| Symptom | Possible Fix | Risk Level | |---------|--------------|-------------| | Printer turns on, whirs, then shows F91 | Open the printer, check for paper scraps or obstruction in the carriage path. Gently move carriage manually. | Medium | | F91 appears immediately after power-on | Likely dead purge motor or logic board. Try a factory reset (varies by model—search for your model's key combo). | High | | F91 after using refillable cartridges | Reinstall original Canon cartridges. The chip logic may have triggered a protection error. | Low | | Printer was working, then F91 after moving it | The purge unit may have unseated. Turn off, unplug, wait 24 hours for ink to settle, then restart. | Low |
: This is the standard driver for high-quality office printing. The latest versions (e.g., v10.1.37.98) are compatible with Windows 7 through Windows 11 . canon f91 5800 driver
: Go to the Canon Drivers & Downloads