¶ 1. Phenomenon Description
The screen displays "Error, key: 111, Unknown Exception"
¶ 2. Cause Analysis
The communication between the main board and the nozzle adapter board is abnormal.
¶ 3. Troubleshooting and Solution
¶ 3.1 Check Nozzle Drag Chain
Check whether the nozzle drag chain cable is loose or connected in the wrong direction.
¶ 3.2 Check Mainboard/Adapter Board
Check whether there are any abnormalities on the mainboard/printer adapter board, such as damaged components, burn marks, etc.
¶ 3.3 Check Nozzle Cable
Check whether the nozzle cable is damaged or short-circuited. If not, just reissue the nozzle adapter plate. (Poor contact/burnt/soldering)
¶ 3.4 Reissue Nozzle Board
Reissue the nozzle board and the problem is still the same. Finally, reissue the main board. (Poor contact/burnt/soldering)
After checking the above steps, if the problem still cannot be solved,contact after-sales service cs@creality.com,please