Fan/Motor Control; Drum Motor Failure Detection; Etb Motor Failure Detection; Fixing Motor Failure Detection - Canon i-SENSYS LBP5300 Series Service Manual

Chapter 2
2) Laser/Scanner unit
3) Motors
4) High-voltage power supply PCB
5) Fan motor
6) Memory controller
7) Write/Read EEPROM
c. Motor driver IC (IC401/IC802/IC803)
The motor driver ICs control each motor in response to the commands from the CPU or the ASIC.
d. Reset IC (IC1002)
The reset IC monitors +3.3V voltage and resets the CPU and the ASIC when the power is turned ON.
d. EEPROM(IC1007)
The EEPROM stores various backup data.

2.8.2.3 Fan/Motor Control

/ i-SENSYS LBP5360 / i-SENSYS LBP5300
The DC controller PCB serves to control 49 motors.
The following shows the specifications of the various motors used in the machine:
Name
Feed motor
M drum motor
C drum motor
Y drum motor
Bk drum motor
Motor
ETB motor(M5)
Fixing motor(M1)
Duplexing reverse motor
Duplexing feed motor
Exhaust fan
Fan
Duplex cooling fan

2.8.2.4 Drum motor failure detection

/ i-SENSYS LBP5360 / i-SENSYS LBP5300
The DC controller determines the drum motor failure and notifies the video controller of "E012 (The drum motor is faulty)", when it encounters the following con-
ditions.
1) Drum motor start-up abnormality
The interval of the DRUM MOTOR SPEED signal does not settle the specified interval after 2.5 seconds of the drum motor drive start.
2) Drum motor rotation abnormality
The interval of the DRUM MOTOR SPEED signal stays irregular interval for 2 seconds and longer after once it has settle the specified interval.

2.8.2.5 ETB motor failure detection

/ i-SENSYS LBP5360 / i-SENSYS LBP5300
The DC controller determines the ETB motor failure and notifies the video controller of "E012 (The ETB motor is faulty)", when it encounters the following con-
ditions.
1) ETB motor start-up abnormality
The interval of the ETB MOTOR SPEED signal does not settle the specified interval after 3.5 seconds of the ETB motor drive start.
2) ETB motor rotation abnormality
The interval of the ETB MOTOR SPEED signal stays irregular interval for 2 seconds and longer after once it has settle the specified interval.

2.8.2.6 Fixing motor failure detection

/ i-SENSYS LBP5360 / i-SENSYS LBP5300
The DC controller determines the fixing motor failure and notifies the video controller of "E014 (The fixing motor is faulty)", when it encounters the following
conditions.
1) Fixing motor start-up abnormality
The interval of the FIXING MOTOR SPEED signal does not settle the specified interval after 2.5 seconds of the fixing motor drive start.
2) Fixing motor rotation abnormality
The interval of the FIXING MOTOR SPEED signal stays irregular interval for 2 seconds and longer after once it has settle the specified interval.

2.8.2.7 Exhaust fan failure detection

/ i-SENSYS LBP5360 / i-SENSYS LBP5300
The DC controller determines the exhaust fan failure and notifies the video controller of "E804 (The exhaust fan is faulty)", when the FAN LOCK signal is kept
for 10 seconds continuously.
2-40
To drive printer feed roller
(M4)
(M6)
(M7)
To drive developing roller, Photosensitive drum, and stirrer
plate
(M8)
(M9)
To drive ETB and transfer roller engagement/
disengagement
To drive fixing pressure roller, delivery roller, developing
roller, engagement/disengagement, and pressure roller
alienation
To drive duplexing reverse roller
(M11)
To drive duplexing feed roller
(M10)
To exhaust heat from printer inside
(FM1)
To exhaust heat duplexing unit
(FM2)
T-2-6
Purpose
Failure
Type
Detection
Stepping motor No
DC motor Yes
DC motor Yes
DC motor Yes
Stepping motor No
Stepping motor No
DC motor Yes
DC motor Yes
0013-8421
0013-8422
0013-8423
0013-8424
0013-8425