Canon iR5055 Series Service Manual page 323

Contents
10.1 Control Panel..............................................................................................................................................................10-1
10.1.1 Overview.................................................................................................................................................................................. 10-1
10.1.2 LCD Indication Processing ...................................................................................................................................................... 10-1
10.1.3 Adjusting the LCD Contrast .................................................................................................................................................... 10-1
10.1.4 Functions of the Control Panel CPU........................................................................................................................................ 10-1
10.2 Counters .....................................................................................................................................................................10-1
10.2.1 Soft Counters ........................................................................................................................................................................... 10-1
10.3 Fans ............................................................................................................................................................................10-3
10.3.1 Arrangement, Functions, and Error Codes .............................................................................................................................. 10-3
10.3.2 Controlling the Speed of the Fans............................................................................................................................................ 10-4
10.3.3 Sequence of Operation ............................................................................................................................................................. 10-4
10.4 Power Supply System ................................................................................................................................................10-5
10.4.1 Power Supply ........................................................................................................................................................................... 10-5
10.4.1.1 Overview .....................................................................................................................................................................................................10-5
10.4.1.2 Distribution of Power and the Switches......................................................................................................................................................10-5
10.4.2 Rated Output of the DC Power Supply PCB ........................................................................................................................... 10-7
10.4.2.1 Rated Output of the DC Power Supply PCB ..............................................................................................................................................10-7
10.4.2.2 Rated Output of the Accessories Power Supply PCB.................................................................................................................................10-7
10.4.3 Protection Function .................................................................................................................................................................. 10-8
10.4.3.1 Protective Functions....................................................................................................................................................................................10-8
10.4.4 Backup Battery......................................................................................................................................................................... 10-8
10.4.4.1 Backup Battery............................................................................................................................................................................................10-8
10.4.5 Energy-Saving Function .......................................................................................................................................................... 10-8
10.4.5.1 Overview .....................................................................................................................................................................................................10-8
10.4.5.2 SNMP setup ................................................................................................................................................................................................10-9
10.5 Parts Replacement Procedure...................................................................................................................................10-12
10.5.1 External Covers...................................................................................................................................................................... 10-12
10.5.1.1 Right Cover (Lower Rear) ........................................................................................................................................................................10-12
10.5.1.1.1 Removing the Right Cover (Lower Rear) .........................................................................................................................................10-12
10.5.1.2 Right Cover (Upper Rear) .........................................................................................................................................................................10-12
10.5.1.2.1 Removing the Right Cover (Upper Rear) .........................................................................................................................................10-12
10.5.1.3 Right Cover (Upper) .................................................................................................................................................................................10-12
10.5.1.3.1 Removing the Right Cover (Upper) ..................................................................................................................................................10-12
10.5.1.4 Left Cover (Upper)....................................................................................................................................................................................10-12
10.5.1.4.1 Removing the Left Cover (Upper) ....................................................................................................................................................10-12
10.5.1.5 Front Cover ...............................................................................................................................................................................................10-13
10.5.1.5.1 Removing the Front Cover................................................................................................................................................................10-13
10.5.1.6 Rear Cover (Upper)...................................................................................................................................................................................10-13
10.5.1.6.1 Removing the Rear Cover (Upper) ...................................................................................................................................................10-13
10.5.1.7 Rear Cover (Lower) ..................................................................................................................................................................................10-13
10.5.1.7.1 Before Removing the Rear Cover (Lower) .......................................................................................................................................10-13
10.5.1.7.2 Removing the Rear Cover (Lower)...................................................................................................................................................10-13
10.5.1.8 Left Cover (Lower) ...................................................................................................................................................................................10-13
10.5.1.8.1 Before Removing the Left Cover (Lower)........................................................................................................................................10-13
10.5.1.8.2 Removing the Left Cover (Lower)....................................................................................................................................................10-13
10.5.1.9 Left Cover (Middle) ..................................................................................................................................................................................10-14
10.5.1.9.1 Removing the Left Cover (Middle)...................................................................................................................................................10-14
10.5.1.10 Toner Supply Cover ................................................................................................................................................................................10-14
10.5.1.10.1 Removing the Toner Supply Cover.................................................................................................................................................10-14
10.5.1.11 Fixing/Feeding Unit Cover .....................................................................................................................................................................10-14
10.5.1.11.1 Removing the Duplexing Feed Front Cover ...................................................................................................................................10-14
10.5.1.11.2 Removing the Fixing/Feeding Unit Front Cover ............................................................................................................................10-15
10.5.1.11.3 Removing the Fixing/Feeding Unit Middle Cover .........................................................................................................................10-15
Contents