2
2
2-80
2-80
Technology > Fixing System > Various Types of Control > Fixing temperature control
Technology > Fixing System > Various Types of Control > Fixing temperature control
●
Protection function Function
Stop power distribution to the heater when the fixing heater temperature reaches an
abnormally high temperature.
[1]
[3]
[4]
[8]
[7]
[12]
[2]
[13]
[14]
OR
[5]
[6]
[9]
External heating
HP-SNS signal
[10]
[11]
Fixing motor
lock signal
External heating
upper roller
Fxing assembly
DC controller PCB (PCB1)
Fixing heater
driver PCB
(PCB57)
External heating
lower roller
Fixing roller
Pressure roller
CPU
ASIC
1 CPU monitoring circuit
Monitor runaway of CPU.
2 Connection detection
Detect missing of the thermistor connector
3 Heater error detection
Detect excessive temperature increase of the heater.
4 External heating roller HP detection Detect attachment of the external heating roller when the
fixing motor stops.
Prevent the external heating roller from continuing to
come into contact with the fixing roller.
5 Triac short detection
Detect damage / short of the triac.
6 Excessive temperature increase
detection (hardware detection)
Detect excessive temperature increase of a heater.
7 Heater error detection
(hardware detection)
Detect abnormal temperature of the heater.
8 Heater control circuit
Turn off the heater.
9 Relay control circuit
Turn off the AC relay.
10 Heater OFF circuit
Turn off the heater.
11 Relay OFF circuit
Turn off the AC relay.
12 AC relay
Block the AC line.
13 Thermo switch
Block the AC line.
14 Detection of excessive temperature
increase (software detection)
Detect excessive increase of the thermistor software.
Turn off the heater / AC relay.
F-2-110
T-2-75
Summary of Contents for imagePRESS 1110
Page 242: ...3 3 Periodical Service Periodical Service Periodical service item ...
Page 655: ...5 5 Adjustment Adjustment Overview When replacing parts Major adjustment ...
Page 944: ...8 8 Service Mode Service Mode Overview COPIER FEEDER SORTER BOARD Situation Mode ...
Page 1555: ... Service Tools General Circuit Diagram General Timing Chart Operator Maintenance Appendix ...