¶ 1. Phenomenon Description
The screen displays "Error, key: 2000,Unknown exception".
¶ 2. Cause Analysis
¶ 2.1 The main board and the nozzle board suddenly lost communication
¶ 2.2 Internal error, which needs to get the log to locate the problem
¶ 3.Troubleshooting and Solution
¶ 3.1 Remove the nozzle cover and replug the nozzle connection cable
If it cannot be solved after plugging and unplugging, replace the nozzle connection cable.
¶ 3.2 Export logs to the developer for analysis
If it occurs during the boot process, please follow the steps to skip self test.