Lexmark 5028-135 CS720

Entering Invalid engine mode

This mode allows the printer to load the correct firmware code.

1. Turn off the printer.
2. From the control panel, press and hold 3, 4, and 6 while turning on the printer.
3. Release the buttons after 10 seconds.

Entering the Service Engineer (SE) menu

This contains several functions that a service engineer may need in order to diagnose and fix problems on the printer.

To access the SE menu, press Back, Left arrow, Back, and Left arrow on the control panel.

General SE

This setting allows you to save a log file to a USB drive.
Enter the Service Engineer (SE) menu, and then navigate to:
General SE > Capture Logs to USB Drive

Network SE

Enter the Service Engineer (SE) menu, and then select Network SE.
Note: Use these settings as directed by the next level of support.

Fax SE

Use this menu for the fax transmission and fax reception service checks.
Enter the Service Engineer (SE) menu, and then select Fax SE.
Note: Use these settings as directed by the next level of support.

Scan SE

This setting displays the current scanner registration values for each scanner source (flatbed, ADF front, ADF rear).

Enter the Service Engineer (SE) menu, and then navigate to:
Scan SE > Scanner Info