29 KL II Series User Manual
6.4 Product maintenance precautions
6.4.1 Precautions for switch on /off LED screen
Turn on the screen: first turn on the control computer to make it run normally, and then turn on the
LED display.
Turn off the screen: first turn off the power of the LED screen, turn off the control software, and then
turn off the computer correctly; (first turn off the computer without turning off the display screen, it will
cause the screen to appear bright spots, burn the lamp, and have serious consequences)
The interval between switching screens should be greater than 5 minutes;
Avoid turning on the screen in the state of full white screen, because it is the maximum power state
at this time, and its impact current to the entire power distribution system is the largest.
6.4.2 Precautions for power supply
The LED module is powered by DC +5V (working voltage: 4.2~5.2V), AC power is prohibited; the
positive and negative poles of the power supply terminals are strictly prohibited to be reversed (note:
once reversed, the product will be burnt out and even cause serious fire);
Power supply voltage of LED display: 220V±10% Frequency: 50HZ±5%;
Safe and reliable earth contact, reliable isolation between the earth wire and the neutral wire, and
keep the power supply away from high-power spares;
If abnormalities such as short circuit, tripping, wire burning, smoke, etc. are found, the power-on test
should not be repeated, and the problem should be found in time;
Keep the power supply stable, and do grounding protection to avoid lightning strikes, do not use it
under harsh natural conditions, especially strong lightning weather;
The large screen power supply must be supplied step by step, because the maximum power state of
the entire screen will have an impact on the entire power distribution system;
The LED display screen is not allowed to play the full white screen with the highest brightness for
more than half an hour, so as not to cause excessive current, power cord heating, LED light damage,
and affect the life of the display screen. It is recommended to play dynamic videos;
During the use of LED display products, the power supply should not be turned on and off
continuously, and there should be at least 1 minute between the two operations;
Non-professionals are forbidden to touch the internal wiring of the large screen of the LED display to
avoid electric shock or damage to the wiring.
6.4.3 Notes on cleaning
Regular cleaning and maintenance: The indoor fine pitch LED display screen will be used for a long
time, and more dust will accumulate on the screen. This needs to be cleaned regularly and in time to
prevent it from affecting the viewing effect;
To c l ean the s u rface of t h e mod ul e , pleas e u se a so ft b r ush an d w i pe gen tl y. I t i s f orbidde n t o use
any liquid substance to clean the surface of the LED module, otherwise the LEDs may be damaged;
Wipe correctly: the surface of the large LED display screen cannot be wiped with alcohol or directly
with a damp cloth. It is recommended to use brushes and vacuum cleaners to remove dust.
6.4.4 Moisture-proof and storage requirements
Storage temperature requirements: ambient temperature -20
≤t≤50
. After the package is opened,
the LED products must be stored in an environment with a temperature of <30
and a humidity of
<70%RH;
According to the environmental conditions of the display screen and the control part, avoid insect
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