5c20PIXMA Pro-100

Canon PIXMA Pro-100 error 5c20: Solution Guide

The Canon PIXMA Pro-100 error 5c20 flags a fault within the purge unit assembly, which is responsible for keeping the printhead nozzles clean. This error often prevents the printer from initializing, protecting the sensitive hardware from further mechanical damage caused by an obstruction in the ink cleaning station.

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Common causes

  • 1Heavy ink sludge buildup in the purge station.
  • 2Debris preventing the wiper blade from moving.
  • 3Mechanical damage to the purge unit gear drive.
  • 4Incorrect cartridge seating interfering with head carriage.

Solutions

Quick Diagnosis

Error 5c20 is typically triggered when the purge mechanism hits resistance. Why is my Canon PIXMA Pro-100 showing error 5c20? Usually, dried ink buildup or a small piece of photo paper is blocking the movement of the wiper blade in the cleaning station.

Step-by-step Solution

  1. Shut down the printer and unplug the power cable while it is still on to leave the carrier unlocked.
  2. Gently slide the printhead carrier to the middle.
  3. Inspect the cleaning unit on the far right for dried ink or foreign debris.
  4. Carefully remove any visible buildup with a cotton swab.

Maintenance and Prevention

Perform a nozzle check every two weeks and keep the unit in a clean environment to ensure the purge station works smoothly.

When to Call a Technician

If the error returns immediately upon booting the printer, the purge unit's internal gears might be stripped, necessitating professional maintenance.

Equipment Data

  • Technology: 8-ink Dye-based
  • Compatible Supplies: CLI-42 Ink Series
  • Connectivity: Wi-Fi, Ethernet, USB
  • Drivers / firmware official: https://www.usa.canon.com/support/p/pixma-pro-100

Steps to follow

  1. 1

    Unplug unit

    Disconnect the power cord while the printer is active to unlock the printhead.

  2. 2

    Manual inspection

    Examine the right-side purge station for dried ink or paper debris.

  3. 3

    Clean area

    Wipe away residue with a clean, lint-free cloth.

Frequently asked questions

The 5c20 error indicates a mechanical obstruction in the purge unit mechanism.

Yes, it prevents the printer from cleaning the printhead, leading to permanent nozzle clogs.

Always use genuine CLI-42 ink. Third-party inks often have higher viscosity and cause these purge unit failures.

Keep the printer away from heat sources and perform regular self-cleaning cycles.