172 Upgrade and Maintenance Manual BX900 S2
Midplane
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Ê Release the locking mechanism of the rear chassis by pressing in the
springs (see circles) on both sides.
Ê Put your fingers in the handle openings (1).
Ê Pull the rear chassis out of the system unit housing.
12.2.4 Removing the midplane
Figure 69: Screw positions
Ê Loosen the screws that fasten the midplane to the back of the rear chassis.
Ê Carefully remove the midplane from the rear chassis.