Oki MC563 User Manual page 158

Cause
The output port of the printer driver is Select the output port for connecting
incorrect. the LAN cable or USB cable.
The machine is processing data from Wait until printing is complete.
another interface.
[Received invalid data] is displayed Press the
on the operator panel and the on the operator panel, select [Admin
machine does not print. Setup] > [Print Setup] > [Print menu]
> [Printer Adjust] > [Timeout Injob],
and then select a longer time. The
factory default setting is 40 seconds.
Solution Reference
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9. Troubleshooting