Lexmark CX921
After upgrading to firmware XX.081.205, the printer encounters a 900 error message with secondary crash code reason Watched process is no longer alive: com.lxk.ui.
Update to firmware 081.216. The necessary change was implemented in the Embedded Solutions Framework to fix a deadlock that caused this problem.
Réinitialisez l'imprimante lorsqu'une erreur 900.xy se produit.
Connectez votre imprimante à un réseau sans fil de manière sécurisée.