Print-Quality ProblemsDell 7330 Mono Laser Printer6-64Dark Spots or MarksThere are dark spots or marks that appear in a random pattern on the page.Possible Causes SolutionsThe paper path may be contaminated with toner. Print several blank sheets of paper to remove thetoner accumulations.The drum cartridge may be defective. Replace the drum cartridge.The fuser may be defective. Replace the fuser.The transfer roller may be defective. Replace the transfer roller.
