Lexmark CX860
When the printer encounters a scanner error, it will power off the printer and when it comes back on, an "840.02 Scanner Disabled by Admin" error displays on the printer screen.
The "840.02 Scanner Disabled by Admin"is displayed on the printer to allow you to use other non-scanning features such as printing, etc.
LEGACY ID: SO8003
Lexmark CX82x/86x, MX72/82: 843.00 Scanner Error Message
Invalid credentials error appears when cloning a printer for Lexmark Markvision 2.3