Step 1: Preparing lower chassis

The MR-B3RB should look like this unit after opening the box.

MR-B3RB

The lower chassis comes partially assembled with the side skirts attached, the side plastic attached, the PDB partially wired, and the LED lighting installed and wired. Remove screws that hold on the side plates and also the screws that hold on the top plate. The screws holding the side skirts and top plate on top will be replaced with Thumbscrews . KEEP these M3x5mm screws for attaching the MR-CANHUBK344 to the top plate later

Lower chassis out of the box.

Remove top plate screws

Use a hex screwdriver or Allen Key and remove all top screws securing the top plate to the metal frame and carefully set them aside.

View with top plate removed

Remove the side skirt screws.

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