HP TC2120 - Manual (Page 105)

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Chapter 7 Replacing Parts
Once the accessory board is installed, you may need to install or update software drivers. The drivers for
the new board are either part of your existing server software or provided on a flexible diskette (or CD-
ROM) included with the accessory board.
Power Supply
Removing the Power Supply
1. If the server is operating, power down the server.
Refer to Chapter 1‚ Controls and Indicators for instructions.
2. Disconnect the power cord and any external cables connected to the server.
If necessary, label each one to expedite re-assembly.
3. Remove the left side cover.
4. Disconnect the power cables from the system board connector and all the mass storage devices.
5. Remove the power supply:
a. Remove the four outside screws securing the power supply.
You may need a flat blade screwdriver to remove the four screws.
b. Remove the screw securing the power supply on the inside of the server.
WARNING To prevent the power supply from falling, support the power
supply with your hands when you disconnect the screw
securing the power supply on the inside the chassis. The
power supply is heavy and could hurt you or damage
components on the system board.