Canon imageRUNNER ADVANCE C5051 Series Service Manual page 125

2
Technology■>■Fixing■System■>■Controls■>■Protection■features
■ 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
•■ 0002■■Error■in■engagement■(it■is■highly■possible■that■grease■is■scattered■on■the■surface■of■the■
cam.)
2 Technology■>■Fixing■System■>■Controls■>■Protection■features
Fixing pressure sensor (PS30)
Cam
Fixing Motor
M21
Sensor flag
Film unit
Pressure
plate
Pressure roller
Disengaged
F-2-124
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
■ 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)
2-89
Error
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Clear
Unnecessary
Unnecessary
T-2-53
2-89