112 Upgrade and Maintenance Manual TX120 S3
Power supply
6.1 Standard power supply unit
6.1.1 Replacing the standard power supply unit
6.1.1.1 Required tools
● Preliminary and concluding steps: tool-less
● Replacing the PSU:
– Phillips PH2 / (+) No. 2 screw driver
6.1.1.2 Preliminary steps
Before replacing the standard PSU, perform the following steps:
I You are advised to perform this routine with the server in a horizontal
position.
Ê Disable BitLocker functionality as described in section "Disabling BitLocker
functionality" on page 79.
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 task duration: 10 minutes
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