Using service tools carries inherent risks. To ensure a successful reset:

Using the Canon Service Tool V3900 without proper authorization and technical expertise can potentially damage your printer or void its warranty. Additionally, downloading or using unauthorized versions of the tool can pose security risks to your computer and printer.

| Error Code | Description | Resolution | | :--- | :--- | :--- | | | The tool cannot detect the printer. | The printer is not in Service Mode. Repeat Section 4.1 carefully. Ensure timing of the Resume button presses is exact. | | Error 005 | Unsuccessful communication/Write fail. | Disconnect power, reconnect USB to a different port, and restart the PC. Re-enter Service Mode. | | Not Supported | Wrong model for this tool version. | Verify printer model. iP2770 requires v3900; iP1900 requires v2000, etc. | | Error 009 | Ink absorber full hardware error. | Resetting the counter is not enough; physical waste ink pads may need cleaning/replacement. |