Various Control Mechanisms; Fixing Temperature Control - Canon LBP6000 Series Service Manual

Chapter 2
Name
[1] Pressure roller
[3] Thermistor
[5] Fixing film unit
- Fixing heater:
- Thermistor:
- Temperature fuse:

2.8.2 Various Control Mechanisms

2.8.2.1 Fixing Temperature Control

2.8.2.1.1 Fixing Temperature Control

LBP3100 / LBP3010B
This control is to keep the heater in the fixing film unit to the specified temperature.
The engine controller monitors the fixing heater temperature detection signal (FSRTH) and outputs the fixing heater drive signal (FSRD) according to the detected
temperature. The fixing heater drive PCB controls the fixing heater according to this signal to keep the fixing heater temperature within the target values.
The following is the block diagram of this control.
2-36
[2]
This fixing assembly is equipped with 1 heater.
Fixing heater (H1): For heating the fixing film (ceramic heater)
This fixing assembly is equipped with 1 thermistor.
Main thermistor (TH1): For controlling the fixing heater temperature (contact type thermistor)
This fixing assembly is equipped with 1 temperature fuse.
Temperature fuse (TP1): For detecting the fixing heater overheat (non-contact type fuse)
When the heater overheats, the fuse melts to cut the power supply to the heater.
[4]
[3]
F-2-46
T-2-8
[2] Temperature fuse
[4] Fixing heater
[6] Fixing assembly
0019-7539