Power-On Sequence - Canon MF8100 Series Service Manual

PRINT
(Print)
LSTR
(Last
rotation)

1.5.2 Power-on Sequence

The power-on sequence is the first operation executed by loads based on the firmware previously stored in the printer. It is indicated in the flowchart below.
The power-on sequence is executed from when the power is turned on until the printer enters the standby status.
From the end of the INTR To form an image on the
period until the ITB home photosensitive drum based on
position for the secondary the VIDEO signal input from
transfer is detected. the interface controller and
transfer a toner image to the
ITB.
From the end of a print To transfer secondarily a
operation until the main toner image on the ITB to a
motor stops its rotation. paper and then delivers
outpaper with toner fixed on.
Power on
CPU initialization
ASIC initialization
Fan on
Video interface communication ready
Video interface communication start
Printer ID check
Motor initial drive
* Main motor
* Toner cartridge motor
* Developing rotary motor
* Fixing motor
* Engaging motor
Memory tag (for toner cartridges, drum
cartridge) communication start
EP-87 toner cartridge
presence/life check
EP-87 drum cartridge
presence/life check
Scanner motor initial drive
Scanner motor initial drive check
Maximum image density control (D-max)
Halftone calibration detection control (D-half)
Image stabilization
calibration control
Standby
Instant a print command is input
from the interface controller; the
initial rotation starts.
drive
Residual
Failure
paper/door open
check period
check period
F-1-9
Chapter 1
0008-1693
1-7