Dell PowerEdge M520, Owner'S Manual

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Figure 88. Back View of the Midplane
1. I/O module connector 2. planar connectors (3)
3. blower module connectors (4)
Installing The Midplane
CAUTION: Many repairs may only be done by a certified service technician. You should only perform
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your
warranty. Read and follow the safety instructions that came with the product.
1. Angle the side of the midplane with the planar connectors, and slide the midplane into the chassis.
The planar connectors align with the chassis slots.
2. Rotate the other side of the midplane until the midplane is aligned with the two securing pins on the chassis.
3. Press the midplane to the chassis, until it engages with the securing pins, and is firmly seated.
4. Replace the following:
a) blower module bay
b) power pass-through board
c) system board
d) power distribution board
e) PCIe cage
f) hard-drive backplane
g) backplane expander board
h) cooling-fan assembly
i) cooling shroud
5. Close the system.
6. If applicable, place the system upright on a flat, stable surface and rotate the system feet outward.
7. Replace the following:
a) blower modules
b) I/O module
c) power supplies
d) hard drives
e) server modules
8. Reconnect the enclosure to its electrical outlet and turn the enclosure on, including any attached peripherals.
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