- Drum Life End Soon
- The Drum LED is still on or flashing after I replace the drum unit with a new one.
- The error message "Invalid format for short nick name" appears when printing a document. (Mac OS X 10.5 or greater)
- The error message "No Supported Devices Found" appears in Brother iPrint&Scan (mobile device).
- The message "[file name] can't be opened because it is from an unidentified developer." appears on OS X v10.8.x.
- The Toner LED is still on or flashing after replacing the toner cartridge, or the status monitor continues to display the message"Toner Low" or "Toner Life End".
- What do the LED indications mean?
- When I run the Firmware update tool or the I-FAX install tool, the "Program failed to run" message appears on my PCscreen. What do I do?