Canon iR5055, Service Manual

Page: 111 / 646

Chapter 3
3-3
F-3-3
3.2 Basic Sequence
3.2.1 Basic Sequence of Operation (at power-on; 30-sec start-up mode)
0015-4347
iR5065 / iR 5055 / iR5075 / iR5075N / iR5065N / iR5055N
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)
0015-4348
iR5065 / iR 5055 / iR5075 / iR5075N / iR5065N / iR5055N
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.
Drive circuit
Control circuit
Reference
signal
generation
circuit
Clock pulse
generation
circuit
J631 J4005
DC controller
PCB
DC power supply
PCB
1
2
1
2
24V
GND
Main motor
(M2)
J632 J108
1
2
3
4
A8
A7
A6
A5
MAIN_M_GND
MAIN_M_CLK
MAIN_M_5V
MAIN_M_ON
A4 5
MAIN_M_FG
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