Brother DCP-7090 Service Manual page 6

4.13.3 Communication error occurs .............................................................................. 2-114
4.13.4 Receive buffer full during receiving into memory ............................................... 2-114
4.14 Troubleshooting for Other Problems ............................................................................... 2-115
4.14.1 Cannot make print .............................................................................................. 2-115
4.14.2 Cannot update firmware ..................................................................................... 2-116
4.14.3 "Paper Low" message does not disappear ......................................................... 2-116
4.14.4 Message indicating that the report is full does not disappear ............................ 2-117
4.14.5 Paper tray cannot be recognized ....................................................................... 2-117
CHAPTER 3 DISASSEMBLY/REASSEMBLY
1. SAFETY PRECAUTIONS ............................................................................................................ 3-1
2. PACKING .................................................................................................................................... 3-2
3. SCREW CATALOGUE ................................................................................................................ 3-3
4. SCREW TORQUE LIST .............................................................................................................. 3-4
5. LUBRICATION ............................................................................................................................ 3-6
6. OVERVIEW OF GEARS .............................................................................................................. 3-7
7. HARNESS ROUTING .................................................................................................................. 3-9
8. DISASSEMBLY FLOW CHART ................................................................................................ 3-22
9. DISASSEMBLY PROCEDURE ................................................................................................. 3-23
9.1 Preparation ....................................................................................................................... 3-23
9.2 Cord hook ......................................................................................................................... 3-25
9.3 Back cover ........................................................................................................................ 3-26
9.4 Outer chute ASSY ............................................................................................................ 3-27
9.5 Front cover ASSY / Support flap ....................................................................................... 3-28
9.6 Side cover R ..................................................................................................................... 3-31
9.7 Fuser cover ....................................................................................................................... 3-32
9.8 Inner chute ASSY ............................................................................................................. 3-33
9.9 Side cover L / Speaker harness ASSY /
Handset holder ASSY (For models with Handset) ............................................................ 3-34
9.10 Document scanner unit ..................................................................................................... 3-37
9.11 ADF unit (For models with ADF) ....................................................................................... 3-40
9.11.1 ADF unit ............................................................................................................... 3-40
9.11.2 ADF cover ASSY / Document stopper ................................................................. 3-43
9.11.3 Document sub tray ............................................................................................... 3-44
9.11.4 Document separate roller ASSY .......................................................................... 3-46
9.11.5 ADF separation holder ASSY ............................................................................... 3-47
9.11.6 Second side CIS unit / Second side CIS flat cable
(Only for models with duplex scanning) ............................................................... 3-48
9.12 Document cover ASSY (For models without ADF) ........................................................... 3-53
9.13 Panel unit (For Touch panel models) ................................................................................ 3-55
9.13.1 Panel unit ............................................................................................................. 3-55
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