First, you need to remove the front bezel. Loosen the two screws on the front of the U box, and remove the bezel. To replace the clock swapperboard, first remove both clock boards out of the U box as explained in the specific video. Unfastened the screw in the center of the clock swapper board.
Pull the black metal lever to the left side and pull it to remove the clock swapper board out of the U box. Check the connectors of the clock swapper board for any damage before inserting it back into the chassis. Insert the new clock swapperboard into the U box. Push the black metal lever back into its original position and fasten the screw.
Pull back the two clock boards into their original positions. Make sure that after you insert the two modules, both boards are parallel to the chassis.
