Servicing Field-Replaceable Units 139
Servicing the Motherboard
Note – If you are replacing faulty motherboard, you must set diag_mode to normal
or off before performing this procedure.
This topic includes the following:
■“Remove the Motherboard” on page139
■“Install the Motherboard” on page142
■“Motherboard Fastener Locations” on page143
Related Information
■“POST Parameters” on page30
■“Servicing CMP/Memory Modules” on page102
■“Servicing PCIe Cards” on page96
■“Servicing the Service Processor” on page124
■“Servicing the Fan Tray Carriage” on page133
■“Motherboard Fastener Locations” on page143

▼ Remove the Motherboard

Before you begin, complete these tasks:
■Read the section, “Safety Information” on page 63.
■Power off the server, using one of the methods described in the section, “Powering
Off the System” on page 67.
■“Disconnect Power Cords From the Server” on page68
■“Remove the Server From the Rack” on page71
■“Perform Electrostatic Discharge – Antistatic Prevention Measures” on page73
■“Remove the Top Cover” on page73
■“Remove a PCIe Card” on page96
Note – You must remove all PCIe cards. Note the location of all PCIe cards so you
can install them in the correct slots during reassembly.