Brother MFC-J4420DW Manuel d'entretien - Page 6
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4.7.4
Wrinkles on documents............................................................................... 2-78
4.7.5
Document size not correctly detected ......................................................... 2-78
4.8
Scanned-image Problems ................................................................................... 2-79
4.8.1
Defective images ........................................................................................ 2-79
4.8.2
Troubleshooting from image defect............................................................. 2-79
4.9
Fax Problems ...................................................................................................... 2-83
4.9.1
No faxes can be sent .................................................................................. 2-83
4.9.2
No faxes can be received............................................................................ 2-83
4.9.3
A communications error occurs................................................................... 2-84
4.10 Other Problems ................................................................................................... 2-85
4.10.1 The machine cannot be powered on........................................................... 2-85
4.10.2 Memory card/PictBridge does not function (no response) .......................... 2-85
4.10.3 Data of memory card/PictBridge does not read .......................................... 2-85
4.10.4 Internal memory errors................................................................................ 2-86
4.10.5 Security Function Lock related problems .................................................... 2-86
4.10.6 Remaining ink related problems.................................................................. 2-86
4.10.7 Ink absorber box related problems.............................................................. 2-86
CHAPTER 3 DISASSEMBLY AND ASSEMBLY ............................................................... 3-1
1
PRECAUTIONS BEFORE PROCEEDING .................................................................... 3-1
2
PACKING ....................................................................................................................... 3-3
3
SCREW CATALOGUE................................................................................................... 3-4
4
SCREW TORQUE LIST ................................................................................................. 3-5
5
LUBRICATION ............................................................................................................... 3-6
6
OVERVIEW OF GEARS............................................................................................... 3-11
7
ROUTING OF HARNESSES AND INK SUPPLY TUBES ........................................... 3-12
8
DISASSEMBLY FLOW ................................................................................................ 3-18
9
DISASSEMBLY PROCEDURE.................................................................................... 3-19
9.1
Preparation .......................................................................................................... 3-19
9.2
Scanner Cover Damper and Scanner Cover Support ......................................... 3-24
9.3
ADF Unit and Document Scanner Unit................................................................ 3-26
9.4
ADF Hinge R, L ................................................................................................... 3-31
9.5
ADF Document Support ...................................................................................... 3-32
9.6
ADF Cover ASSY ................................................................................................ 3-33
9.7
ADF Separation Pad Holder ASSY ..................................................................... 3-34
iii
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