B200PIXMA TS6420as

Canon PIXMA TS6420as error B200: Critical Fault Fix

The Canon PIXMA TS6420as error B200 is a status code signifying an electrical issue with the print head. If you are asking why is my Canon PIXMA TS6420as showing error B200, the system is detecting voltage instability, typically caused by overheating. This is a severe condition that may signal hardware failure.

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Common causes

  • 1Overheating: Prolonged use without adequate ink cooling.
  • 2Electrical Short: Liquid or ink contamination on the print head contacts.
  • 3Sensor Failure: Voltage regulation sensors detect irregular current usage.
  • 4End of Life: Natural failure of the thermal print head circuits.

Solutions

Quick Diagnosis

This error acts as a protection mechanism. The printer will stop all operations instantly to prevent board damage. It is a known issue related to print head health.

Steps to follow

  1. 1

    Power off and disconnect

    Unplug the printer and leave it off for 10 minutes to dissipate internal charge.

  2. 2

    Remove ink cartridges

    Take out the cartridges and wipe any excess ink from the electrical contacts.

  3. 3

    Check print head

    Examine the print head surface for ink buildup that could cause a short circuit.

  4. 4

    Test reboot

    Turn the printer back on; if the B200 error remains, the print head is likely damaged.

Frequently asked questions

Error B200 is a critical warning indicating a voltage or electrical fault within the print head, often due to overheating.

It is often a permanent hardware fault. You can attempt a hard reset, but it frequently requires replacing the print head.

Low-quality or leaking cartridges can lead to electrical shorts that trigger this error.

If the error persists after contact cleaning, the repair cost for the print head often exceeds the value of a new unit.