Brother MFC-L8850CDW - Page 6

Confidential
4.11.1 No feeding ................................................................................................... 2-123
4.11.2 Double feeding............................................................................................. 2-123
4.11.3 Paper jam .................................................................................................... 2-124
4.11.4 Document becomes wrinkled....................................................................... 2-126
4.11.5 Document size cannot be correctly detected............................................... 2-126
4.12 Scanning Image Defect Troubleshooting.............................................................. 2-127
4.12.1 Image defect examples ............................................................................... 2-127
4.12.2 Troubleshooting image defect .....................................................................2-127
4.13 Troubleshooting of FAX Functions........................................................................ 2-131
4.13.1 FAX can't send it.......................................................................................... 2-131
4.13.2 FAX cannot be received .............................................................................. 2-132
4.13.3 No bell ring .................................................................................................. 2-132
4.13.4 A communication error occurs..................................................................... 2-132
4.13.5 Receive buffer full during receiving into memory......................................... 2-133
4.14 Troubleshooting for Other Problems.....................................................................2-133
4.14.1 Cannot make print ....................................................................................... 2-133
4.14.2 Problem of USB direct interface ..................................................................2-133
4.14.3 Cannot update firmware ..............................................................................2-134
4.14.4 The machine is not turned ON.....................................................................2-134
CHAPTER 3 DISASSEMBLY AND ASSEMBLY
1. SAFETY PRECAUTIONS ..........................................................................3-1
2. PACKING....................................................................................................3-2
3. SCREW CATALOGUE ...............................................................................3-3
4. SCREW TORQUE LIST .............................................................................3-4
5. LUBRICATION ...........................................................................................3-7
6. OVERVIEW OF GEARS.............................................................................3-9
7. HARNESS ROUTING...............................................................................3-10
8. DISASSEMBLY FLOW.............................................................................3-26
9. DISASSEMBLY PROCEDURE ................................................................3-28
9.1 Lift Gear 46/Gear Z19M10........................................................................................ 3-29
9.2 Back Cover/Back Cover Stopper Arm L/Back Cover Stopper Arm R ....................... 3-30
9.3 Fuser Cover ASSY ...................................................................................................3-33
9.4 Cleaner Pinch Roller S ASSY................................................................................... 3-35
9.5 Fuser Unit ................................................................................................................. 3-37