Canon Color imageCLASS MF9170c Service Manual page 201

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Contents
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
10.5.4.1 Before Removing the Right Cover............................................................................................................................................................10-11
10.5.4.2 Removing the Right Cover .......................................................................................................................................................................10-11
10.5.5 Left Cover .............................................................................................................................................................................. 10-13
10.5.5.1 Before Removing the Left Cover..............................................................................................................................................................10-13
10.5.5.2 Removing the Left Cover..........................................................................................................................................................................10-13
10.5.6 Delivery Tray Cover............................................................................................................................................................... 10-14
10.5.6.1 Before Removing the Delivery Tray Cover..............................................................................................................................................10-14
10.5.6.2 Removing the Delivery Tray Cover..........................................................................................................................................................10-14
10.5.7 Power Station Cover............................................................................................................................................................... 10-15
10.5.7.1 Before Removing the Electrical Components Cover................................................................................................................................10-15
10.5.7.2 Removing the Electrical Components Cover............................................................................................................................................10-15
10.5.8 Controller Box........................................................................................................................................................................ 10-15
10.5.8.1 Before Removing the Controller Box .......................................................................................................................................................10-15
10.5.8.2 Removing the Controller Box ...................................................................................................................................................................10-15
10.5.9 Laser Scanner Cover .............................................................................................................................................................. 10-16
10.5.9.1 Before Removing the Laser Scanner Cover..............................................................................................................................................10-16
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