TX120 S3 Upgrade and Maintenance Manual 325
System board and components
14.2.3 Replacing the UFM board
14.2.3.1 Required tools
● Preliminary and concluding steps:
– Phillips PH2 / (+) No. 2 screw driver
– combination pliers and flat nose pliers
● Replacing the UFM:
– Phillips PH1 / (+) No. 1 screw driver
14.2.3.2 Preliminary steps
Before replacing the UFM board, perform the following steps:
Ê Disable BitLocker functionality as described in section "Disabling BitLocker
functionality" on page 79.
Ê Disable boot watchdog functionality as described in section "Disabling
SVOM boot watchdog functionality" on page 80.
Ê Locate the defective server as described in section "Locating the defective
server" on page 50.
Ê Shut down the server as described in section "Shutting down the server" on
page 58.
Ê Disconnect the AC power cord from the system.
Ê Remove the server cover as described in section "Opening the server" on
page 61.
Field Replaceable Units (FRU)
Average hardware task duration: 10 minutes
Average software task duration: 5 minutes
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