The maintain flow of LED display

A-Control systemM

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 utp line
" 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 prompt no signals from the control system
com to data sending cards. 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 debugging it .The setting up of hardware or system .

4.The whole picture shake or appear 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 cannot be lightened, check if the connection between the normal PCB and abnormal PCB is well connected.
or the IC 245 is working regularly
Several PCB in longitudinal is not lightened, please check if the power work in order.
Several PCB in longitudinal is not lightened, please check if the power work in order.
+5vto GND is in short circuit.

2 One line of PCB or the concerned the module can’t show regularly

Check the pin if the concerned modules have empty jointing.
Check if the resistance of the line have empty jointing

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

Check if the two concerned line is 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.