Canon imagePRESS C1 Service Manual - page 256
Chapter 4
4-8
F-4-7
1. Boot Program (Section 1)
The boot program is executed by the CPU on the Main Controller Circuit Board when the Main Power Switch is turned ON.
A check is made of image memory (DDR-SDRAM) and HDD status.
An error code is displayed if any abnormality is detected. If everything is normal, the control program is loaded from the HDD into memory.
2. Control Program 1 (Section 2)
1) Each device (each hardware device on the Controller Circuit Board) is checked and initialized.
2) System files are restored as necessary if the previous shutdown was not carried out normally. Bootup requires more time than usual in this case.
3) Each program module is initialized.
3. Control Program 2 (Section 3)
1) The initialization of each software module and configuration of the printer and scanner are completed.
2) The startup sequences ends if the printer and scanner are detected normally. If they are not detected normally, a connection timeout occurs and E732/E733 is
displayed.
Jobs can be accepted once the startup sequence ends normally.
(An operation screen is displayed on the Operation Panel and the color of the Start Key LED indicator changes from red to green.)
F-4-8
Progress bar
1
3
2
Image Memory (DDR-SDRAM)
CPU
HDD
System
Area
Image Data
Area
BootROM
Main Controller Circuit Board (MAIN)
Self-
diagnostics
Program
Boot
Program
: The arrows represent access to the program during execution.
: System Program Flow
System
Software
System
Software
- During Boot Program Execution