Canon imagePRESS C1 Service Manual - page 566
Chapter 9
9-29
User mode: System management settings>Device management settings>Refresh the fixing roller (*)
- Setting the refresh level of the fixing roller
Service mode: COPIER>OPTION>USER>FX-CLNLV (level 2)
User mode: System management settings>Device management settings>Automatic refresh level of the fixing roller (*)
Setting range: -5 (30 sec) to +5 (330 sec) [Default: 0 (180 sec)]
* By selecting COPIER>OPTION>BODY>IMGC-ADJ, and set 'IMGC-ADJ' as '1', items will be displayed on the 'Device management Setting' screen.
9.6 Protective Functions
9.6.1 Protective Circuit
0012-0992
imagePRESS C1 P / imagePRESS C1 / imagePRESS C1+ (Printer) / imagePRESS C1+
F-9-30
Protection methods
Functions
[1]
CPU monitor block
Monitors the CPU's erratic behaviors
[2]
Thermistor overheating detection block
Detects the overheating of the heater.
[3]
Triac short detection block
Detects the triac short and malfunction of transistor for turning ON/OFF the heater.
[4]
Heater simultaneous activation prevention
block
Protects in case CPU behaves erratically and attempts to turn on all heaters simultaneously.
[5]
Outside heating roller HP detection
Prevents the damage caused by contacting the outside heating roller with the fixing roller while the fixing
motor stops.
[6]
AC relay
Shut off the AC line in case of the triac short.
[7]
Thermo switch
Shut off the AC line in case of the triac short or AC relay fault.
Outside heater ON
Outside
heating roller
Fixing roller
Fixing belt
(inlet roller)
Outside heating HP sensor
To I/O
Outside heating (main)
Outside heating (sub)
Fixing (main)
Belt (sub)
Fixing (sub)
Thermistor
overheating error signal
Outside heater triac state signal
Outside heater ON
Outside main triac state signal
Outside sub triac state signal
Belt heater triac state signal
Fixing main heater ON
Fixing sub heater ON
Belt heater ON
To CPU
[1] CPU monitor circuit
[3] Triac short detection
Fixing motor lock signal
AC driver PCB
ASIC
Fixing sub Tr short detection
Outside heating Tr short detection
Thermistor fault detection
Outside heating roller HP detection
Fixing main heater ON
Fixing sub heater ON
Belt heater ON
Belt Tr short detection
Fixing main Tr short detection
Hardware timer
Relay control
Gate
CPU
Thermo SW
Thermo SW
Thermo SW
CPU reset
4-heater
simultaneous
activation
prevention
Triac control
Triac control
Triac control
Triac control
DC controller PCB
Thermistor
overheating
detection
Triac
deactivation
AC relay
[5]
[2]
[7]
[4]
[8]
[6]
[9]