ViewSonic LDM216-251 Quick Start Manual page 16

Installing the LED Modules
Install each LED Module onto the Cabinets, being sure to match the corresponding
numbers on the Module to the Cabinet.
Please wear Anti-Static Gloves before handling the LED modules.
Ensure each Module is flush and that there is little to no gap between each. It may be
necessory to gently tap the module to make it flush.
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