2GZ/2G1-2
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 ...................1-5-4
(3) Detaching and refitting the left and right registration cleaner ............................................................1-5-9
1-5-3 Laser scanner unit ................................................................................................................................1-5-11
(1) Detaching and refitting the laser scanner unit .................................................................................1-5-11
(2) Adjusting the skew of the laser scanner unit (reference) ................................................................1-5-13
1-5-4 Drum section.........................................................................................................................................1-5-14
(1) Detaching and refitting the drum unit ..............................................................................................1-5-14
(2) Detaching and refitting the main charger unit..................................................................................1-5-15
(3) Detaching and refitting the drum separation claws .........................................................................1-5-16
1-5-5 Developing section................................................................................................................................1-5-17
(1) Detaching and refitting the developing unit .....................................................................................1-5-17
1-5-6 Transfer section ....................................................................................................................................1-5-18
(1) Detaching and refitting the transfer roller unit .................................................................................1-5-18
1-5-7 Fuser section ........................................................................................................................................1-5-19
(1) Detaching and refitting the fuser unit...............................................................................................1-5-19
(2) Detaching and refitting the heat roller separation claws..................................................................1-5-20
(3) Detaching and refitting the press roller............................................................................................1-5-21
(4) Detaching and refitting the fuser heater ..........................................................................................1-5-22
(5) Detaching and refitting the heat roller .............................................................................................1-5-23
(6) Detaching and refitting the fuser unit thermistor 1 and 2.................................................................1-5-24
1-5-8 Others ...................................................................................................................................................1-5-25
(1) Detaching and refitting the ozone filter 1 and 2...............................................................................1-5-25
(2) Detaching and refitting the dust filter 1 and 2..................................................................................1-5-26
1-6 Firmware
1-6-1 Downloading firmware ............................................................................................................................1-6-1
(1) Downloading the firmware from the parallel interface .......................................................................1-6-2
(2) Downloading the firmware from the memory card.............................................................................1-6-3
(3) Downloading the firmware from the USB memory ............................................................................1-6-5
2-1 Mechanical construction
2-1-1 Paper feed section..................................................................................................................................2-1-1
2-1-2 Main charging section .............................................................................................................................2-1-4
2-1-3 Optical section ........................................................................................................................................2-1-5
(1) Laser scanner unit.............................................................................................................................2-1-5
2-1-4 Developing section..................................................................................................................................2-1-8
(1) Single component developing system.............................................................................................2-1-10
2-1-5 Transfer and separation sections..........................................................................................................2-1-11
2-1-6 Cleaning and charge erasing sections..................................................................................................2-1-12
2-1-7 Fuser section ........................................................................................................................................2-1-13
2-1-8 Eject and switchback sections ..............................................................................................................2-1-14
2-1-9 Duplex section ......................................................................................................................................2-1-15
(1) Paper conveying operation in duplex copying.................................................................................2-1-16
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout..............................................................................................................................2-2-1
(1) PWBs ................................................................................................................................................2-2-1
(2) Switches and sensors .......................................................................................................................2-2-2
(3) Motors ...............................................................................................................................................2-2-4
(4) Other electrical components..............................................................................................................2-2-5
2-3 Operation of the PWBs
2-3-1 Power source PWB.................................................................................................................................2-3-1
2-3-2 Engine PWB............................................................................................................................................2-3-4
2-4 Appendixes
Maintenance parts list .............................................................................................................................2-4-1
General wiring diagram...........................................................................................................................2-4-2
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