Start-Up Sequence - Canon iR105 Service Manual

1.3.2 Start-Up Sequence

When the main power switch is turned on, the CPU on the main controller PCB first ex-
ecutes the self-diagnosis program stored in the boot ROM.
The self-diagnosis program checks the condition of the SDRAM and the HDD; if a fault
is found, it will indicate an error code in the control panel.
E601-0000, -0001
Indicates an error in 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 at time of execution
F03-103-02
2000 2000 2000 2000 CANON iR105 REV.0 JULY 2001
CHAPTER 3 MAIN CONTROLLER
area
HDD
3-5