<ol><li>Replace the black drum cartridge. For details, refer to <a href="#" class="contentInlineLink KnowledgeSolutionED" id="x_versant80_en-O2937" lang="en" data-version="7.0"><span data-mce-style="text-decoration: underline;" style="text-decoration: underline;">Replace Drum Cartridge</span>.</a></li><li>If the fault remains, contact Support to place a service call.</li></ol>