If your Canon MB5040 suddenly refuses to print and shows a maintenance or service warning, the ink absorber counter may have reached its limit.

During head cleaning, surplus ink is routed to internal absorber pads. Canon MB5040 monitors this via a counter and can lock printing at a threshold.

This page is prepared for Canon MB5040. Service mode instructions are shown only when a matching series procedure is known.

Typical Signs

• ‘Ink Absorber Full’ / ‘Service Required’ message
• Support/service code (varies by series)
• Printing blocked after cleaning cycles
• Reset required to continue printing

Clear the Ink Absorber / Waste Ink Counter

Completing the reset clears the internal ink absorber counter stored in printer memory and restores normal operation.

Maintenance Reminder

If absorber pads are truly saturated, ignoring maintenance can lead to ink leakage inside the printer. The counter reset only removes the software lock.

Reset tools and instructions

For best results, avoid rushing button presses—consistent timing matters.

Common Fixes

• Try a different USB cable/port if using PC software.
• Close other Canon printer utilities while resetting.
• Power-cycle the printer and try again.
• Repeat the service mode steps carefully (timing matters).
• Use the correct Stop/Reset press count for your series.

Frequently Asked Questions