: Users can print or save EEPROM data to diagnose internal hardware issues or verify printer settings.
He knew the hardware was fine, but the internal counter had reached its digital limit. To the manufacturer, the printer was e-waste. To Elias, it was the only way to finish his daughter’s graduation portfolio by morning.
The printer should print a page (D=000.0) confirming the reset.
Some open-source projects emulate the service tool protocol over USB. This is for advanced users only.
Every Canon inkjet printer has a built-in waste ink counter. When the printer detects the absorbent pads are saturated (even if they aren't physically full), it locks up and displays an error message such as "5B00" or "5B01" . The Service Tool is the only way to reset this counter without replacing the mainboard.
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