LED Screen Malfunction and solution

 LED Screen Malfunction and solution

Malfunction Status	Reasons for Malfunction	Analysis and Treatment of Malfunction
1. The entire screen is not enlightened or shows grids.	1. Whether the host computer is started 2. Whether the communication line is properly inserted. 3. Whether the transmitting card is properly inserted. 4. Whether the data line connecting media card, collecting card and transmitting card is properly connected. 5. The switch position of receiving card JP1 or JP2 is not correct.	• Start up the host computer • Properly insert the communication line. • Re-insert the transmitting card. • Properly connect the data line connecting media card, collecting card and transmitting card. • Adjust the switch position of receiving card JP1 and JP2.
2. Control system can not be found each time LED studio is started.	1. The data-collecting line between COM port and data-transmitting card is not connected or the computer’s COM port is broke.	• Connect the data line or change another computer.
3. The data at every 16 lines of the entire screen flashes or is constantly bright.	1. Check the setting up of the LED studio.	• Open up LED studio and select commissioning. Go to hardware configuration (password 168) and then select system configuration. Set the line sequence configuration into +0 or +1.
4. The entire picture sways or overlaps	1. Check the communication connecting the computer and the screen. 2. Check the DVI line of media card and transmitting card. 3. The transmitting card is broke.	• Re-insert or change the communication line. • Strengthen the DVI line insertion. • Change another transmitting card.

II. Driver Part

Malfunction Status	Reasons for Malfunction	Analysis and Treatment of Malfunction
1. Unit board is not bright.	1. Whether +5V power or GND is supplied. 2. Whether +5V power or GND shorts out. 3. Whether the OE signal of fifth pin of 138 is available. 4. Whether the OE signal connected to 245 is normal or not (turned off or shorted out).	• Give power of +5V or GND. • Disconnect the short circuit. • Provide OE signal. • Connect the turned off power and disconnect the short circuit.
2. The up-half part or low-half of a unit board is not bright or does not display properly.	1. Whether the OE signal of fifth pin of 138 is available1 2. Whether the signal of the 11th and 12th pin of 74HC595 is normal; SCLK, RCK) 3. Whether the OE signal connected to 245 is normal or not (turned off or shorted out). 4. Whether the SCLK and RCK signal of double-row pin connected to 245 is normal (turned off or shorted out).	• Provide OE signal. • Connect SCLK and RCK signal. • Connect the turned off power and disconnect the short circuit. • Connect the turned off power and disconnect the short circuit.
3. Previous line or a unit board or line of a corresponding module is not bright or does not display properly.	1. Check whether the pin of corresponding module’s line signal is insufficiently soldered or not soldered. 2. Check whether the line signal is disconnected with the corresponding pin of TIP127 or 4953 or shorted out with other signals. 3. Check whether the pull-up and pull-down resistors of the line signal is not soldered or insufficiently soldered. 4. Check whether the line signal output of 74HC138 is disconnected with the corresponding TIP127 or 4953 or shorted out with other signals.	• Fix the ones insufficiently soldered or not soldered. • Connect the turned off power and disconnect the short circuit. • Fix the ones insufficiently soldered or not soldered. • Connect the turned off power and disconnect the short circuit.

P20 Rental LED Mesh display

P20 Rental LED Mesh display

 High refresh rate, clear images without flicker or ripple
 Easy for installation and disassembling,
 Special stage can be built according to needs
 Multi-signal supported and switched
 Online power back up to ensure continual work
 Mainly used in stage background for film and television studio
 Outdoor solution, widely used in large area landscaping and colour changing

p20 Perimeter led display

p20 Perimeter led display

To reduce lighting reflection and improve contrast
 Broad vision for the audience
High refresh rate, clear images without flicker or ripple
 To protect the persistent of the player and the lamp
 The new aluminum case design for protecting the players and led cabinet
 Online power back up to ensure continual work
 IP65,Applied for stadium station
 


 P16 Perimeter led display
    Adjustalbe dip angle of the cabinet；Soft mask and soft material covered on the top can prevent the atheletes from hurting，IP65

Traffic Guiding LED Screen P16 Traffic Display

Traffic Guiding LED Screen

 P16 Traffic Display

 Display of traffic information is an important application field of the LED display, LED display with its high brightness, high reliability in airports, railway stations,docks, bus stations, highways, urban roads, car parks and other widely used, the traffic LED display traffic induced by the LED display (variable intelligence panels),the traffic route guidance display card, stop signs, variable logo mark.

