e-104TEC B-EX4D2

Toshiba TEC B-EX4D2 error E-104: Thermal Head Fix

The Toshiba TEC B-EX4D2 error E-104 signals that the print head has reached an abnormal temperature. This protection mode prevents heat damage to the thermal resistors. It is commonly triggered by a dirty print head sensor or by running the printer at high-speed settings for an extended duration without pausing.

1 views

Common causes

  • 1Excessive print darkness settings.
  • 2Adhesive residue on the print head.
  • 3Thermistor failure within the assembly.
  • 4Poor airflow in the operating environment.

Solutions

Quick Diagnosis

High heat warnings are usually temporary. If the unit is cool to the touch and the error persists, the thermistor sensor may be faulty.

Step-by-Step Solution

  1. Cool down: Allow the printer to rest for 15 minutes.
  2. Clean: Clean the head with a specialized thermal printer cleaning pen.
  3. Check connection: Ensure the print head cable is securely plugged in.
  4. Reset: Power the unit back on.

Prevention and Maintenance

Adjust your print darkness settings to the minimum required for a legible image. Regular cleaning prevents adhesive buildup. Use only genuine Toshiba media.

When to Call a Technician

If the error occurs immediately upon power-up, the print head is likely defective and requires a technician's replacement.

Device Technical Sheet

  • Technology: Thermal transfer
  • Print Width: 4 inch
  • Connectivity: Serial, USB, Ethernet
  • Compatible media: B-EX4 series ribbons
  • Recommended use: Warehouse logistics
  • Drivers / support

Frequently asked questions

It signals a temperature reading outside normal ranges for the print head thermistor.

The error is a safety mechanism to prevent the thermal elements from burning out.

Use B-EX4 series thermal ribbons for best results.

Clean it whenever you change the ribbon to avoid dust buildup.

Toshiba TEC B-EX4D2 error E-104: Thermal Head Fix | Vimazdev