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What is the reason why the yellow light of Canon 658o printer flashes alternately twice?

This is the case with Japanese machines that need to be removed.

Zero clearing method

A, press the restore key first, and then press the power button to start the machine.

While pressing the power button, release the resume button, and then double-click the resume button.

C. Release the power key and the recovery key at the same time, and enter the maintenance state at this time.

D after the indicator light flashes, press the resume key to select the setting function.