Confidential
4.7.2 Document double feeding ...........................................................................2-76
4.7.3 Document jam.............................................................................................2-77
4.7.4 Wrinkles on documents...............................................................................2-79
4.7.5 Document size not correctly detected.........................................................2-79
4.8 Scanned-image Problems...................................................................................2-80
4.8.1 Defective images.........................................................................................2-80
4.8.2 Troubleshooting from image defect.............................................................2-80
4.9 Fax Problems ......................................................................................................2-85
4.9.1 No faxes can be sent ..................................................................................2-85
4.9.2 No faxes can be received............................................................................2-85
4.9.3 A communications error occurs...................................................................2-85
4.10 Other Problems ...................................................................................................2-86
4.10.1 The machine cannot be powered ON .........................................................2-86
4.10.2 USB flash memory does not function..........................................................2-86
4.10.3 Data of USB flash memory does not read...................................................2-86
4.10.4 Internal memory errors................................................................................2-87
4.10.5 Security Function Lock related problems....................................................2-87
4.10.6 Ink cartridge related problems.....................................................................2-87
4.10.7 Noise comes from machine.........................................................................2-88
4.10.8 “Unusable Device” is displayed...................................................................2-88
CHAPTER 3 DISASSEMBLY AND ASSEMBLY ...............................................................3-1
1 PRECAUTIONS BEFORE PROCEEDING ....................................................................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...............................................................................................3-12
7 ROUTING OF HARNESSES AND INK SUPPLY TUBES ...........................................3-13
8 DISASSEMBLY FLOW ................................................................................................3-25
9 DISASSEMBLY PROCEDURE....................................................................................3-27
9.1 Preparation..........................................................................................................3-27
9.2 MP Side Cover L .................................................................................................3-32
9.3 MP Side Cover R.................................................................................................3-33
9.4 MP Tray ASSY/MP Paper Detection Sensor PCB ..............................................3-34
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