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Heaters not so hot

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

  1. GAC05

    GAC05 Major Contributor

    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
  2. Stealth Ryder

    Stealth Ryder Very Active Member

    Jul 16, 2009
    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

    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

    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

    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