Question about Canon PIXMA MP780 All-In-One InkJet Printer

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Error code u52

How do i fix this error code?

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I solved this on mine by removing and reinstalling the print head.
1. Remove and set aside the ink cartidges (don't make a mess)
2. lift the gray print head lock lever that is to the left of where the ink cartridges go.
3. Lift out the print head out without touching the ink ports inside, the contacts on the back, or the print nozzles on the bottom. The print head is the grey thing with circular ink ports that seat the ink cartridges. you can find good pictures in the below service manual get it it will be helpful you can download it from the below link:
http://goo.gl/abjVvi
good luck

Posted on Jul 31, 2013

Testimonial: "after doing what you suggested, i still get the same error code, even without putting the ink cartridges back in. i believe it is 'done for'."

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I have problem with my mp600, in the lcd displayed error code u52. how to fix it?


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The solution is follow the directions given in the Easy Setup Instructions to install the Print Head.

If the Print Head is already installed, remove the Print Head once and then reinstall it.

If the error is not resolved, the Print Head may be damaged and may need replacing.

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