- I don't think I got the full yield from my high-yield toner cartridge but the message "Toner Life End" or"Replace Toner" is displayed on the machine or the LED is on or flashing.
- I just replaced the toner cartridge and the LCD continues to display the message "Toner Low" / "Replace Toner"/ "Toner Life End" or the Toner LED is still on or flashing.
- 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 Fuser cover is securely closed, however the Status LED is on in Red. what can I do?
- The message "[file name] can't be opened because it is from an unidentified developer." appears on OS X v10.8.x.
- There is no jammed paper in the machine, but still the Paper LED is ON or Flashing.
- 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?