Canon CLC5000 Información técnica Pagina 166

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CHAPTER 2 NEW FUNCTIONS
COPYRIGHT
©
2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001
6.6 Protective Mechanisms
The machine is equipped with the following nine types of protective mechanisms to pre-
vent malfunction of the fixing heater and the oil heater.
6.6.1 Detecting Overheating (software)
The CPU on the DC controller PCB monitors the voltage of the upper main thermistor
(TH1), upper sub thermistor (TH2), lower main thermistor (TH3), and lower sub thermistor
(TH4), and issues the following error codes when detecting an overheating condition:
Thermistor Detection temperature Error code
Upper thermistor (TH1) 215ºC E000-0102
Lower thermistor (TH3) 208ºC E000-0202
6.6.2 Detecting Overheating (hardware)
When the overheating detection circuit on the DC controller PCB detects any of the fol-
lowing temperature readings, it issues the corresponding error codes; it will then cause the
power OFF signal (PWOFF*) to go ‘0’ so as to turn off the power switch (SW2).
Thermistor Detection temperature Error code
Upper main thermistor (TH1) 230ºC E000-0101
Upper sub thermistor (TH2) 230ºC E000-0101
Lower main thermistor (TH3) 220ºC E000-0201
Lower sub thermistor (TH4) 230ºC E000-0201
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