The hardware circuit detected overheating of the fixing main thermistor thm1 or fixing sub thermistor thm2 for 30msec or longer on end remedy 1 perform the following to clear the error copier function clear err in the service mode then turn the power switch to off and then on 2. See the slides to check the steps to fix canon ir 400 error code e803 by dialing canon technical support phone number 1 866 301 6071 to canon technical supp. The list price of the canon eos 5d is 400 dollars this snart phone is very expensive because it is also an entire personal computer and a tablet built into the phone. Code e803 0000 description the 24v output from the composite main power supply pcb is absent for 1 sec or more causes the wiring is faulty short circuit open circuit the composite power supply pcb is faulty the dc controller pcb is faulty remedy 1 connectors are the connectors j204 on the main power supply pcb and the connector j300 on the dc controller pcb connected securely. How to mend anything free repair help office appliances photocopiers error code 803 canon gp335 copier