COPYRIGHT © 2002 CANON INC.
2000 2000 2000 2000
CANON iR1200/iR1300 Series REV. 0 AUG. 2002
CHAPTER 4 OPERATION
4-30
a. Overheating 1 (all conditions)
The CPU will identify overheating 1 if the main thermistor detects 230°C/446°F for 1 sec
or more continuously.
b. Start-Up Error 1 (start-up)
The CPU will identify start-up error 1 if a level of temperature lower than 120°C/248°F is
detected for 1 sec or more continuously 10 sec after the heater is supplied with power.
c. Start-Up Error 2 (startup/paper passage)
The CPU will identify start-up error 2 if a level of temperature 15°C/59°F lower than the
paper passage temperature control target is not detected at all 75 sec after the heater is sup-
plied with power.
d. Temperature Control Low Temperature Error (paper passage/sheet-to-sheet/rest
heating/temperature control)
The CPU will identify a temperature control low condition error if a level of temperature
lower than 120°C/248°F is detected for 1 sec or more continuously in paper passage, sheet-
to-sheet, rest heating, or temperature control state.
e. Main thermistor Open Circuit (all conditions)
The CPU will identify main thermistor open circuit if the A/D conversion value of the
output voltage from the main thermistor is in excess of a specific value for 1 sec or more.
f. Overheating 2 (all conditions)
The CPU will identify overheating 2 if the sub thermistor detects 300°C/572°F or higher
for 0.2 sec over more continuously.
g. Sub Thermistor Error Low Temperature 1 (warm-up)
The CPU will identify sub thermistor error low temperature 1 if the temperature reading is
lower than 75°C/167°F for 1 sec or more 10 sec after the heater is first supplied with power.
h. Sub Thermistor Error Low Temperature 2 (cool-down)
The CPU will identify sub thermistor error low temperature 2 if all the following condi-
tions exit when the heater is off after printing ends and the trailing edge of the paper moves
past the delivery sensor.
•
the thermistor reading is lower than 75°C/167°F when the heater is off.
•
printing has not been cancelled in the middle.
•
no error has occurred during printing.
•
the thermistor reading is lower than 75°C/167°F before the trailing edge of the paper
moves past the delivery sensor.
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