Troubleshooting; Table 16: Troubleshooting Solutions - NEC FA Series User Manual

11 TROUBLESHOOTING

Table 16 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:

Table 16: Troubleshooting Solutions

Problem
No power
No picture
No signal input
Module not working
LED-support@nec-displays.com
Solution
Check if electric power is switched on.
Check if screen is connected properly to the electric power
system.
Adjust the contrast and brightness settings.
Check if the screen saver is activated.
Check the green LED of the Receiving card is flickering regularly
or not (fast flickering means no signal).
1. Check if the cable connector assembly is stable.
2. Check whether the cable is short-circuited.
3. Check the power of the Receiving card.
In case the above three points do not fix the problem, please
exchange the Receiving card.
Use a multimeter to test the module. The voltage should be 4.2 V.
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