Service manual
Contents
2.5.3.3 Fixing Unit Failure Detection.................................................................................................................................................. 2- 36
2.6 Engine Control System.............................................................................................................................2- 36
2.6.1 Construction ..........................................................................................................................................................2- 36
2.6.1.1 Overview ................................................................................................................................................................................ 2- 36
2.6.2 DC Controller (DCNT) ...........................................................................................................................................2- 37
2.6.2.1 Outline.................................................................................................................................................................................... 2- 37
2.6.2.2 Operations ............................................................................................................................................................................. 2- 37
2.6.2.3 Controlling the Motors and Fans............................................................................................................................................ 2- 38
2.6.2.4 Main Motor Control ................................................................................................................................................................ 2- 38
2.6.2.5 Developing Rotary Motor Control........................................................................................................................................... 2- 39
2.6.2.6 Cooling Fan............................................................................................................................................................................ 2- 40
2.6.3 System Controller (SCNT).....................................................................................................................................2- 41
2.6.3.1 Outline.................................................................................................................................................................................... 2- 41
2.6.3.2 Canon Advanced Printing TechnologyÅ@(CARPS).............................................................................................................. 2- 41
Chapter 3 DISASSEMBLY AND ASSEMBLY
3.1 Cartridge Removal at Trouble Eruption Cartridge Removal at Trouble Eruption........................................3- 1
3.1.1 Cartridge Removal at Trouble Eruption ...................................................................................................................3- 1
3.1.2 Toner cartridge removal ..........................................................................................................................................3- 1
3.1.3 Drum cartridge removal...........................................................................................................................................3- 2
3.2 EXTERNAL AND CONTROLS SYSTEM ...................................................................................................3- 2
3.2.1 Front Cover..............................................................................................................................................................3- 2
3.2.1.1 Removing the Cassettes.......................................................................................................................................................... 3- 2
3.2.1.2 Removing the Rear Cover ....................................................................................................................................................... 3- 2
3.2.1.3 Removing the Right Cover (with the reader assembly intact).................................................................................................. 3- 2
3.2.1.4 Removing the Left Cover (with the reader assembly intact) .................................................................................................... 3- 3
3.2.1.5 Removing the Lower Front Cover ............................................................................................................................................ 3- 4
3.2.1.6 Removing the Front Cover....................................................................................................................................................... 3- 4
3.2.2 Rear Cover ..............................................................................................................................................................3- 4
3.2.2.1 Removing the Rear Cover ....................................................................................................................................................... 3- 4
3.2.3 Top Cover................................................................................................................................................................3- 5
3.2.3.1 Removing the Cassettes.......................................................................................................................................................... 3- 5
3.2.3.2 Removing the Rear Cover ....................................................................................................................................................... 3- 5
3.2.3.3 Removing the Reader Assembly ............................................................................................................................................. 3- 5
3.2.3.4 Removing the Right Cover....................................................................................................................................................... 3- 6
3.2.3.5 Removing the Left Cover ......................................................................................................................................................... 3- 6
3.2.3.6 Removing the Power Supply Assembly ................................................................................................................................... 3- 6
3.2.3.7 Removing the Face-Down Cover............................................................................................................................................. 3- 6
3.2.3.8 Removing the Top Cover ......................................................................................................................................................... 3- 7
3.2.4 Right Cover..............................................................................................................................................................3- 8
3.2.4.1 Removing the Cassettes.......................................................................................................................................................... 3- 8
3.2.4.2 Removing the Rear Cover ....................................................................................................................................................... 3- 8
3.2.4.3 Removing the Right Cover (with the reader assembly intact).................................................................................................. 3- 8
3.2.5 Left Cover ................................................................................................................................................................3- 9
3.2.5.1 Removing the Cassettes.......................................................................................................................................................... 3- 9
3.2.5.2 Removing the Rear Cover ....................................................................................................................................................... 3- 9
3.2.5.3 Removing the Left Cover (with the reader assembly intact) .................................................................................................... 3- 9
3.2.6 Upper Right Cover.................................................................................................................................................3- 10
3.2.6.1 Removing the Rear Cover ..................................................................................................................................................... 3- 10
3.2.6.2 Removing the Reader Assembly ........................................................................................................................................... 3- 10
3.2.6.3 Removing the Scanner Unit ................................................................................................................................................... 3- 11
3.2.6.4 Removing the Upper Right Cover .......................................................................................................................................... 3- 11
3.2.7 Upper Left Cover ...................................................................................................................................................3- 11
3.2.7.1 Removing the Rear Cover ..................................................................................................................................................... 3- 11
3.2.7.2 Removing the Reader Assembly ........................................................................................................................................... 3- 12
3.2.7.3 Removing the Scanner Unit ................................................................................................................................................... 3- 13
3.2.7.4 Removing the Upper Left Cover ............................................................................................................................................ 3- 13
3.2.8 Face-up cover........................................................................................................................................................3- 13
3.2.8.1 Removing the Fixing Assembly.............................................................................................................................................. 3- 13