Basic Sequence; At Time Of Power - Canon iR C6800 Series Service Manual

7.3 Basic Sequence

7.3.1 At Time of Power On
The main power switch is pressed while the surface temperature of the fixing roller is lower than 100 deg C (i.e., the
main power switch is pressed after the machine has been left alone for a long time, such as in the morning).
<Characteristics>
Immediately before starting the sequence, the machine detects the home position of the developing rotary and
removes static charges from the drum surface.
It takes about 530 sec before the machine enters the standby state after its main power switch has been pressed.
While warm up rotation is taking place, the machine executes the following image stabilization control
mechanisms: potential control, primary transfer ATVC control, secondary transfer ATVC control,D max control,
D half control*1.
*1: when the power is tuned on with the color print counter reading 500 or higher.
Main switch
ON
Drum/ITB motor
(M2)
Pre-exposure
LED (LED1)
Primary charging
bias
Grid bias
Developing
rotary motor (M5)
Stray toner
collection roller bias
Black developing
bias (DC)
Black developing
bias (AC)
Black developing
clutch (CL3)
Color developing
bias (DC)
Color developing
bias (AC)
Color developing
clutch (CL1)
Pre-transfer charging
bias
Primary transfer bias
Secondary transfer
outside roller shift
motor (M20)
Secondary transfer
bias
ITB cleaner shift
motor (M21)
Patch image sensor
(PS2)
F-7-4
<if the main power switch is turned on with the surface temperature of the fixing roller is 100 deg C or higher>
It takes about 2 min or less before the machine enters the standby state after its main power switch has been pressed
(i.e., the surface temperature of the fixing roller reaches 200 deg C).
In principle, image stabilization control is not executed.
WMUPR
CNTR
Potential control
Rotation, suspension during automatic adjustment
PSTBY
Primary transfer ATVC
D-Max control
Chapter 7
0004-7867
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