Troubleshooting and routine maintenance137CSize mismatch The paper in the tray is not thecorrect size.Load the correct size of paper in the tray andset the “Paper Size” (Menu, 1, 2, 2). (SeePaper Size on page 24.)Toner Low If the LCD shows Toner Low,you can still print; however, themachine is telling you that thetoner cartridge is near the end ofits life.Order a new toner cartridge now.Too Many Files There are too many files storedon the USB Flash memory drive.Reduce the number of files stored on theUSB Flash memory drive.Too Many Trays More than one optional tray isinstalled.The maximum number of optional trays isone. Remove any additional trays.Unusable Device An incompatible or broken devicehas been connected to the USBdirect interface.Remove the USB Flash memory drive fromthe USB direct interface.UR Mode in Use The machine is set to UniqueRing mode. You cannot changethe Answer Mode from Manual toanother mode.Set Unique Ring to Off. (See Turning offunique ring on page 59.)Error Message Cause Action