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MG7550 clogged pigment black

Discussion in 'Canon InkJet Printers' started by iml, Jul 15, 2017.

  1. Jul 25, 2017
    stratman

    stratman Printer VIP Platinum Printer Member

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    Congratulations, iml!

    Print something every week or so that uses all the cartridges, such as a nozzle check.

    If a syringe or similar device does not reach the Pigment Black purge pad then maybe a soda straw might. Dip one end into liquid to passively fill it, place thumb or finger over the top end to keep fluid in the straw, use a flashlight to help guide the straw to the purge pad, release thumb/finger to let liquid leave the straw onto the purge pad. Maybe one of those bendable straws might facilitate the job.

    [​IMG]
     
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  2. Jul 26, 2017
    PeterBJ

    PeterBJ Printer VIP Platinum Printer Member

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    For flooding the purge pads for purge unit testing I use a squeeze bottle with a 3" 20g blunt needle attached.
     
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  3. Jul 26, 2017
    The Hat

    The Hat Printer VIP Moderator

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    I use a syringe with a 12-cm blunt needle and a flash light, while the print head sits right over to the left side of the machine... ;)
     
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  4. Feb 13, 2019
    Marcello

    Marcello Printing Apprentice

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    I need your help. I'd like to repair my printer. I unclog my purge unit but my stupidity...I broke the sponge unit (where the printheads stay) and loose one of the springthat stay under. If someone can help me...I dont know the code of the broken object and so I can't buy it. Actually I can't buy a new printer so ...thanks in advance.
     

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  5. Feb 13, 2019
    The Hat

    The Hat Printer VIP Moderator

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    @Marcello, That’s a bummer what that happens, but one of the ways you can get a new piece made is by using a 3D printer, do you know anyone with such a printer that could make you a new piece..
     
  6. Mar 6, 2019
    Marcello

    Marcello Printing Apprentice

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    Hi The Hat.
    I repair the sponge unit (where the printheads stay) after buying a broken mg5250 for 5 euros. All went well but now when I power on the printer aan error messages display...
    "the front cover is open. please close and then ok".
    What can I do? I believe that all is mounted well. Maybe there is a sensor? Near the mechanism that open the front door?
    Wait for your help.
    Thanks in advance. Marcello.

    Update. I have lost the disk near the eject encoder sensor. I have another so is there someone that can send me the exact manner to insert? when the door goes to open what simbol and where?
    This printer is a nightmare. But I'm so near ...

    to be clear I can update foto.
     
    Last edited: Mar 6, 2019
  7. Mar 6, 2019
    The Hat

    The Hat Printer VIP Moderator

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    @Marcello, you could try unplugging the printer from the wall socket and leave it off for 5 minutes and then power it on again to see if the error has gone...
     
  8. Mar 7, 2019
    PeterBJ

    PeterBJ Printer VIP Platinum Printer Member

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    @Marcello I think the problem with the open door error message is caused by a dirty or defective sensor. See pages 59/62 and 60/62 in the service manual. The sensor is position 2. The service manual for the MG5200 series printer is found here. I checked the downloaded manual with both AVG Internet Security and Malwarebytes Antimalware and nothing wrong was found.

    The sensor is probably a microswitch of the same type as used on older Canon printer models. It is very fiddly but the switch can be opened and cleaned. See this post. You might have to make the images from the post lighter using an image handling program.

    Dont try to unsolder the switch, see this post.
     
    Last edited: Mar 7, 2019
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