If the library op panel touch screen becomes non-responsive, you may need to restart
the touch panel.
If the screen is blank, the display source might be set to the rear VGA port. Press the SOURCE button below the op panel and wait a couple of seconds.
The SOURCE button switches the display between the rear VGA output and the controllers or feature cards. If the display is currently at the VGA port, the initial press toggles it to the front touch screen and subsequent presses cycle through the controllers. L1 and L2 are the library controllers. F1 and F2 are feature cards.
If the op panel is still non-responsive, login to the SL4000 GUI remotely or through a direct Ethernet connection.
Click Configuration in the left navigation area of the GUI.