CHAPTER 3 MAIN CONTROLLER3-4 COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 20011.3 Start-Up Sequence1.3.1 OutlineThe system software used to control the machine is stored on the hard disk. The CPU onthe main controller PCB reads the system software from the hard disk to the SDRAM fittedto the DIMM socket on the main controller PCB (This is why it takes a little time before thecontrol panel becomes ready after the main power switch is turned on).While the CPU reads the system software from the hard disk to the SDRAM, the controlpanel shows the following screen, and the progress of executing the start-up sequence is in-dicated using a progressive bar.Start-Up ScreenF03-103-01Progressive barWait…
