Lexmark C746x User Manual
55 Unsupported option in slot [x]
1
Turn the printer off.
2
Unplug the power cord from the wall outlet.
3
Remove the unsupported option card from the printer system board, and then replace it with a supported card.
4
Connect the power cord to a properly grounded electrical outlet.
5
Turn the printer back on.
56 Parallel port [x] disabled
Try one or more of the following:
•
Select Continue to clear the message. For non
‑touch‑screen printer models, press
to confirm.
The printer discards any data received through the parallel port.
•
Make sure the Parallel Buffer menu is not set to Disabled.
56 Serial port [x] disabled
Try one or more of the following:
•
Select Continue to clear the message. For non
‑touch‑screen printer models, press
to confirm.
The printer discards any data received through the serial port.
•
Make sure the Serial Buffer menu is not set to Disabled.
56 Standard USB port disabled
Try one or more of the following:
•
Select Continue to clear the message. For non
‑touch‑screen printer models, press
to confirm.
The printer discards any data received through the USB port.
•
Make sure the USB Buffer menu is not set to Disabled.
56 USB port [x] disabled
Try one or more of the following:
•
Select Continue to clear the message. For non
‑touch‑screen printer models, press
to confirm.
The printer discards any data received through the USB port.
•
Make sure the USB Buffer menu is not set to Disabled.
Troubleshooting
225