Error U051 on Canon Printers

Failure: no print head installed. Install the print head. Cartridge Error

Solution 1:

• Press the triangle button for 5 seconds.

Solution 2:

• Reinstall the cartridges; change the cartridges if the error persists.

Solution 3:

• If the error persists: verify that the contacts on the cartridges and the ink cartridge are clean and unscratched.

• Finally, it is possible that the printhead is defective.

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