Leading
LED
Applications
Leading
LED
Applications
CR Series
UserManual
Preparation tools: Multi-meter, Module front service tools, Screwdriver, etc.
Remove the back cover and HUB board from the back side of the cabinet to access the PCB board as the
modules can be accessed from the front. All the power supply, receiving card, and the HUB board can be
serviced by removing back cover.
After finishing cabling the cabinets, use a multi-meter to test the AC input (L/N/PE) and DC output (VCC/GND) to
determine whether there is a short circuit. If a short circuit has been found, please examine the circuit carefully.
Power up the cabinets only after making sure all the circuits are working properly.
5. Maintenance
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5.1 Preparation Tools
5.2 Rear Maintenance
5.3 Test for short circuit
Back cover
Power box
HUB board
Adapter plate
Panel
Light board
Receiving card
