Brother MFC-7380

ii
Confidential
4.2 Troubleshooting for Paper Feeding Problems .................................................................. 2-58
4.2.1 No paper is fed from paper tray ............................................................................ 2-58
4.2.2 No paper is fed from manual feed slot ................................................................. 2-59
4.2.3 Multiple sheets of paper are fed ........................................................................... 2-59
4.2.4 Paper becomes wrinkled ...................................................................................... 2-60
4.2.5 Paper is fed at an angle ....................................................................................... 2-60
4.2.6 Paper is curled ..................................................................................................... 2-61
4.2.7 Duplex printing is not possible .............................................................................. 2-61
4.2.8 Paper jam ............................................................................................................. 2-62
4.3 Troubleshooting for Image Defects ................................................................................... 2-66
4.3.1 Image defect examples ........................................................................................ 2-66
4.3.2 Troubleshooting according to image defect ......................................................... 2-67
4.4 Troubleshooting for Software Problems ........................................................................... 2-78
4.4.1 Cannot receive data ............................................................................................. 2-78
4.5 Troubleshooting for Network Problems ............................................................................ 2-79
4.5.1 Cannot print via network connection .................................................................... 2-79
4.5.2 Cannot connect to access point ........................................................................... 2-79
4.6 Troubleshooting for Control Panel Problems .................................................................... 2-80
4.6.1 Nothing is displayed on the LCD .......................................................................... 2-80
4.6.2 Nothing is displayed on the LED .......................................................................... 2-80
4.6.3 Control panel is inoperable ................................................................................... 2-81
4.7 Troubleshooting for Toner and Drum Problems ............................................................... 2-82
4.7.1 New toner is not detected ..................................................................................... 2-82
4.7.2 Toner cartridge cannot be recognized .................................................................. 2-82
4.7.3 Error message prompting toner cartridge replacement does not disappear ........ 2-82
4.7.4 Drum error ............................................................................................................ 2-83
4.7.5 Error message prompting drum replacement does not disappear ....................... 2-83
4.8 Troubleshooting for Fuser Unit Problems ......................................................................... 2-84
4.8.1 Fuser unit failure ................................................................................................... 2-84
4.9 Troubleshooting for Laser Unit Problems ......................................................................... 2-84
4.9.1 Laser unit failure ................................................................................................... 2-84
4.10 Troubleshooting for PCB Problems .................................................................................. 2-85
4.10.1 Main PCB failure .................................................................................................. 2-85
4.10.2 Memory full ........................................................................................................... 2-85
4.10.3 Print limit / ID authentification error ...................................................................... 2-85
4.11 Troubleshooting for Document Feeding Problems ........................................................... 2-86
4.11.1 No document is fed .............................................................................................. 2-86
4.11.2 Multiple documents are fed .................................................................................. 2-86
4.11.3 Document jam ...................................................................................................... 2-87
4.11.4 Document becomes wrinkled ............................................................................... 2-88
4.11.5 Document size is not detected correctly ............................................................... 2-88
4.12 Troubleshooting for Image Defects ................................................................................... 2-89
4.12.1 Defect examples ................................................................................................... 2-89
4.12.2 Troubleshooting according to image defect ......................................................... 2-89