Canon iR4570 Series Service Manual page 21

9.5.6.3 Removing the Fixing Film Sensor..................................................................................................... 9- 41
Chapter 10 External and Controls
10.1 Control Panel................................................................................................................................................. 10- 1
10.1.1Overview ................................................................................................................................................. 10- 1
10.1.2Overview ................................................................................................................................................. 10- 1
10.1.3LCD Indication Processing ..................................................................................................................... 10- 2
10.1.4LCD Indication Processing ..................................................................................................................... 10- 2
10.1.5Adjustment of the LCD Contact.............................................................................................................. 10- 2
10.1.6Adjustment of the LCD Contact.............................................................................................................. 10- 2
10.1.7Functions of the Control Panel CPU ....................................................................................................... 10- 3
10.1.8Functions of the Control Panel CPU ....................................................................................................... 10- 3
10.2 Counters......................................................................................................................................................... 10- 4
10.2.1Overview ................................................................................................................................................. 10- 4
10.2.2Timing of Increasing the Count............................................................................................................... 10- 5
10.3 Fans ............................................................................................................................................................... 10- 7
10.3.1Overview ................................................................................................................................................. 10- 7
10.3.22-Speed Control....................................................................................................................................... 10- 7
10.3.3Sequence of Operation ............................................................................................................................ 10- 8
10.4 Power Supply System.................................................................................................................................... 10- 9
10.4.1 Power Supply .......................................................................................................................................... 10- 9
10.4.1.1 Route of Power Inside the Printer Unit ......................................................................................... 10- 9
10.4.1.2 Route of Power Inside the Printer Unit ......................................................................................... 10- 10
10.4.1.3 Power Supply Route in the Reader Unit........................................................................................ 10- 12
10.4.1.4 Timing of Supply to the Reader Unit ............................................................................................ 10- 12
10.4.1.5 Connections to Various Accessories ............................................................................................. 10- 13
10.4.1.6 Connections to Various Accessories ............................................................................................. 10- 14
10.4.2 Rated Output of the DC Power Supply PCB ........................................................................................ 10- 15
10.4.2.1 Rated Output of the Printer Unit Power Supply PCB ................................................................... 10- 15
10.4.2.2 Rated Output of the Controller Power Supply PCB...................................................................... 10- 15
10.4.2.3 Rated Output of the Accessories Power Supply PCB ................................................................... 10- 16
10.4.2.4 Rated Output of the All-Night Power Supply PCB....................................................................... 10- 16
10.4.3 Protection Function ............................................................................................................................... 10- 16
10.4.3.1 Protective Mechanisms.................................................................................................................. 10- 16
10.4.4 Backup Battery...................................................................................................................................... 10- 17
10.4.4.1 Backup Battery .............................................................................................................................. 10- 17
10.4.5 Energy-Saving Function ....................................................................................................................... 10- 17
10.4.5.1 Overview ....................................................................................................................................... 10- 17
10.4.5.2 Machine as Supplied with Power .................................................................................................. 10- 18
10.5 Parts Replacement Procedure ...................................................................................................................... 10- 20
10.5.1 Main Drive Assembly ........................................................................................................................... 10- 20
10.5.1.1 Removing the Rear Cover ............................................................................................................. 10- 20
10.5.1.2 Removing the Main Drive Assembly ............................................................................................ 10- 20
10.5.1.3 Removing the Main Drive Assembly ............................................................................................ 10- 21
10.5.2 Power Supply Unit ................................................................................................................................ 10- 21
10.5.2.1 Removing the Rear Cover ............................................................................................................. 10- 21
10.5.2.2 Removing the Left Cover (lower) ................................................................................................. 10- 22
10.5.2.3 Removing the Accessories Power Supply PCB ............................................................................ 10- 22
Contents