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238
Upgrade and Maintenance Manual
BX924
S4
System board components
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1.
fm
Ê
If BitLocker functionality is used and has been disabled before starting the
maintenance task, re-enable BitLocker as described in section
"Enabling
BitLocker functionality" on page 91
.
10.2.3 Replacing the UFM
10.2.3.1 Required tools
●
Preliminary and concluding steps:
– combination pliers and flat nose pliers
●
Replacing the UFM:
– Phillips PH0 / (+) No. 0 screw driver
10.2.3.2 Preliminary steps
Before replacing the UFM, perform the following steps:
Ê
Disable BitLocker functionality as described in section
"Disabling BitLocker
functionality" on page 66
.
Ê
Disable boot watchdog functionality as described in section
"Disabling boot
watchdog functionality" on page 67
.
Ê
If applicable, open the rack door as described in section
"Opening the rack
door" on page 51
.
Ê
Locate the desired server blade as described in section
"Locating the
defective server blade" on page 43
.
Ê
Shut down the server blade as described in section
"Shutting down the
server blade" on page 52
.
Field Replaceable Units (FRU)
Average hardware task duration: 10 minutes
Average software task duration: 5 minutes