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When the Data In indicator does not light up or flash after a print job starts, data is not being sent to the printer.
When the printer is connected to the computer using the interface cable
Check that the print port setting is correct. When connecting the printer to the computer using a parallel interface, connect using LPT1 or LPT2.
Open the printer properties dialog box, and then click the [Ports] tab.
For details about displaying the printer properties dialog box, see Displaying the Printer Driver Properties with Windows.
In the [Print to the following port(s)] list, check that the correct port is selected.
Network connection
For details about the network connection, contact your administrator.