      The highway variable information panels installed at the top of the highway pavement, drivers prompted the current road traffic information, such as the front of the construction of a car accident location, strong winds, fog and other warning signs, and also displays simple graphics, the speed limit value, so that drivers can better grasp the current traffic situation, to avoid traffic congestion, reduce traffic accidents.

     The highway variable intelligence panels are the equipment of the wilderness environment. Therefore,system reliability and advanced it becomes more important, based on our previous experience in the production of large variable information signs display, we will have all of the light-emitting device, electronic components are screening, aging, the installation before and after routine experiments and aging will also be the entire system, so that the entire variable information signs display system can be stable in a real environment,and reliable work. There will also be on the printed circuit boards, connectors, box, frame, link pieces appropriate protective treatment. If three anti handle, hot-dip zinc processing, spray, acid resin coated shoe deal with.
    Small variable information boards are intelligent field devices, it can display text information according to the instructions of the traffic, weather and Command and Control department anxious, such as: construction lots,drive carefully, pay attention to warning signs of safe, strong winds, fog and simple graphics. Large variable intelligence panels as Intelligent Transportation Systems (ITS), information equipment, the monitoring center computer through an integrated communication network,remote control, transmit and display a variety of graphic information. Different routes of the different sections of the situation and all kinds of traffic information to the driver's emergency release, and publicity of the traffic laws, traffic knowledge, so as to effectively divert traffic,promote traffic safety.

P10 outdoor fixed install LED display

Advertisement & Message

  Automatically adjust the screen brightness by the light-sensor control system, power saved and environmentally friendly
  High refresh rate and frame rate, vivid pictures
  Change the advertisements at any time
  Online power backup to ensure normal work
  Remote networked control
  Easy for installation，high transparency, low wind-resistance and waterproof
  widely used in building showing
 


P10 Outdoor fixed cabinet LED screen
   Outdoor advertising screen is one of the most widely used outdoor display of red, green and blue LED lights, wich can real-time, synchronous display various information, which is characterized by large angle, highbrightness, colorful,long life and energy efficiency. To display the white balance and 16,777,216 colors, thedisplay can be synchronized with the computer to display Chinese characters and English text and graphics, 2D or3D animation, video, TV, DVD and live on a variety ofvideo content.

    Each pixel includes 3 (1R1G1B), Huahai has a experience of outdoor display manufacturing , product consistency, temperature control and stability, height, color uniformity, accurate white balance. Standard outdoor cabinet has the dust and waterproof rating IP65 on the front and IP68 on the back side.
 
outdoor full color display has the high brightness, viewing angle, dustproof and waterproof, suitable for outdoor media, government departments, cultural venues, municipal facilities and other environments.

Specification		P10 outdoor fixed install LED display
Optical parameters	Bringhtness(Nit)	6500
	Grey scale(Bit)	16
	Color(Trillion)	28.1
	Color temperature(K)	6500
	Luminance angle(H/V)	120°/ 60°
	View angle(H/V)	170°/ 140°
	Contrast ratio	5000:1
	Malfunction dot rate	0.1≤‰
Module parameters	Pixel configuration	1R1G1B（346lamp）
	Pixel pitch(MM)	10
	Module resolution	16*16
	Module size(MM)	160*160
	Module weight(G)	483
	Module voltage(V)	DC4.2
	Module current(A)	2.6～3.2
	Module consumption(W)	11～14
electrical parameters	Consumption（W/㎡）	400-520
	AVE.consumption（W/㎡）	200～275
	Input voltage(V)	AC90－240
Display performance	Driver method	1/4 scan
	Refresh rate	≥600
	Frame rate(Hz)	50&60
Cabinet component	Cabinet size(MM)	960×960×150
	Cabinet weight(Kg)	45
	Protection	fr:IP65 ba:IP54
	Cabinet material	aluminum
	Cabinet flatness（MM/㎡）	≤1
Usage parameters	MTBF(H)	10000
	Lifespan(H)	100000
	Operation temperature(℃)	－20～50
	Operation humidity	10%～90％