Canon L120 Series, Service Manual

Page: 10 / 158

Contents
3.2.4.4 Removing the Rear Cover ..................................................................................................................................................... 3- 26
3.2.4.5 Removing the Cartridge Cover .............................................................................................................................................. 3- 26
3.2.4.6 Removing the Operation Panel Unit ...................................................................................................................................... 3- 26
3.2.4.7 Removing the Upper Cover ................................................................................................................................................... 3- 26
3.2.4.8
Removing the Reader Unit..................................................................................................................................................... 3- 27
3.2.4.9 Removing the Upper Reader Unit Frame .............................................................................................................................. 3- 27
3.2.4.10 Removing the Document Feed Roller .................................................................................................................................. 3- 27
3.2.5 Reader Unit............................................................................................................................................................3- 28
3.2.5.1 Removing the Right Cover..................................................................................................................................................... 3- 28
3.2.5.2 Removing the Left Cover ....................................................................................................................................................... 3- 28
3.2.5.3 Removing the Front Cover..................................................................................................................................................... 3- 28
3.2.5.4
Removing the Rear Cover ..................................................................................................................................................... 3- 29
3.2.5.5 Removing the Cartridge Cover .............................................................................................................................................. 3- 29
3.2.5.6 Removing the Operation Panel Unit ...................................................................................................................................... 3- 29
3.2.5.7 Removing the Upper Cover ................................................................................................................................................... 3- 29
3.2.5.8 Removing the Reader Unit..................................................................................................................................................... 3- 30
3.2.6 Document Feed Motor ...........................................................................................................................................3- 30
3.2.6.1 Removing the Right Cover..................................................................................................................................................... 3- 30
3.2.6.2 Removing the Left Cover ....................................................................................................................................................... 3- 30
3.2.6.3 Removing the Front Cover..................................................................................................................................................... 3- 30
3.2.6.4
Removing the Rear Cover ..................................................................................................................................................... 3- 31
3.2.6.5 Removing the Cartridge Cover .............................................................................................................................................. 3- 31
3.2.6.6 Removing the Operation Panel Unit ...................................................................................................................................... 3- 31
3.2.6.7 Removing the Upper Cover ................................................................................................................................................... 3- 32
3.2.6.8 Removing the Reader Unit..................................................................................................................................................... 3- 32
3.2.6.9
Removing the Document Feed Motor .................................................................................................................................... 3- 32
3.2.7 DS/DES Sensor .....................................................................................................................................................3- 32
3.2.7.1 Removing the Right Cover..................................................................................................................................................... 3- 32
3.2.7.2 Removing the Left Cover ....................................................................................................................................................... 3- 32
3.2.7.3 Removing the Front Cover..................................................................................................................................................... 3- 33
3.2.7.4 Removing the Rear Cover ..................................................................................................................................................... 3- 33
3.2.7.5 Removing the Cartridge Cover .............................................................................................................................................. 3- 33
3.2.7.6
Removing the Operation Panel Unit ...................................................................................................................................... 3- 34
3.2.7.7 Removing the Upper Cover ................................................................................................................................................... 3- 34
3.2.7.8 Removing the Reader Unit..................................................................................................................................................... 3- 34
3.2.7.9 Removing the Upper Reader Unit Frame .............................................................................................................................. 3- 34
3.2.7.10 Removing the DS/DES Sensor ........................................................................................................................................... 3- 34
3.3 LASER EXPOSURE SYSTEM ................................................................................................................. 3- 36
3.3.1 Laser/Scanner Unit ................................................................................................................................................3- 36
3.3.1.1
Removing the Right Cover..................................................................................................................................................... 3- 36
3.3.1.2 Removing the Left Cover ....................................................................................................................................................... 3- 36
3.3.1.3 Removing the Front Cover..................................................................................................................................................... 3- 36
3.3.1.4 Removing the Rear Cover ..................................................................................................................................................... 3- 36
3.3.1.5 Removing the Cartridge Cover .............................................................................................................................................. 3- 36
3.3.1.6
Removing the Operation Panel Unit ...................................................................................................................................... 3- 37
3.3.1.7 Removing the Upper Cover ................................................................................................................................................... 3- 37
3.3.1.8 Removing the Reader Unit..................................................................................................................................................... 3- 37
3.3.1.9
Removing the DCNT board.................................................................................................................................................... 3- 37
3.3.1.10 Removing the Laser/Scanner Unit ....................................................................................................................................... 3- 38
3.4 IMAGE FORMATION SYSTEM................................................................................................................ 3- 39
3.4.1 Transfer Charging Roller........................................................................................................................................3- 39
3.4.1.1 Removing the Transfer Charging Roller ................................................................................................................................ 3- 39
3.5 PICKUP AND FEEDING SYSTEM........................................................................................................... 3- 40
3.5.1 Pickup Unit.............................................................................................................................................................3- 40
3.5.1.1 Removing the Transfer Charging Roller ................................................................................................................................ 3- 40
3.5.1.2 Removing the Right Cover..................................................................................................................................................... 3- 40
3.5.1.3
Removing the Left Cover ....................................................................................................................................................... 3- 40
3.5.1.4 Removing the Front Cover..................................................................................................................................................... 3- 40
3.5.1.5 Removing the Rear Cover ..................................................................................................................................................... 3- 41
3.5.1.6 Removing the Cartridge Cover .............................................................................................................................................. 3- 41