• Čeština
  • Español
  • Italiano
  • Deutsch
  • Polski
  • Français

TMC driver shorted #04304 (MMU)

Relevant for:
Last updated 5 months ago
This article is also available in following languages: 

What happened?

The Original Prusa MMU3, and MMU2S are equipped with a control board containing Trinamic (TMC) drivers to manage the motion from each of the connected motors.
With firmware 3.0.0 or higher, in case a short circuit is detected on the Pulley TMC driver, the printer will show the message "Short circuit on the Pulley TMC driver. Check the wiring and connectors. If the issue persists contact support".

Error name: TMC driver shorted 

Error code: #04304

How to fix it?

Do not touch, move, connect, or disconnect any cables or electronic components while the printer is on. This can result in irreversible damage! 

Access the MMU control board, and inspect it visually to spot any incorrect assembly, or damage on its surface, on the cables, and attempt reseating the cables to ensure their connection. In particular, make sure that the PD-board add-on is attached to the control board. 

If the issue is not solved with these checks, please contact our customer support

Was this article helpful?


Still have questions?

Still have questions?

If you have a question about something that isn't covered here, check out our additional resources.
And if that doesn't do the trick, you can send an inquiry to [email protected] or through the button below.

Contact us