: If you receive this error, it typically means the version of the Service Tool you are using does not support your specific printer model. Finding the Tool

While holding Power, release Resume and then press it (some models require 2 or 6 times). canon service tool v3900 download top

— help you create a feature checklist / documentation for what such a tool would do if you were building a legitimate utility. : If you receive this error, it typically

: Allows users to read and print EEPROM data to verify printer settings or check warranty status. Maintenance Tests : If you receive this error