Canon LBP3010 Series, Service Manual, Page: 34 / 146

Chapter 2
2-2
T-2-1
2.2.2 Power-On Sequence
0019-5929
LBP3100 / LBP3010B
The sequences from the power-ON to the STBY period are described below.
1) Power-ON
2) CPU initialization
3) Video interface communication start
4) Residual paper check
Detecting paper presence by each sensor signaling.
5) Initial drive for main motor
6) Initial drive for fixing heater
Controlling fixing temperature targeting for 120 deg C.
7) Initial drive of the scanner motor.
8) High-voltage control
Detect cartridge presence after primary charging AC bias is applied.
Cleaning transfer roller.
9) Failure/Abnormality check
Detecting fixing unit failure and door open during above periods.
2.2.3 Basic Sequence of Operation
0025-1136
LBP6000 / LBP6000B
The engine controller controls the operation sequence.The following table provides an outline of machine operation occurring from when the power switch is turned
on to when printing ends and motors stop, indicating the purposes of intervals and engine operation. For details of various loads, see the timing chart.
T-2-2
2.2.4 Power-On Sequence
0025-1137
LBP6000 / LBP6000B
The sequences from the power-ON to the STBY period are described below.
1) Power-ON
2) CPU initialization
3) Video interface communication start
4) Residual paper check
Detecting paper presence by each sensor signaling.
Interval Purpose Remarks
WAIT
(Wait) From power-ON until initial drive for
main motor is completed. To clear potential from the drum
surface and to clean the transfer roller.
Also to bring the heater temperature
up to the targeted temperature. Detect whether the Toner cartridge is
installed or not.
STBY
(Standby) From the end of the WAIT period or
the LSTR period until the print
command is sent from the main
controller. Or, from the end of the
LSTR period until power switch is
turned OFF. To keep the printer ready to print.
INTR
(initial
rotation) From the input of the print command
from the main controller until the pick-
up solenoid is turned ON. To stabilize the photosensitive drum
sensitivity in preparation for printing.
Also to clean the transfer roller.
PRINT
(print) From the end of the INTR period until
the top of page sensor detects the
trailing edge of paper. To form image on the photosensitive
drum based on the VIDEO (/VD0,
VD0) signals input from the main
controller, and to transfer the toner
image onto paper.
LSTR
(last rotation) From the end of PRINT period until
the Main motor stops. To deliver the last paper completely
out of the printer. Return to the INTR period as soon as
another print command is sent from the
main controller.
Interval Purpose Remarks
WAIT
(Wait) From power-ON until initial drive for
main motor is completed. To clear potential from the drum
surface and to clean the transfer roller.
Also to bring the heater temperature
up to the targeted temperature. Detect whether the Toner cartridge is
installed or not.
STBY
(Standby) From the end of the WAIT period or
the LSTR period until the print
command is sent from the main
controller. Or, from the end of the
LSTR period until power switch is
turned OFF. To keep the printer ready to print.
INTR
(initial
rotation) From the input of the print command
from the main controller until the pick-
up solenoid is turned ON. To stabilize the photosensitive drum
sensitivity in preparation for printing.
Also to clean the transfer roller.
PRINT
(print) From the end of the INTR period until
the top of page sensor detects the
trailing edge of paper. To form image on the photosensitive
drum based on the VIDEO (/VD0,
VD0) signals input from the main
controller, and to transfer the toner
image onto paper.
LSTR
(last rotation) From the end of PRINT period until
the Main motor stops. To deliver the last paper completely
out of the printer. Return to the INTR period as soon as
another print command is sent from the
main controller.