4 Using a damp cloth that you have wrung out com-pletely, wipe away dirt or paper dust (debris fromcutting) inside the Top Cover.Wipe away any ink residue and paper dust (debrisfrom cutting) on the Top Cover Roller (a), all overthe Platen (b), the Paper Retainer (c), the Border-less Printing Ink Grooves (d), the Ejection Guide(e), the blue Switch (f), the section around the right-side Borderless Printing Ink Grooves (g), and soon.Warning• Never use flammable solvents such as alcohol, benzene, or thinner. If these substances come into con-tact with electrical components inside the printer, there is a risk of fire or electrical shock.Important• Do not use a dry cloth to wipe inside the Top Cover. This may create a static charge, which may attractdust and affect the printing quality.• Do not touch the clear sheet on the side of the Top Cover Roller. This may damage the roller.5 Close the Top Cover.6 Install the Stacker on the printer.(See "Installing and Removing the Stacker On the Printer.") ➔P.30Cleaning the PrintheadCleaning the PrintheadIf printing is faint, cleaning the Printhead may improve results.Choose one of two Printhead cleaning modes ( Head Cleaning A or Head Cleaning B ), depending on the prob-lem to resolve.cb fdegaiPF850 Series Cleaning the PrintheadBasic GuideConsumables and Maintenance Cleaning the Printer61