 2005
    Guam USA
    Hi all,
    need some help, I think my heaters are not working correctly.

    vj1304, oem inks, flexi8.6 rip, 7 months use - around 60 or so carts used so far.

    Print quality has been going down - seeing what looks like banding in the direction of the head movement.
    I can still get an ok print by slowing it down and upping the quality settings but I can see that something is not right.
    Did the usual troubleshooting - nozzle check - found one magenta nozzle not firing.
    Tried to clear it using - normal - strong - light charge cleaning & a head soak .
    No-go on the one nozzle - the rest are ok.
    From there I checked the head alignment - all ok.
    Did a pf adjust on the intermediate material I use for most temp prints - 1mm out
    Set and saved the adjust to media type 1
    No change in the print quality - ran the micro adjust up and down during printing (+8 to -8) - no change in the print quality.

    Reasons I think it is the heaters.
    During printing only the post heater is warm at all - the other 2 are cool to the touch
    Settings for the material run are 39pre 32platen & 45post.
    Two things that have changed with the heaters:

    1. The post heater comes on as soon as I take the printer out of sleep - there are no jobs being sent - don't think it did this before.
    2. When I send a file - as soon as the rip ends it starts printing.
    Before this quality issue started showing up, if the printer had been idle for a while it would hold the print for a few minutes until the 3 heaters warmed up then start the print.
    Now it starts as soon as the file is sent from the rip.
    I checked the temperature menu while it is printing and it shows that the pre and platen heaters are within the correct temps but if I stop the print and check by hand they do not feel even a little warm. I'm thinking 32c would not feel warm but 39 should (45 post does).
    I have tried controlling the heaters using the media type at the printer and over-riding by way of the flexi8.6 production manager.
    No change with the problem.

    What should the next step be?
    Is there a way to reset the printer back to factory defaults?
    (in case a power hiccup or something changed a setting I don't know about)
    Could that one clogged nozzle cause the print quality to degrade enough to see?

    thanks for reading

    wayne k
    guam usa
     
    Tags:
  2. Stealth Ryder

    Stealth Ryder Very Active Member

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    Jul 16, 2009
    Texas
    If you are printing on Vinyl you heaters should be somewhere around Pre-44, Plat-42, and After-50... This can vary based on room temp & humidity...

    Are you controlling the Heaters from the software or at the printer?

    If you answer software, from RIP/Print or PM Settings?

    What MB Firmware?

    What Sub-Controller Firmware?

    Check for temp in the middle of the Platen or to the far left or right?
     
  3. CheapVehicleWrap

    CheapVehicleWrap Very Active Member

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    Dec 2, 2008
    VERY strange! Your mention of the heaters coming on after unsleeping. I noticed this today on my 1614. Just went and confirmed it, yep post heater comes on. hmmm, I have never seen that before. I always control heaters from flexi. I did walk past the printer and got a small shock today. Maybe it changed heater settings in the setup....

    JUST powered it down, selected media..put to sleep, woke up. no post heat...
     
  4. GAC05

    GAC05 Major Contributor

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    Dec 27, 2005
    Guam USA
    I am using a profile (for the heat settings) that is not made for the vinyl I have but it has been working without issue for the last 6 months.

    I tried both (at least I think I have)
    When I tell the PM to use media type 1 (instead of the default "none") the heater adjustments can no longer be selected so I assume the settings I saved under media 1 are used.
    If I set the media type to none in the PM I can adjust the settings - this is the way I have been printing from the start.
    Everything is printed by dropping the files directly into the Program Manager. I don't use the main Flexi program much at all.

    As far as firmware this is what
    shows up under the "Version" menu
    Ver.M/C:2.03/1.12

    Then only way I have checked the temp is by hand before during and after a print - all across the platens - and by what is reported at the keypad window.

    thanks for the quick reply

    wayne k
    guam usa
     
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