Print Quality is Poor or Contains Errors 147TroubleshootingPrinted Surface is Scratchedn Ensure you are using suitable paper.• The paper weight must be less than 105 g/m2 (28 lb).If you use non-Canon brand paper heavier than 105 g/m2 (28 lb), the print head mayscratch the printed surface.Clean the print head first and print with the correct paper.• The paper must not be curled.This problem can be resolved by simply turning the paper over.n Before starting Borderless Printing, check the paper that you are using.With Borderless Printing, the print quality may decrease or smudging may occur at thetop and bottom edges of the paper.Use Photo Paper Pro or Glossy Photo Paper. If smudging still occurs, set the PaperThickness Lever to the right and try printing again.n When printing on thick paper, set the paper thickness lever to the " " mark.This widens a gap between the print head and the paper. If the paper is scratched evenwhen printing on plain paper, also try this.If you print a document without using the computer, error 102 or 103 will be displayed on theoperation panel. However, you can still start printing by pressing the Print button again.