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Description
The live listing for MAC Aura XB - Primary LED PCB, Calibrated 50400780 identifies a electronic assembly from Martin Professional with reference 50400780.
For 50400780, verify the board code, revision markings, connector layout, mounting holes, component orientation, and saved equipment reference directly against the original part. For 50400780, the live title and manufacturer reference should both agree with the service record.
When servicing 50400780, isolate power, use electrostatic-discharge precautions, photograph each plug, and release connectors by their housings rather than the conductors. After fitting 50400780, seat every connector and fastener, restore the original cable routing, and inspect clearances before controlled power-up.
