Canon iR3570 Series, Service Manual

Page: 170 / 722

Chapter 4
4-12
F-4-14
4.4 Shut-Down Sequence
4.4.1 Overview
0006-8356
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N /
If the main power switch is turned off while the machine is accessing its HDD, damage can well occur on the HDD. To avoid such damage, the machine is provided
with a shut-down sequence.
4.4.2 Overview (w/ HDD)
0008-8064
iR2230 / / iR3530 /
If the main power switch is turned off while the machine is accessing its HDD, damage can well occur on the HDD. To avoid such damage, the machine is provided
with a shut-down sequence.
4.4.3 Flow of Operation
0006-8379
iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N /
The following diagram shows the flow of shut-down operation:
F-4-15
4.4.4 Flow of Operation (w/ HDD)
0008-8065
iR2230 / / iR3530 /
The following diagram shows the flow of shut-down operation:
Image memory (SDRAM)
CPU
HDD
System area Image data
area
BootROM
Main controller PCB
Self-diagnosis
program
Boot
program
: access to the program during execution.
: flow of the system program.
- While the Boot Program Is Being Run
System
software
Press on the control panel
power switch (3 sec or more)
HDD
protection check mode
HDD
protection execution mode
Main power switch off
Indicates the job being executed, and informs the
user that it will start the shut-down sequence.
Moves to the shut-down sequence.
Cancels any job on wait in print mode.
Cancels any job on wait in print mode.
Cancels any job being executed in fax mode.