5B01MAXIFY MB5420

Canon MAXIFY MB5420 Error 5B01: Ink Absorber Full

The Canon MAXIFY MB5420 error 5B01 is a service notification indicating that the ink absorber—a sponge-like reservoir that collects waste ink from printhead maintenance—is nearing full capacity. This system lock prevents dangerous internal ink spills that could harm the printer's circuit boards. To understand why my Canon MAXIFY MB5420 shows error 5B01, one must evaluate the total print volume the device has processed. This robust office printer is built for longevity, but the ink reservoir is a consumable component requiring professional maintenance.

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Common causes

  • 1Internal waste ink absorber counter reached limit.
  • 2Physical saturation of the internal absorbent sponges.
  • 3Repeated forced cleaning cycles from frequent power cycling.
  • 4End of service life for the internal maintenance module.

Solutions

Quick Diagnosis

The error 5B01 displays as a hard lockout code. If you notice physical ink stains around the base of the printer, the ink reservoir is likely overflowing and requires immediate expert attention.

Step-by-step solution

  1. Review the printer manual to verify the waste ink counter status.
  2. Do not force resets using unauthorized software, as it does not physically empty the sponge.
  3. Contact a Canon-authorized service center for the physical replacement of the absorber pads.
  4. Let the certified technician perform the internal counter reset properly.

Prevention and maintenance

Leave the printer in standby mode instead of constantly turning it off. Every restart initiates a cleaning cycle, which consumes ink and shortens the life of the absorber pads significantly.

When to call a technician

This error demands professional service. Allowing the ink absorber to remain full risks damage to the motherboard and other critical electrical components.

Device technical specifications

  • Technology: Inkjet
  • Speed: 24 ipm (black), 15.5 ipm (color)
  • Connectivity: USB, Ethernet, Wi-Fi
  • Functions: Print, Copy, Scan, Fax
  • Compatible consumable: PGI-2200 Cartridges
  • Recommended use: High-volume offices
  • Drivers / official firmware

Steps to follow

  1. 1

    Check status

    Enter the settings menu to check if the waste ink counter has hit the critical limit.

  2. 2

    Reset service

    Contact technical support to perform an official internal counter reset.

  3. 3

    Hardware inspection

    If ink is visible, send the device to an authorized center for physical cleaning.

Frequently asked questions

This error occurs because the internal waste ink absorber pad counter has reached its limit to prevent internal leaks.

While software resets exist, they are not recommended, as a saturated ink pad can cause permanent hardware damage.

This unit requires PGI-2200 series cartridges. Using original OEM supplies helps keep the maintenance system cleaner.

Avoid frequent power cycling, as each start-up triggers a cleaning cycle that wastes ink and fills the internal reservoir.