How do I clean the encoder strip on a Canon G2020 to resolve error 5100?

Power off and unplug the printer. Locate the encoder strip – it's a thin, clear plastic strip that runs horizontally behind the print head carriage. Gently wipe the strip with a soft, dry, lint-free cloth. Avoid using any liquids or excessive pressure, as the strip is delicate. Ensure the strip is completely dry before powering the printer back on.