152f Plug the machine’s power cord back intothe AC power outlet first, and thenreconnect all cables and telephone linecord. Turn on the machine’s powerswitch.IMPORTANTTo avoid print quality problems, DO NOTtouch the shaded parts shown in theillustrations below.Cleaning the drum unit CIf you have print quality problems, clean thedrum unit as follows.a Turn off the machine’s power switch.Unplug the telephone line cord first, andthen unplug the power cord from the ACpower outlet.b Open the front cover and slowly take outthe drum unit and toner cartridgeassembly.IMPORTANT• We recommend that you put the drum unitand toner cartridge assembly on a clean,flat surface with a sheet of disposablepaper or cloth underneath it in case youaccidentally spill or scatter toner.• To prevent damage to the machinecaused by static electricity, DO NOT touchthe electrodes shown in the illustration.c Push down the blue lock lever and takethe toner cartridge out of the drum unit.IMPORTANT• Handle the toner cartridge carefully. Iftoner scatters on your hands or clothes,wipe or wash it off with cold water at once.• To avoid print quality problems, DO NOTtouch the shaded parts shown in theillustrations below.
