Brother DCP-J552DW Service Manual page 6

4.7.1 Document cannot be fed ............................................................................ 2-74
4.7.2 Document double feeding .......................................................................... 2-74
4.7.3 Document jam ............................................................................................ 2-75
4.7.4 Wrinkles on documents .............................................................................. 2-77
4.7.5 Document size not correctly detected ........................................................ 2-77
4.8 Scanned-image Problems .................................................................................. 2-78
4.8.1 Defective images ........................................................................................ 2-78
4.8.2 Scanned-image Problems .......................................................................... 2-78
4.9 Fax Problems ..................................................................................................... 2-82
4.9.1 Fax sending cannot be performed ............................................................. 2-82
4.9.2 Cannot receive fax ..................................................................................... 2-82
4.9.3 A communications error occurs .................................................................. 2-82
4.10 Other Problems .................................................................................................. 2-83
4.10.1 The machine cannot be powered on .......................................................... 2-83
4.10.2 Memory card/PictBridge does not function (no response) ......................... 2-83
4.10.3 Memory card/PictBridge data cannot be read ............................................ 2-83
4.10.4 Internal memory errors ............................................................................... 2-84
4.10.5 Security function lock related problems ..................................................... 2-84
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 ................................................................................................ 3-8
7 ROUTING OF HARNESSES AND INK SUPPLY TUBES ............................................ 3-9
8 DISASSEMBLY FLOW ............................................................................................... 3-20
9 DISASSEMBLY PROCEDURE ................................................................................... 3-21
9.1 Preparations ....................................................................................................... 3-21
9.2 Jam Clear Cover ................................................................................................. 3-25
9.3 The Head/Carriage Unit, CR Timing Belt, and Leveler Roller ASSY .................. 3-26
9.4 Document Scanner Unit, ADF Unit (Models with ADF), and Document Cover ASSY
(Models without ADF) ......................................................................................... 3-40
9.5 CIS Unit and CIS Flat Cable ............................................................................... 3-44
iii Confidential