Start-Up Sequence; Overview - Canon imageRUNNER 7095 Service Manual

4.3 Start-Up Sequence

4.3.1 Overview

The system software that controls the machine is stored on its HDD.
When the main power is turned on, the CPU on the main controller PCB loads the system software from
the HDD to the work memory (DDR-SDRAM) of the main controller PCB according to the instructions
of the boot program stored in the boot ROM.
While the CPU is initializing the memory or loading the system software, the following graphic will ap-
pear on the control panel screen, with a bar indicating the progress of processing under way:
Do not turn off the main power while the progress bar is on the screen, indicating that the HDD is being
accessed; otherwise, the HDD can suffer damage (E602).

4.3.2 Start-Up Sequence

Progress bar
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Progress bar
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