Basic Sequence Of Operation (At Power-On; High-Humidity Start-Up Mode) - Canon iR6570 series Service Manual

Main motor
(M2)
Drum motor
(M1)
Pre-exposure
LED (LED1)
Primary charging
Laser
Developing clutch
(CL1)
Developing bias
(DC)
Developing bias
(AC)
Bias roller
Pre-transfer
charging (DC)
Pre-transfer
charging (AC)
Transfer charging
Separation
charging (DC)
Separation
charging (AC)
Fixing motor
(M3)
Fixing heater
(IH)
*1: After a shift to standby, the fixing target temperature is decreased in 5-deg C increments at specific time intervals. When a specific temperature is
reached, the fixing heater and the fixing motor are turned on and off to maintain the temperature.

3.2.3 Basic Sequence of Operation (at power-on; high-humidity start-up mode)

Main power
switch ON
WMUPR
Interval Description
WMUPR (warm-up) From when the main power is turned on until the fixing roller
temperature reaches a
specific level and, in addition, the potential control of the
photosensitive drum ends.
CNTR (control rotation) The machine executes potential control of the photosensitive drum.
For each mode (i.e.,
copier, printer), the machine executes VD control (to adjust the
primary discharge
current) and Vl control (to adjust the laser output), and determines Vdc
(developing
bias).
PSTBY (print standby) The machine is in a state in which it is ready to accept a copy/print
request signal.
CNTR
75 sec or less (approx.)
215 deg C
F-3-5
T-3-3
Chapter 3
PSTBY
*1
0009-6337
3-5