Canon Error E000, E001,E002, E003, E007

I described in a previous post that E000, E001, E002, E003 and E007 are fixing unit temperature error codes. Lets go into more detail now.
Fixing unit is a necessary part of every photocopier and laser printer. It applies high temperature and pressure to melt the toner particles into the fibers of the copy paper. The temperature of a fixing unit must be sufficient to adequately melt the toner particles. Usually, an electronic component called Thermistor is used to measure and control the temperature. If temperature does not reach to a specific level within a predetermined time, it sends signal to the main control board to stop the machine and display error code.
Fixing error codes should be reset by a professional only. Thermistors, heater lamps, thermostats and other parts must be examined carefully before resetting the E000, E001, E003 and E007.Failure to do so may result in severe damage.
How to reset E000, E001, E003 and E007
Canon IR2016, IR2020
Enter the service mode by pressing “additional function” key, “2” and “8” keys in that order. SSSW will display. Press “OK” key.

Change Bit switch 1, bit 0 (might display as the first one on the left using number keys) status, (change 1 to 0 or 0 to 1).

 Press “OK” than Press “Stop” or “Additional Function key” to end service mode or restart the machine.
Canon IR2270/IR2870/IR3570/IR4570/IR5070/IR5570/IR6070/IR6570
Enter the service mode (Press “Additional Function” key, Press “2” and “8” simultaneously, press “Additional Function” key again).
Go to COPIER—-FUNCTIONS—–CLEAR—-ERR. Here you can reset all error codes on by one.
Canon IC-MF6530/6550/6560/6580
No reset procedure is required, replacing the fuser is the only repair.
Canon D860 series
Press Additional Function key and the “#” key in that order. Go to Printer (number 7), select “Set”, Select “Printer reset” and press “set”.