These unofficial tools generally allow users to perform several vital functions, with the most common being:
While holding Power, release Resume and press it (some models require 2 or 6 times). canon service tool v3800 best
To use the service tool successfully, you cannot simply plug the printer in while it is turned on normally. You must manually force the printer into first. Follow these exact steps to ensure you do not lock your EEPROM permanently. Step 1: Enter Service Mode Hardware Sequence These unofficial tools generally allow users to perform