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Troubleshooting - NEC FA Series Quick Start Manual

Fine pitch led video display indoor, led wall bundle
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5.

Troubleshooting

Table 1: Troubleshooting Solutions summarizes the most common problems you
could encounter with the appliance.
If you are unable to solve the problem with the information below, contact the NEC
DISPLAY SOLUTIONS service team: LED-support@nec-displays.com
Table 1: Troubleshooting Solutions
Problem
Nothing is displayed on all
LED modules.
Nothing is displayed on one
LED module.
No image is displayed on
one Pixel card.
Control (communication) is
not possible.
Solution
Check that power is being supplied to the LED modules.
Check that the LED controller is turned on.
Check that the LED controller has a video input signal.
Check that a LAN cable is correctly connected between the LED
controller and the LED module.
Check that the brightness is not set to 0 % (= not lit).
Check that a LAN cable is correctly connected between the LED
controller and the LED module.
The Receiving card inside the LED module may be broken.
Call a service technician.
The power unit inside the LED module may be broken.
Call a service technician.
The Pixel card may be broken. Call a service technician.
Check that the communication cable is correctly connected
between the computer and the LED controller.
Check that the LED controller is turned on.
If the communication cable is a USB cable, check that the device
driver runs correctly.
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