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Led Display Maintenance Progress

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Led Display Maintenance Progress

Led Display Maintenance Progress

 

 

 

A. Control system

 

1. The whole screen is black or appears pane picture

• PC is on or off;

• The UTP line correctly connected;

• Sending cards is well inserted;

• Data line between display cards and control cards well connected;

• Receiving cards JP1 or JP2 is incorrect turn on the CPU;

• Insert the UPT line;

• Re-insert sending cards;

• Connect the data line between display cards control cards and sending cards;

• Adjust the switch between JP1 and JP2;

• Computer display is protected or not, the display show black or blue;

 

2. Every time when you start up the LED studio, it prompts no signals from the control system

• The line isn’t connected or the com is ruined. Connect the data line or change the computer;

 

3. If the whole screen last lightened, please check the settings about the studio

 

• Start-up the LED studio and debug it, then set up of hardware or system;

 

4. The whole picture shakes or appears superposed picture please check the UTP line between computer and screen

• Check the line between display cards and sending cards;

• Ruin of sending cards. Reinsert the UTP or fix the DVI line, then change the sending cards;

 

B. Driving

 

1 .PCB module is not lightened

• Several PCB can’ be lightened horizontal line, please check if the connection between the normal PCB and abnormal PCB is well connected;

• Or the IC 245 is working regularly;

• Several PCB is not lightened in vertical line. Please check if the power works in order.

• If it were supply +5v or the GND were supply +5v;

• +5vto GND is in short circuit;

 

2. One line of PCB or the relevant the module isn’t show regularly

• Check the modules of relevant pin have empty jointing;

• Check if the resistance of signal line has empty jointing;

 

3. There are two line lightened at the same time. (One of it shows regularly, another last lightened)

• Check if the two concerned lines are in short circuit;

 

4. The upper or nether of red and green light isn’t lightened or showed regularly. PCB is short of color

• Check if there is data transferred from 245 R.G B;

• Check if output pin of normal 595 and abnormal input pin of 595 were connected well;

• Check the pin of input is regularly or GND and +5 V is in short circuit;

 

 

Pub Time : 2016-07-21 15:11:27 >> News list
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