What happened?
On the Prusa CORE One, and on the Original Prusa MK4/S, MK3.9/S, MK3.5/S, the I2C bus is used for the xBuddy board to communicate with other printer components. The components have different states, including a busy state: if this particular state occurs while data is being received by the xBuddy board, the printer will show the message: "HAL detected an I2C busy when receiving data via I2C."
Error name: EEPROM I2C Receive Busy
Error code: #31316 (CORE One) #26316 (MK4S) #13316 (MK4) #27316 (MK3.9S) #21316 (MK3.9) #28316 (MK3.5S) #23316 (MK3.5)
How to fix it?
Restarting the printer is expected to resolve the error, and this is not expected to occur again. In case a restart does not resolve it, please contact our customer support, we will take it from here.
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