09-12-2017 05:46 AM
I have had Error Code 1403 Wrong Print Head on my MX725 for a couple of weeks now. The printer is only 16 months old and not heavily used. I have cleaned the printhead gold contacts and mating connector with an isopropyl alcohol / trichlorotrifluoroethane solvent mix. It has made no difference.
I have found that if you set up a print job when the printer is switched off, then switch the printer on, it prints the job before locking up with the error message. This proves that there is nothing wrong with the printhead. Same thing for a scan job - it does the scan then locks up.