An end user contacted a technician about a laser printer that was no longer printing images on the left side of the page. The technician replaced the toner cartridge, but the issue has persisted. Whic

The imaging drum (or photosensitive drum) is responsible for attracting toner and transferring the image to the paper; if it has a defect or wear on one side, it will result in missing or faded parts of the image on that specific area of the page. Since the toner was replaced and the issue persists, the drum is the next logical component to address for print quality issues.

Misaligned pickup rollers would primarily cause paper jams or paper feeding issues, not partial image printing on one side of the page.

Cleaning the duplexing assembly would address issues with two-sided printing, which is not described as the problem.

Calibrating the printer typically adjusts color accuracy or print head alignment (for inkjet printers), which is unlikely to resolve a consistent blank strip on one side of a laser printout.