¶ 1. Phenomenon description
During startup or printing process, the machine reported an error with Key: 111.
¶ 2. Cause analysis
The communication between the mainboard and the nozzle adapter board is abnormal.
¶ 3. Troubleshooting and solution
3.1 Check whether the nozzle drag chain line is loose and has no binding tape.
3.2 Check the motherboard/nozzle adapter board for anomalies, such as component damage, burn marks, etc.
3.3 The nozzle adapter board is abnormal. (Poor contact/burnt/soldering)
3.4 The motherboard is abnormal. (Poor contact/burnt/soldering)