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 It is recommended to turn off the system, including any attached
peripherals, and disconnect the system from its electrical outlet.
2 Open the system. See “Opening the System” on page 246.
3 Remove the system-board assemblies. See “Removing a System-Board
Assembly" on page 163.
4 Remove the cooling-fan cage. See “Removing a Cooling Fan” on page
248.
5 Remove the screws that secure the middle-wall bracket to the chassis.
See Figure 3-77.
6 Lift the middle-wall bracket out of chassis. See Figure 3-77.
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