Brother MFCL3745CDW - CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING; 3. ERROR INDICATIONS; 4. TROUBLESHOOTING

Confidential
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3.2.2 Touch panel models......................................................................................... 2-42
3.3 Communication Errors.............................................................................................. 2-58
4. TROUBLESHOOTING .............................................................................2-62
4.1 Error Cause and Remedy......................................................................................... 2-62
4.2 Troubleshooting for Paper Feeding Problems ........................................................ 2-106
4.2.1 No paper feeding from T1.............................................................................. 2-106
4.2.2 No paper feeding from MP tray ..................................................................... 2-107
4.2.3 No paper feeding from manual feed slot ....................................................... 2-108
4.2.4 Multiple sheets of paper are fed .................................................................... 2-108
4.2.5 Paper becomes wrinkled ............................................................................... 2-109
4.2.6 Paper is fed at an angle................................................................................. 2-109
4.2.7 Paper curls .................................................................................................... 2-109
4.2.8 Unable to perform 2-sided printing ................................................................ 2-110
4.2.9 Paper jam .......................................................................................................2-111
4.3 Troubleshooting for Image Defects......................................................................... 2-116
4.3.1 Image defect examples ................................................................................. 2-116
4.3.2 Troubleshooting image defect ....................................................................... 2-117
4.4 Troubleshooting for Software Problems ................................................................. 2-136
4.4.1 Unable to receive data................................................................................... 2-136
4.5 Troubleshooting for Network Problems .................................................................. 2-137
4.5.1 Cannot make a print through network connection .........................................2-137
4.5.2 Cannot connect to access point .................................................................... 2-137
4.6 Troubleshooting for Control Panel Problems..........................................................2-138
4.6.1 Nothing is displayed on the LCD ...................................................................2-138
4.6.2 Nothing is displayed on the LED ................................................................... 2-138
4.6.3 Unable to perform panel operation ................................................................ 2-139
4.7 Troubleshooting for Toner Cartridge and Drum Unit Problems...............................2-140
4.7.1 New toner not detected ................................................................................. 2-140
4.7.2 Toner cartridge not detected.......................................................................... 2-140
4.7.3 Toner replacement message displayed on LCD is not cleared ..................... 2-140
4.7.4 Drum error ..................................................................................................... 2-141
4.7.5 Drum replacement message displayed on LCD is not cleared...................... 2-141
4.8 Troubleshooting for Fuser Unit Problems ...............................................................2-142
4.8.1 Fuser unit failure............................................................................................ 2-142
4.9 Troubleshooting for LED ASSY Problems ..............................................................2-142
4.9.1 LED ASSY failure ..........................................................................................2-142
4.10 Troubleshooting for PCB Problems ...................................................................... 2-143
4.10.1 Main PCB failure.......................................................................................... 2-143