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This procedure requires that you handle components that are sensitive to static
Caution -
discharge. This sensitivity can cause the component to fail. To avoid this problem, ensure that
you follow antistatic practices as described in
Ensure that all power is removed from the server before removing or installing FB-
Caution -
DIMMs. You must disconnect the power cables before performing this procedure.
DIMM filler cards are required in all empty slots in the memory mezzanine tray.
Caution -
DIMM filler cards are not required on the motherboard.
Locating a Faulty FB-DIMM
The system Service Required LED lights if the system detects a FB-DIMM fault.
Use the showfaults command to identify faulty FB-DIMMs. See
Faults" on page
29.
Use the FB-DIMM fault locator button on the motherboard to identify faulty FB‐ DIMMs.
1.
Prepare the server for FB-DIMM removal. See:
■
"Power Off the Server" on page 59
"Disconnect Cables From the Server" on page 60
■
"Remove the Server From the Rack" on page 60
■
"Perform Antistatic Measures" on page 61
■
■
"Remove the Top Cover" on page 62
"Remove the Memory Air Duct" on page 83
■
Disconnect all power cables from the server
2.
3.
Press the Fault Locator button on the motherboard to activate the FB-DIMM
status LEDs
(Figure
Any faulty FB-DIMMs will be indicated with a corresponding amber fault LED on the
motherboard.
"Perform Antistatic Measures" on page
4-20).
Chapter 4 • Replacing Motherboard Assembly Components
Locating a Faulty FB-DIMM
"Detecting
(Figure
4-20).
61.
101
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