NEC FA Series Installation And Maintenance Manual page 97

Led module/led display
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3-2 Display under abnormal conditions
(1) Problem with the input signal to the LED controller
To display more details, click "Monitoring", and then click "Sending card" on the screen that is displayed.
English - 95
When the display is red,
there is a problem with the
LED controller.
No video signal is being input to the LED
controller.
- Check that the LAN cable is
connected.
- Check that a video signal is being
output from the video output
equipment.
- If multiple signals are being input to
the LED controller, check the input
settings of the LED controller.

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