| Icon / Label | Function | |--------------|----------| | | Read printer EEPROM data (page count, errors, destination). | | Destination | Change region (US, JP, EMEA, CHN). Useful after mainboard swap. | | Ink Level Reset | Resets individual ink tank counters (not for chip-based cartridges). | | Cleaning | Deep cleaning cycle (stronger than normal driver cleaning). | | Test Print | Service mode nozzle check pattern. | | Roller Cleaning | Feeds paper to clean pickup roller (useful for paper jams). |
Service mode bypasses normal firmware checks: canon service tool v5103
, if:
Do not treat this as a simple software hack. Real risks exist: | Icon / Label | Function | |--------------|----------|
Canon printers track the volume of toner waste collected in a dedicated container. Once that container reaches 100% capacity, the printer stops functioning. Unlike inkjet printers that simply display a warning, laser printers enforce a hard stop to prevent toxic toner dust from spilling inside the machine. | | Ink Level Reset | Resets individual