Brother MFC-L6902DW - Page 5

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Confidential
4.2.4 No paper is fed from MP tray ............................................................................... 2-85
4.2.5 Multiple sheets of paper are fed ........................................................................... 2-86
4.2.6 Paper becomes wrinkled ...................................................................................... 2-86
4.2.7 Paper is fed at an angle ....................................................................................... 2-87
4.2.8 Paper is curled ..................................................................................................... 2-88
4.2.9 Duplex printing is not possible .............................................................................. 2-88
4.2.10 Paper jam ............................................................................................................. 2-89
4.3 Troubleshooting for Image Defects ................................................................................... 2-95
4.3.1 Image defect examples ....................................................................................... 2-95
4.3.2 Troubleshooting according to image defect ......................................................... 2-96
4.4 Troubleshooting for Software Problems ......................................................................... 2-108
4.4.1 Cannot receive data ........................................................................................... 2-108
4.5 Troubleshooting for Network Problems .......................................................................... 2-109
4.5.1 Cannot print via network connection .................................................................. 2-109
4.5.2 Cannot connect to access point ......................................................................... 2-109
4.6 Troubleshooting for Control Panel Problems .................................................................. 2-109
4.6.1 Nothing is displayed on the LCD ........................................................................ 2-109
4.6.2 Nothing is displayed on the LED ........................................................................ 2-110
4.6.3 Control panel is inoperable ................................................................................. 2-110
4.7 Troubleshooting for Toner and Drum Problems ............................................................. 2-111
4.7.1 New toner is not detected ................................................................................... 2-111
4.7.2 Toner cartridge cannot be recognized ................................................................ 2-111
4.7.3 Error message prompting toner cartridge replacement does not disappear ...... 2-111
4.7.4 Drum error .......................................................................................................... 2-112
4.7.5 Error message prompting drum replacement does not disappear ..................... 2-112
4.8 Troubleshooting for Fuser Unit Problems ....................................................................... 2-113
4.8.1 Fuser unit failure ................................................................................................. 2-113
4.9 Troubleshooting for Laser Unit Problems ....................................................................... 2-113
4.9.1 Laser unit failure ................................................................................................. 2-113
4.10 Troubleshooting for PCB Problems ................................................................................ 2-114
4.10.1 Main PCB failure ................................................................................................ 2-114
4.10.2 Memory full ......................................................................................................... 2-114
4.11 Troubleshooting for Document Feeding Problems ......................................................... 2-115
4.11.1 No document is fed ............................................................................................ 2-115
4.11.2 Multiple documents are fed ................................................................................ 2-115
4.11.3 Document jam .................................................................................................... 2-115
4.11.4 Document becomes wrinkled ............................................................................. 2-116
4.11.5 Document size is not detected correctly ............................................................. 2-117
4.12 Troubleshooting for Image Defects ................................................................................. 2-118
4.12.1 Defect examples ................................................................................................. 2-118
4.12.2 Troubleshooting according to image defect ....................................................... 2-118
4.13 Troubleshooting for Fax Problems .................................................................................. 2-122
4.13.1 Fax cannot be sent ............................................................................................. 2-122
4.13.2 Fax cannot be received ...................................................................................... 2-123