Film Unit Engagement / Disengagement Control; Protection Features - Canon imageRUNNER ADVANCE C5045 Series Service Manual

2

Film unit engagement / disengagement control

To prevent deformation of the fixing film / pressure roller caused by heat and pressure when
the drive of pressure roller is stopped, and also to improve jam recovering performance, the
film unit is disengaged from the pressure roller under the following conditions:
Fixing pressure sensor (PS30)
Sensor flag
Fixing Motor
M21
Cam
Film unit
Pressure
plate
Pressure roller
Engaged
Execution conditions / timing
The film unit is disengaged when the power is
•
turned ON
•
At recovery from sleep mode
At recovery from jam removal
•
•
When the front cover/right cover is closed.
Related Error Codes
E009 (Error in engagement/disengagement of film unit)
•
0000 Error in engagement
•
0001 Error in disengagement
2
Fixing pressure sensor (PS30)
Cam
Fixing Motor
M21
Sensor flag
Film unit
Pressure
plate
Pressure roller
Disengaged
F-2-127 F-2-127
Execution conditions / timing
When the power is turned OFF
•
At jam detection when the power is turned ON
•
When the mode is shifted to sleep mode (when
•
the power switch on the control panel is OFF,
when the specified period of time has passed
since the mode has shifted to sleep mode)
When a jam occurs
•
•
When an error occurs
T-2-49 T-2-49

Protection features

Code Description
E001 Detection of abnormal high temperature
0000 When main thermistor 1/2 detects 255 deg C or more for 0.2 sec.
0001 When sub thermistor 1/2 detects 275 deg C or more for 0.2 sec
0003 When the thermistor detects temperature beyond the upper value:
Main thermistor 2 = 265 deg C
Main thermistor 1 = 264 deg C
Sub thermistor 1 = 280 deg C
Sub thermistor 2 = 280 deg C
E003 Detection of low temperature
0000 When main thermistor 1/sub thermistor 1/sub thermistor2 detects 21
to 50 deg C for 3 sec.
0001 When main thermistor 1 detects "(target temperature – 70 deg C)" or
less for 5 sec.
0002 When the thermistor detects disconnection (any thermistor detects 20
deg C or less for 3 sec)
0003 When the control fails to be completed 60 sec after the start of warm-
up rotation.
E004 Detection of abnormal fixing heater drive circuit
0000 When disconnection of the thermistor is detected.
E808 Detection of abnormal fixing drive circuit/power supply
0000 Zero-cross error (faulty low voltage circuit)
2-84
Error
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Unnecessary
Unnecessary
T-2-50 T-2-50
2-84