When these errors occur, the printer locks itself and refuses to print to prevent ink from leaking onto your desk. The V3600 tool is required to clear these software locks after the physical pads are serviced. Supported Canon Printer Models
Using this utility requires precision. If steps are performed out of order, you risk permanently locking the printer's mainboard, a condition colloquially known as "bricking." Phase 1: Entering Service Mode (Crucial Step) Canon Printer Service Tool V3600