A company's laser printer starts producing output with speckling across the printed pages. As a technician, you've been asked to rectify this issue. What should you investigate first?
Wipe off any external debris or dust from the printer's exterior.
Reinstall the printer drivers on all computers using the printer.
Adjust the printer settings to print in a higher resolution.
Replace or inspect the toner cartridge for defects or low toner levels.
Verify that the correct paper type is selected in the printer settings.
Check and clean the print head nozzles for any blockages.