(15) Fixing is poor. ............................................................................................................................... 1-5-21

(16) Image center does not align with the original center. ................................................................... 1-5-21

1-5-4 Electrical problems ............................................................................................................................. 1-5-22

(1) The machine does not operate when the power switch is turned on. ........................................... 1-5-22

(2) The main motor does not operate. (C2000) ................................................................................. 1-5-22

(3) The scanner motor does not operate. .......................................................................................... 1-5-22

(4) Cooling fan does not operate. ...................................................................................................... 1-5-22

(5) The feed clutch does not operate. ................................................................................................ 1-5-22

(6) The MP feed clutch does not operate. .......................................................................................... 1-5-23

(7) The registration clutch does not operate. ..................................................................................... 1-5-23

(8) The eraser lamp does not turn on. ............................................................................................... 1-5-23

(9) The exposure lamp does not turn on. ........................................................................................... 1-5-23

(10) The exposure lamp does not turn off. ........................................................................................... 1-5-23

(11) The heater lamp does not turn on. ............................................................................................... 1-5-23

(12) The heater lamp does not turn off. ............................................................................................... 1-5-23

(13) Main charging is not performed. ................................................................................................... 1-5-24

(14) Transfer charging is not performed. ............................................................................................. 1-5-24

(15) A paper jam in the paper feed or exit section is indicated

when the power switch is turned on. ............................................................................................ 1-5-24

(16) The message requesting cover to be closed is displayed

when the front cover is closed. ..................................................................................................... 1-5-24

(17) Others. .......................................................................................................................................... 1-5-24

1-5-5 Mechanical problems ......................................................................................................................... 1-5-25

(1) No primary paper feed. ................................................................................................................. 1-5-25

(2) No secondary paper feed. ............................................................................................................ 1-5-25

(3) Skewed paper feed. ...................................................................................................................... 1-5-25

(4) The scanner does not travel. ........................................................................................................ 1-5-25

(5) Multiple sheets of paper are fed at one time. ................................................................................. 1-5-25

(6) Paper jams. .................................................................................................................................. 1-5-25

(7) Abnormal noise is heard. .............................................................................................................. 1-5-25

1-6 Assembly and Disassembly

1-6-1 Precautions for assembly and disassembly ......................................................................................... 1-6-1

(1) Precautions ..................................................................................................................................... 1-6-1

1-6-2 Removing the process unit ................................................................................................................... 1-6-2

1-6-3 Removing the principal outer covers .................................................................................................... 1-6-3

(1) Removing the front top cover/face-down output tray ...................................................................... 1-6-3

(2) Removing the right cover ................................................................................................................ 1-6-4

(3) Removing the left cover .................................................................................................................. 1-6-4

1-6-4 Removing the feed roller ...................................................................................................................... 1-6-5

1-6-5 Removing the MP feed roller ................................................................................................................ 1-6-6

1-6-6 Removing the transfer roller ................................................................................................................. 1-6-8

1-6-7 Removing the primary circuit PWBs ..................................................................................................... 1-6-9

(1) Removing the engine PWB ............................................................................................................ 1-6-9

(2) Removing the main PWB ............................................................................................................. 1-6-10

(3) Removing the power supply PWB and high voltage PWB ........................................................... 1-6-12

(4) Removing the bias PWB ............................................................................................................... 1-6-13

1-6-8 Removing the main motor and drive unit ........................................................................................... 1-6-14

1-6-9 Removing and splitting the fuser unit ................................................................................................. 1-6-18

(1) Removing the separation craws ................................................................................................... 1-6-20

(2) Removing the heater lamp ........................................................................................................... 1-6-21

(3) Removing the heat roller .............................................................................................................. 1-6-22

(4) Removing the thermistor .............................................................................................................. 1-6-24

(5) Removing the thermal cutout ........................................................................................................ 1-6-25

(6) Removing the press roller ............................................................................................................. 1-6-26

1-6-10 Removing and scanner unit ............................................................................................................... 1-6-27

1-6-11 Removing the laser scanner unit and the eraser lamp ....................................................................... 1-6-29

1-6-12 Removing the ISU unit ....................................................................................................................... 1-6-32

1-1-2

Table of Contents