12 Troubleshooting; Table 15: Troubleshooting Solutions; Table 16: Signal Light Codes - NEC FE Series User Manual
Fine pitch led video display indoor
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Also See for FE Series:
- Quick start manual (72 pages) ,
- User manual (85 pages) ,
- Installation and maintenance manual (131 pages)
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12 TROUBLESHOOTING
Table 15 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 15: Troubleshooting Solutions
Problem
No power
No picture
No signal input
Module not working
Table 16: Signal Light Codes
Light
Meaning
Power supply on
green
Power supply off
Data connection ok
red
Data connection bad
Signal on Controller
lost
blue
not relevant
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.
1
2
[1 ms]
Signal Interval [in sec]
3
4
5
6
[1 ms]
7
8
9
[1 ms]
83
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