SERVICE MANUAL - O. Rensch OHG

2DC
(8) The eraser lamp does not turn on. ............................................................................................... 1-5-21
(9) The exposure lamp does not turn on. ........................................................................................... 1-5-21
(10) The exposure lamp does not turn off. ........................................................................................... 1-5-21
(11) The heater lamp does not turn on. ............................................................................................... 1-5-21
(12) The heater lamp does not turn off. ............................................................................................... 1-5-21
(13) Main charging is not performed. ................................................................................................... 1-5-22
(14) Transfer charging is not performed. ............................................................................................. 1-5-22
(15) A paper jam in the paper feed or exit section is indicated
when the main switch is turned on. .............................................................................................. 1-5-22
(16) The message requesting covers to be closed is displayed
when the front cover is closed. ..................................................................................................... 1-5-22
(17) Others. .......................................................................................................................................... 1-5-22
1-5-5 Mechanical problems ......................................................................................................................... 1-5-23
(1) No primary paper feed. ................................................................................................................. 1-5-23
(2) No secondary paper feed. ............................................................................................................ 1-5-23
(3) Skewed paper feed. ...................................................................................................................... 1-5-23
(4) The scanner does not travel. ........................................................................................................ 1-5-23
(5) Multiple sheets of paper are fed at one time. ................................................................................. 1-5-23
(6) Paper jams. .................................................................................................................................. 1-5-23
(7) Abnormal noise is heard. .............................................................................................................. 1-5-23
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 principal circuit boards .................................................................................................. 1-6-9
(1) Removing the engine board ........................................................................................................... 1-6-9
(2) Removing the main board ............................................................................................................ 1-6-10
(3) Removing the power supply board and high voltage board ......................................................... 1-6-12
(4) Removing the bias board .............................................................................................................. 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
1-6-13 Removing the exposure lamp ............................................................................................................ 1-6-34
1-6-14 Removing the scanner mirror A ......................................................................................................... 1-6-36
1-6-15 Removing the scanner motor ............................................................................................................. 1-6-37
1-6-16 Removing the main charger unit ........................................................................................................ 1-6-40
1-1-2
1-6-17 Adjustment the maintenance mode .................................................................................................... 1-6-41
(1) Adjusting the leading edge registration of image printing ............................................................. 1-6-41
(2) Adjusting the center line of image printing .................................................................................... 1-6-42
(3) Adjusting the margins for printing ................................................................................................. 1-6-43
(4) Adjusting the amount of slack in the paper ................................................................................... 1-6-44
(5) Adjusting magnification of the scanner in the main scanning direction ........................................ 1-6-45