Canon iR5570 Series, Service Manual

Page: 106 / 684

Chapter 3
3-4
3.2 Basic Sequence
3.2.1 Basic Sequence of Operation (at power-on; 30-sec start-up mode)
0009-3720
F-3-4
*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.
T-3-2
3.2.2 Basic Sequence of Operation (at power-on; low-temperature start-up mode)
0009-6336
Interval Description
WMUPR (warm-up) For 30 sec after the main power is turned on.
CNTR (control rotation) The machine executes potential control for the photosensitive drum. In
the case of
30-sec start-up mode, the machine measure the potential for a single
rotation of the
drum, and adjusts only the target output. (VL control)
PSTBY (print standby) The machine is in a state in which it is ready to accept a copy/print
request signal.
Main power
switch ON
CNTR
WMUPR PSTBY
Main motor
(M2)
Drum motor
(M1)
Primary charging
Pre-exposure
LED (LED1)
Developing clutch
(CL1)
Developing bias
(DC)
Developing bias
(AC)
Pre-transfer
charging (DC)
Pre-transfer
charging (AC)
Separation
charging (DC)
Separation
charging (AC)
Fixing motor
(M3)
Fixing heater
(IH)
Laser
Transfer charging
Bias roller
30 sec (approx.)
205 deg C
*1