Lexmark C720 Service Manual - Page 98

5024-001 Message 54 Par x ENA Connection Lost 54 Serial Option x Error Description Action An external network adapter (ENA) that was once connected to the specified parallel port is no longer responding. The printer only recognizes the missing connection when the printer is first turned On. Ensure the cable connecting the ENA and the printer is securely attached. Turn the printer Off and then On again to see if the printer recognizes the connection. Press Go to clear the message. The printer erases any reference to the ENA and then resets. A serial interface error has been detected (framing or parity). This error usually indicates the serial link has not been set up correctly. x represents optional serial port 1 through 3. Press and hold Select and then press Return to determine the cause of the host interface error. When the serial error is displayed, the reporting of other serial errors is suppressed until interface parameters are changed or the printer is turned off. Check the interface: • Verify that the correct cable is used. • Make sure the serial interface parameters (protocol, baud, parity, data bits) are correct. • Press Go to clear the message and continue printing the job. The print job may not print correctly. • Reset the printer. Press to access the job menu. Select Reset Printer. 2-18 Service Manual