Replacing Leds - EuroLite LSD User Manual

9.2 Replacing LEDs

In case one of the following situations occurs check and replace the LEDs if necessary:
1. Replace the LED if a single pixel does not work or displays irregular colors. For this purpose, remove the
rear protection cover with a screw driver, take out the PCB with the LED and replace the broken LED
with a new one and solder it. Reattach the protection cover.
2. If one vertical LED column does not work properly (point 1 in the figure): Remove the rear protection
cover with a screw driver, take out the PCB with the LED and check the wiring. If one of the wires is
loose solder it on the PCB and reattach the protection cover.
3. If two vertical LED columns do not work properly (point 2 in the figure): Remove the rear protection cover
with a screw driver, take out the PCB with the LED and check the wiring. If none of the wires is loose or if
there is no short circuit, open the box marked Data Processor Box and check if the counterpart
connector on the PCB is properly connected.
4. If a horizontal LED row does not work properly (point 3 in the figure): Remove the rear protection cover
with a screw driver, take out the PCB with the LED and check the wiring. If one of the wires is loose,
solder it on the PCB and reattach the protection cover.
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