Tianna, an administrative assistant, has noticed the print quality of her locally connected laser printer has been gradually declining. Sometimes the printing is wavy and other times it appears speckled. She is asked to urgently print $10$ copies of a $15-$page document for an important meeting because the copy machine is being serviced. Since she cannot risk generating poor quality printouts, she calls you at the help desk.

What would you do first to try to fix the problem quickly? Select two.

a$.$ Replace the stepper motor that moves the print head.

b$.$ Print a self$-$test via the console on the printer.

c$.$ Initiate the calibration sequence on the printer.

d$.$ Remove the fuser unit and clean the fuser rollers.

e$.$ Replace the toner cartridge on the printer.