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new-display-ordinary-failure.htm display ordinary failure

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failure phenomena	failure reason	failure analyze and deal with
1. whole screen can't bright or have the lattice	does the control computer opened? doest the line connect well? doyou insert the sending card? does multimedia card, collectioncard, sending card connect well? collection card's jp1/jp2 switch position right or not?	open the host computermake sure the communication line connected well.reinsert the sending cardconnect well the line of multimedia card, collection card, sending card's lineadjusted well the swift of the jp1,jp2
2. whenstart the led studio can't find the controlled system.	to check if the line connect well between com connecter and data sending card. or computer's com connecter broken.	connect well those line or change your computer
3. all screen orper sixteen line's led flash	check-up the setting of the led studio	enter the led studio debugging,-hardware setting(code: 168) -system setting: setting the line's sequence to +0 or +1
4. total screen flash or double image	check the communication line between computer and led. check the multimedia card and dvisending card	re-insert the communication or change it,pin up thedvi line, replacing the sending card

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failure phenomena	failure reason	failure analyze and deal with
1. one cell board isn't bright	1. +5v power and gnd if were supplied 2. +5v power and gnd if it is short 3. if have 138 the fifth leg oe signal 4. examine the 245 connected oe signal(if it is open circuit or short circuit)	supply +5v current or gnd cut off the line which it is short circuit supply good oe signal connect well the line of open circuit, cut off the line of short circuit)
2. one cell board have one half can't be bright or abnormality	1. if have the oe signal of 138's fifth leg. 2. 74hc595's eleventh and twelfth leg's signal are normal or not? 3. examinethe connected oe signal(if it is open circuit or short circuit) 4. two line pinconnected with 245's sclk,rck signal if it is normal	1. connect well of the oe signal 2. connect well the line of open circuit, cut off the line of short circuit 3. connect well the line of open circuit, cut off the line of short circuit)
3. one cell board have someline can't be bright normal	examine if the diode false solder or forget to solder examine tip127 or4953's pin if cut of short circuit with other signal. examine if the resistancehav't solder or forget to solder. 74hc138' deferented signal if correspond with tip127 or 4953,if disconnected, or short circuit?	1. solder well of them. 2. connect well the open circuit and cut off the shout circuit line. 3. solder well of them 4. connect well the open circuit and cut off the shout circuit line.
4. one cell board bright two line at the same time.(when display text, one line display well, other line bright all the time.)	1. examine the module's two line to check if they are short circuit. 2. examine138 exported leg, fluctuate resistance, module pin,tip127's export leg if it is short circuit.	connect well the open circuit and cut off the shout circuit line.
5. half of the top part and below part's red or green light can't bright or display abnormality.	examine if the importing stitch in gear, or if it is short circuit with gnd,+5v examine importing pin to 245's signal, if they are short circuit or turnoff. ic245 broken	connect well the open circuit and cut off the shout circuit line. changer the ic

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1. phenomena: all led light flicker;
   problem: poor contact;
   solution: refastness that become flexible
2. phenomena: led obscuration
   problem: the power supply is not the same as the led voltage
   solution: make sure the voltage of them are the same;
3. phenomena: some led are not bright;
   problem:
   1. insert direction wrong;
   2. if the power supply line connected well;
   3. power supply's line connected contrary;
   solution:
   1. re-insert the line;
   2. make sure the red line connect to anode, black line connect to cathode;
   3. find out the contrary line, reconnected it.
4. phenomena: all led light are not bright;
   problem:
   1. no power supply;
   2. power supply line connected wrong.;
   solution:
   1. connected the led switch to original power supply.
   2. makesure the anode and cathode connect well.