Canon MF3110 - ImageCLASS Laser Multifunction Service Manual

Also see for imageCLASS MF3111: Software guide Basic guide Specification

Contents

Chapter 22-112.5.2.2 Detecting a Fault in the Fixing Assembly 0002-8630The CPU identifies a fault in the fixing assembly for the following conditions (a. thorough g.) and operates asdescribed:1. the CPU causes the fixing heater drive signal to go Low to cut off the power to the fixing heater.2. the CPU causes the relay drive signal to go Low to turn off the relay.3. the CPU, if it detects a fault while printing is under way, discharges the paper being picked up or moved at thetime, and immediately turns off the main motor, scanner motor, and highvoltage system and puts the printer unitin an error state.a) the reading of the main thermistor does not exceed 50 deg C within 2.34 sec after the startup temperature controlmechanism is started.b) the CPU detects that the reading of the main thermistor remains 235 deg C or more for 1 sec continuously whilefixing temperature control is under way.c) the CPU detects that the reading of the main thermistor remains 100 deg C or less for 1.2 sec continuously whilepaper passage temperature control is under way; or the CPU detects that the reading of the main thermistor remains50 deg C or less for 0.3 sec continuously while betweensheets temperature control is under way.d) the CPU detects that the reading of the main thermistor remains less than 20 deg C for 0.3 sec continuously whilefixing heater temperature control is under way.e) the temperature of the main thermistor does not exceed 100 deg C within 20 sec after the start of startuptemperature control.f) the CPU detects that the reading of the sub thermistor remains less than 35 deg C for 0.15 sec continuously whilefixing heater temperature control is under way.g) the CPU detects that the reading of the sub thermistor remains 320 deg C for 0.15 sec continuously while fixingheater temperature control is under way.