Sharp MX-4051 User Manual - Color Advanced & Essential Series 2 - Page 168

BEFORE USING THE MACHINE►MAINTENANCE CLEANING THE LASER UNIT When the laser unit inside the machine becomes dirty, line patterns (colored lines) may form in the printed image. Identifying lines (colored lines) caused by a dirty laser unit • Colored lines always appear in the same place. (The lines are never black.) • Colored lines appear in parallel with the direction of paper feeding. • Colored lines appear not only on output from a copier but also on prints from a computer. (The same lines appear on both copies and print jobs.) If conditions similar to the above occur, clean the laser unit as explained below. 1 Open the front cover. 2 Remove the waste toner box. Press the release buttons on the sides of the waste toner box inward and pull out slowly. 3 Take out the cleaning tool for the laser unit. (2) The cleaning tool is attached to the front cover. (1) (1) Pull the right-hand side of the cleaning tool to detach it from the hook. (2) Put it over the hook to place it on the back side. Boss (3) Turn the cleaning tool around the boss to detach it from the left hand hook. 1-165