Canon iR1200 Series Service Manual page 211

Contents
9.1 Fans .................................................................................................................................................................... 9-1
9.1.1 Outline ......................................................................................................................................................... 9-1
9.2 Power Supply System......................................................................................................................................... 9-2
9.2.1 Power Supply .............................................................................................................................................. 9-2
9.2.1.1 Route of Low Voltage Power Supply .................................................................................................. 9-2
9.2.1.2 Hegh-Voltage Power Supply Circuit.................................................................................................... 9-3
9.2.2 Protection Function ..................................................................................................................................... 9-4
9.2.2.1 Protective Functions ............................................................................................................................. 9-4
9.2.3 Backup Battery ............................................................................................................................................ 9-4
9.2.3.1 Outline .................................................................................................................................................. 9-4
9.2.3.2 Lithium Battery (BAT1)....................................................................................................................... 9-4
9.2.3.3 Vanadium Lithium Secondary Battery (BAT2) ................................................................................... 9-5
9.2.3.4 Types of Data ....................................................................................................................................... 9-6
9.2.3.5 Printing the Backup Data List .............................................................................................................. 9-7
9.2.4 Energy-Saving Function.............................................................................................................................. 9-8
9.2.4.1 Outline .................................................................................................................................................. 9-8
9.2.4.2 Operation .............................................................................................................................................. 9-9
9.3 Parts Replacement Procedure........................................................................................................................... 9-10
9.3.1 Control Panel ............................................................................................................................................. 9-10
9.3.1.1 Removing the Control Panel .............................................................................................................. 9-10
9.3.2 Analog Processor PCB .............................................................................................................................. 9-10
9.3.2.1 Removing the Copyboard Glass......................................................................................................... 9-10
9.3.2.2 Removing the Analog Processor PCB................................................................................................ 9-11
9.3.3 Removing the DC Controller PCB ............................................................................................................ 9-12
9.3.3.1 Removing the Rear Cover .................................................................................................................. 9-12
9.3.3.2 Removing the Right Cover................................................................................................................. 9-12
9.3.3.3 Removing the Toner Supply Cover.................................................................................................... 9-12
9.3.3.4 Removing the Control Panel .............................................................................................................. 9-13
9.3.3.5 Removing the Front Cover ................................................................................................................. 9-13
9.3.3.6 Removing the Delivery Cover............................................................................................................ 9-13
9.3.3.7 Removing the DC Controller PCB ..................................................................................................... 9-14
9.3.4 Image Processor PCB ................................................................................................................................ 9-16
9.3.4.1 Removing the Rear Cover .................................................................................................................. 9-16
9.3.4.2 Removing the Printer Controller PCB................................................................................................ 9-16
9.3.4.3 Removing the Image Processor PCB ................................................................................................. 9-16
9.3.5 Printer Controller PCB .............................................................................................................................. 9-17
9.3.5.1 Removing the Rear Cover .................................................................................................................. 9-17
9.3.5.2 Removing the Printer Controller PCB................................................................................................ 9-17
9.3.6 NCU PCB ............................................................................................................................................... 9-17
9.3.6.1 Removing the Rear Cover .................................................................................................................. 9-17
9.3.6.2 Removing the NCU PCB (if equipped with fax functions)................................................................ 9-17
9.3.7 Modular Jack PCB..................................................................................................................................... 9-18
9.3.7.1 Removing the Rear Cover .................................................................................................................. 9-18
9.3.7.2 Removing the Modular Jack PCB ...................................................................................................... 9-18
Contents