1-4-4 Electric problems ..................................................................................................................................1-4-39

1-4-5 Mechanical problems ............................................................................................................................1-4-43

1-4-6 Send error code ....................................................................................................................................1-4-45

(1) Scan to SMB error codes ................................................................................................................1-4-45

(2) Scan to FTP error codes .................................................................................................................1-4-46

(3) Scan to E-mail error codes..............................................................................................................1-4-47

(4) Network Twain error codes .............................................................................................................1-4-48

(5) Software trouble error codes ...........................................................................................................1-4-48

1-5 Assembly and Disassembly

1-5-1 Precautions for assembly and disassembly............................................................................................1-5-1

(1) Precautions .......................................................................................................................................1-5-1

(2) Drum..................................................................................................................................................1-5-1

(3) Toner .................................................................................................................................................1-5-1

1-5-2 Paper feed section ..................................................................................................................................1-5-2

(1) Detaching and refitting the forwarding, paper feed and separation pulleys ......................................1-5-2

(2) Detaching and refitting the MP separation, MP paper feed and MP forwarding pulleys ...................1-5-5

1-5-3 Optical section ......................................................................................................................................1-5-14

(1) Detaching and refitting the exposure lamp......................................................................................1-5-14

(2) Detaching and refitting the scanner unit..........................................................................................1-5-18

(3) Detaching and refitting the scanner wires .......................................................................................1-5-22

(3-1) Detaching the scanner wires ...................................................................................................1-5-22

(3-2) Fitting the scanner wires .........................................................................................................1-5-24

(4) Detaching and refitting the ISU (reference).....................................................................................1-5-27

(5) Detaching and refitting the laser scanner unit .................................................................................1-5-29

(6) Adjusting the position of the ISU (reference)...................................................................................1-5-33

1-5-4 Drum section.........................................................................................................................................1-5-34

(1) Detaching and refitting the drum unit ..............................................................................................1-5-34

(2) Detaching and refitting the main charger unit..................................................................................1-5-36

(3) Detaching and refitting the drum separation claws .........................................................................1-5-37

1-5-5 Developing section................................................................................................................................1-5-38

(1) Detaching and refitting the developing unit .....................................................................................1-5-38

1-5-6 Transfer section ....................................................................................................................................1-5-39

(1) Detaching and refitting the transfer roller unit .................................................................................1-5-39

1-5-7 Fuser section ........................................................................................................................................1-5-40

(1) Detaching and refitting the fuser unit...............................................................................................1-5-40

(2) Detaching and refitting the heat roller separation claws..................................................................1-5-42

(3) Detaching and refitting the press roller............................................................................................1-5-43

(4) Detaching and refitting the fuser heater ..........................................................................................1-5-45

(5) Detaching and refitting the heat roller .............................................................................................1-5-47

(6) Detaching and refitting the fuser thermistor 1 .................................................................................1-5-48

(7) Detaching and refitting the fuser thermistor 2 .................................................................................1-5-49

(8) Detaching and refitting the fuser thermostats 1 and 2.....................................................................1-5-50

(9) Adjusting front position of the fuser unit (adjusting lateral squareness) ..........................................1-5-52

1-5-8 PWBs ....................................................................................................................................................1-5-53

(1) Detaching and refitting the engine PWB .........................................................................................1-5-53

1-5-9 Others ...................................................................................................................................................1-5-55

(1) Detaching and refitting the ozone filter 1.........................................................................................1-5-55

(2) Detaching and refitting the ozone filter 2.........................................................................................1-5-56

(3) Detaching and refitting the hard disk...............................................................................................1-5-57

1-6 Requirements on PWB Replacement

1-6-1 Upgrading the firmware...........................................................................................................................1-6-1

1-6-2 Adjustment-free variable resistors (VR) ..................................................................................................1-6-2

1-6-3 Remarks on engine PWB replacement...................................................................................................1-6-2

2-1 Mechanical construction

2-1-1 Paper feed section ..................................................................................................................................2-1-1

(1) Cassette paper feed section..............................................................................................................2-1-1

(2) MP tray paper feed section ...............................................................................................................2-1-3

2-1-2 Main charging section .............................................................................................................................2-1-4

Table of Contents