Lexmark MX310
Turn off the printer.
Unplug the power cord from the electrical outlet.
Remove the extra trays.
Connect the power cord to a properly grounded electrical outlet.
Turn the printer back on.
Card Copy App Does Not Show All Installed Trays
Colors Are Too Dark or Black Shading Is Covering Partial or Entire Page on the Lexmark CS310, CS410, CS510, CX310, CX410, or CX510