DCP-9040CN FAQs & Troubleshooting DCP-9040CN Not your product? Sort by: Updated Date Popularity 2 Results 1. 03/27/2023 "Offline" appears on the Status Monitor. 2. 03/20/2012 I still receive the error message "Replace Parts Drum" or "Drum End Soon" after I replace the drum unit with a new one. Error Messages FAQs & Troubleshooting