How to resolve/fix error code 6910 Canon GP-300, GP-200, GP-5300, GP-5200 step by step??

Tôi đang tìm hiểu về giải pháp cho vấn đề liên quan đến. Máy in model GP-300, GP-200, GP-5300, GP-5200 gặp lỗi "A printer error has occurred."... Cần how to resolve/fix error code 6910 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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