Service manual

Contents
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 Low Voltage Power Supply Circuit ..................................................................................................... 9-2
9.2.1.2 High-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.............................................................................................................................................. 9-8
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 Left Cover................................................................................................................... 9-12
9.3.3.2 Removing the Rear Cover .................................................................................................................. 9-12
9.3.3.3 Removing the Delivery Cover............................................................................................................ 9-12
9.3.3.4 Removing the DC Controller PCB..................................................................................................... 9-12
9.3.4 Image Processor PCB................................................................................................................................ 9-14
9.3.4.1 Removing the Left Cover................................................................................................................... 9-14
9.3.4.2 Removing the Rear Cover .................................................................................................................. 9-14
9.3.4.3 Removing the Printer Controller PCB (if equipped with printer functions) ...................................... 9-14
9.3.4.4 Removing the Image Processor PCB ................................................................................................. 9-14
9.3.5 Printer Controller PCB .............................................................................................................................. 9-15
9.3.5.1 Removing the Left Cover................................................................................................................... 9-15
9.3.5.2 Removing the Rear Cover .................................................................................................................. 9-15
9.3.5.3 Removing the Printer Controller PCB (if equipped with printer functions) ...................................... 9-15
9.3.6 NCU PCB............................................................................................................................................... 9-15
9.3.6.1 Removing the Left Cover................................................................................................................... 9-15
9.3.6.2 Removing the Rear Cover .................................................................................................................. 9-16
9.3.6.3 Removing the NCU PCB (if equipped with fax functions)................................................................ 9-16
9.3.7 Modular Jack PCB..................................................................................................................................... 9-16
9.3.7.1 Removing the Left Cover................................................................................................................... 9-16
9.3.7.2 Removing the Rear Cover .................................................................................................................. 9-16