VI
Taxi Roof LED Display Trouble-shooting
Possible Reasons
Problems
1
.
Proper AC power to the LED display;
2
.
Set the control software as working status;
4
.
Run the control software, upload the proper program
file, and send to the receiving cards of the screen, then
save it.
2
.
Check if controller is connected properly: Green
indicator flashing, and Red indicator ON. The Green
indicator is ON or OFF in case that sending card is
damaged or no signal. In this way, the control card shall
be replaced;
Solution
on the whole
LED display
Nothing
displayed
2.The LED display is
shut by the software;
4.No display program
file on the controller.
1.No power to the
display;
3.Controller problem;
Display Chaos
2.Incorrect
resolution
setting.
1
.
Incorrect program;
2.Reset the resolution (It shall be connected to the
terminal after changing the resolution).
1
.Check if all programs are correct, or contact
the supplier if the programs are lost;
"
No Display
Found
"
when
running the
terminal
2
.
Display power failure
1
.
No signal; connection
to the SIM card;
1
.SIM card socket damaged, no network traffic to
the SIM card; Replace the card socket or SIM card
2.Connect the LED display to power.
Display
images
flashing
2.Power cable loose
.
1
.
Ribbon cable loose
;
1
.
Re-connect the ribbon cables between modules
2
.
Re-connect the power cables and fix them by screws
.
Resetting the configuration program and the display
connection program as per signal cable direction, then
send it to the display and save it.
Improper configuration
program.
Display
images
misplace or
repeated
Single
cabinet not
working
1.Power supply damage
2.Controller damage
1.Check if power supply is proper in this cabinet
2.Check if controller card is powered properly (Red
indicator ON), if there is signal transmission (Green
Indicator Flashing); Cards need to be replaced if Green
indicator ON or OFF.
Single
module not
working
1.Improper power supply;
5.No signal output from
the module before this one.
3.Input ribbon cable to this
module is damaged.
2.Ribbon cable to this
module is loosen.
4.Signal IC of this module
is damaged
1.Check if power supply voltage is proper
4.Replace a new module
5.Replace the module before this one.
2.Re-insert the loosen ribbon cables
3.Replace the input ribbon cable of this module
3.IC damaged.
1.Ribbon cable to this
module is loosen
2.Input ribbon cable to this
module is damaged
2.Replace the input ribbon cable of this module
3.Check and replace damaged IC related
1.Re-insert the loosen ribbon cables
Color missing
on the
module
Single LED
not working,
or missing
color
2.Control IC to this LED is
damaged
1.LED damage, or pins
fake-solder or short-circuit
LED
2.Replace new IC
1.Re-solder the pins of the LED or the control IC, or
replace new LEDs
2.Check the signal connection strength;
3.Check if any problems to the display modules.
1.Check if the terminal setting is correct;
1.Terminal setting not
correct
2.Weak signal of the
control system
3.Cabinet or module
The LED
display is out
of control
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