Basic Sequence; Basic Sequence Of Operation (At Power-On; 30-Sec Start-Up Mode); Basic Sequence Of Operation (At Power-On; Low-Temperature Start-Up Mode) - Canon iR5055 Series Service Manual

3.2 Basic Sequence

3.2.1 Basic Sequence of Operation (at power-on; 30-sec start-up mode)

iR5065 / iR 5055 / iR5075 / iR5075N / iR5065N / iR5055N
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.
Interval
WMUPR (warm-up)
CNTR (control rotation)
PSTBY (print standby)

3.2.2 Basic Sequence of Operation (at power-on; low-temperature start-up mode)

iR5065 / iR 5055 / iR5075 / iR5075N / iR5065N / iR5055N
J4005
24V
1
DC power supply
GND
2
PCB
J108
MAIN_M_CLK
DC controller
A8
MAIN_M_GND
PCB
A7
MAIN_M_5V
A6
MAIN_M_ON
A5
MAIN_M_FG
A4
Main power
switch ON
Description
For 30 sec after the main power is turned on.
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)
The machine is in a state in which it is ready to accept a copy/print request signal.
J631
1
2 Drive circuit
J632
1
2
Control circuit
3
4
5
F-3-3
WMUPR
30 sec (approx.)
F-3-4
T-3-2
Main motor
(M2)
Clock pulse
generation
circuit
Reference
signal
generation
circuit
PSTBY
CNTR
*1
205 deg C
Chapter 3
0015-4347
0015-4348
3-3