Canon Color imageCLASS MF9170c Service Manual page 11

9.3.1 Overview ....................................................................................................................................................9- 5
9.3.2 Failure Detection ......................................................................................................................................9- 5
9.4 Parts Replacement Procedure ......................................................................................................................9- 6
9.4.1 Fixing Unit ..................................................................................................................................................9- 6
9.4.1.1 Removing the Fixing Assembly.......................................................................................................9- 6
9.4.2 Fixing Sleeve Unit .....................................................................................................................................9- 6
9.4.2.1 Before Removing the Fixing Sleeve Unit.......................................................................................9- 6
9.4.2.2 Removing the Fixing Sleeve Unit....................................................................................................9- 6
9.4.3 Fixing Drive Unit ........................................................................................................................................9- 9
9.4.3.1 Before Removing the Fixing Drive Unit..........................................................................................9- 9
9.4.3.2 Removing the Fixing Drive Unit.......................................................................................................9- 9
9.4.4 Fixing Motor .............................................................................................................................................9- 12
9.4.4.1 Before Removing the Fixing Motor ...............................................................................................9- 12
9.4.4.2 Removing the Fixing Motor ............................................................................................................9- 12
Chapter 10 External and Controls
10.1 DC Controller ...............................................................................................................................................10- 1
10.1.1 Overview ................................................................................................................................................10- 1
10.1.2 Operation of Each Block......................................................................................................................10- 2
10.1.3 Fan/Motor Control ................................................................................................................................10- 2
10.1.4 Drum motor failure detection ..............................................................................................................10- 3
10.1.5 ETB motor failure detection ................................................................................................................10- 3
10.1.6 Fixing motor failure detection .............................................................................................................10- 3
10.1.7 Main Unit Fan Failure Detection ........................................................................................................10- 3
10.1.8 Duplex Fan Failure Detection.............................................................................................................10- 3
10.2 Control Panel ...............................................................................................................................................10- 4
10.2.1 Overview ................................................................................................................................................10- 4
10.3 Counter .........................................................................................................................................................10- 5
10.3.1 Overview ................................................................................................................................................10- 5
10.3.2 Timing of Increasing the Count ..........................................................................................................10- 5
10.4 Power Supply ...............................................................................................................................................10- 6
10.4.1 Power Supply.........................................................................................................................................10- 6
10.4.1.1 Low-voltage Power Unit ...............................................................................................................10- 6
10.4.2 Protection Function...............................................................................................................................10- 7
10.4.2.1 Protective Function .......................................................................................................................10- 7
10.4.2.2 Safety ..............................................................................................................................................10- 7
10.4.3 Energy-Saving Function.......................................................................................................................10- 7
10.4.3.1 Overview .........................................................................................................................................10- 7
10.5 Parts Replacement Procedure ..................................................................................................................10- 9
10.5.1 Front Cover ............................................................................................................................................10- 9
10.5.1.1 Before Removing the Front Cover Unit......................................................................................10- 9
10.5.1.2 Removing the Front Cover Unit...................................................................................................10- 9
10.5.2 Front Upper Cover 1...........................................................................................................................10- 10
10.5.2.1 Before Removing Front upper Cover 1 ....................................................................................10- 10
10.5.2.2 Removing Front Upper Cover 1 ................................................................................................10- 10
10.5.3 Rear Cover...........................................................................................................................................10- 11
10.5.3.1 Removing the Rear Cover Unit .................................................................................................10- 11
10.5.4 Right Cover ..........................................................................................................................................10- 11
Contents