Toner Low or Prepare New Toner Cartridge.The message 'xxxxxxx.xxx can't be opened because it is from an unidentified developer.' appears on OS X v10.8.x.(where xxxxxxx.xxx is the file name.).The error message 'No Supported Devices Found' appears in Brother iPrint&Scan (mobile device).The error message 'IS052 InstallNetworkDriver' appears when installing the MFL-Pro Suite from the CD-ROM or the FullDriver & Software Package is downloaded from the 'Downloads' section.The error message 'Invalid format for short nick name' appears when printing a document.I still receive the error message 'Replace Drum', 'Drum End Soon', 'Drum Near End', or 'Drum Stop' after I replace the drum unitwith a new one.I just replaced the toner cartridge and the LCD continues to display the message 'Toner Low' / 'Replace Toner'/ 'Toner Ended' or the Toner LED is still on or flashing.I cannot attach scanned data to my email application, or the default email application is not set (CC4-121).How can I clear the 'Scanner Locked' error message?.A message appears informing to 'The optical photoconductor needs to be replaced.'Offline' appears on the Status Monitor.
