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    How to resolve/fix error code 6942 Canon GP-300, GP-200, GP-5300, GP-5200 step by step??

    Turn off the power and unplug the power cord. Wait a moment and turn the power back on. If the error appears again, make a note of the detailed error code (ECxx-xxxx) that appears on the touch screen, and then contact a Canon customer service center.
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