A network printer will not print. The printer is online and visible. All the print jobs complete but the printer will not operate. Which of the following is the MOST likely cause?

A faulty drum causes print quality defects such as streaks or blank areas, not a complete failure to print while jobs appear to succeed.

When the print buffer - the printer's internal memory that holds job data before printing - is full, the printer cannot accept additional data from the print spooler. The OS spooler marks jobs as completed after handing them off, so the queue appears clear even though the printer has no capacity to process the work. Clearing the printer buffer, typically by power-cycling the device, resolves this condition.

An out-of-toner condition causes the printer to display a toner-low or toner-empty alert and would not result in jobs appearing to complete successfully.

A faulty fuser causes paper jams or unfused toner smearing on output, not a silent failure to print.