Start-Up Sequence - Canon iR8500 Service Manual

1.3.2 Start-Up Sequence

When the main power switch is turned on, the CPU on the main controller PCB executes
the self-diagnosis program stored in the boot ROM.
The program is used to check the condition of the SDARM and the hard disk; if an error
is found, the fact will be indicated on the control panel in the form of an error code.
E601-0000, 0001
Indicates an error in the image transfer data.
E602-0001, 0002
Indicates a write/read error.
COPYRIGHT© 2001 CANON INC.
SD RAM
System Image data
area
CPU
Self-
Boot
diagnosis
program
program
Boot ROM
Main controller PCB
Access to the program during executing
F03-103-02
2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001
CHAPTER 3 MAIN CONTROLLER
area
HDD
3-5