Canon iPF8000 - imagePROGRAF Color Inkjet Printer, Service Manual

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Chapter 2
2-2
F-2-2
2.2.2 Operation Sequence at Power-off
0012-6311
Turning off the power switch cuts off the drive voltage supply, launching a firmware power-off sequence as shown below.
If the power cord is disconnected from the wall outlet or the upper cover or any other cover is opend, the printer cancels the ongoing operation and shuts down
immediately. Since printhead capping may or may not have been carried out properly, reconnect the power cord to the wall out and turn on the power switch. Making
sure that the printer has entered online mode, turn off the power switch.
1. Power-off sequence
Power Button ON
Device/resource
initializarion
Printhead/
ink tank check
Media feed system
initialization
Recovery system
initialization
Carriage position
initialization
Remaining ink level detection/
Waste ink level detection
Power-on
automatic recovery operation
Capping
Waiting for print operation
Initialization of software
Initialization of various devices
Engine status check
Engine startup status check
Previous power-off status check,etc.
Printhead installation status check
Ink tank installation status check
EEPROM check
Cassette pick-up unit initialization
Roll feed unit initialization
Roll feed unit initialization
Sensor check
Recovery system return to origin
Sensor check
Carriage motor return to origin