Lenovo System x3100 M4 Installation And Service Manual page 227

Hazardous voltage, current, and energy levels are present inside any component that has this label
attached. There are no serviceable parts inside these components. If you suspect a problem with one
of these parts, contact a service technician.
To remove a non-hot-swap power supply on 4U server models with non-hot-swap power supplies, complete
the following steps.
1. Read the safety information in
2. Turn off the server and all attached devices; then, disconnect all power cords and external cables.
3. Carefully turn the server on its side so that it is lying flat, with the cover facing up.
Attention: Do not allow the server to fall over.
4. Remove the side cover (see
5. Remove the air duct.
6. Remove the heat sink.
7. Disconnect the hard disk power cables from the backplate.
8. Disconnect the cables from the power supply to the system board and all internal components. Note the
routing of all power-supply cables; you will need to route the power-supply cables the same way when
you install the power supply.
Attention: Support the power supply while you remove the mounting screws. After the screws are
removed, the power supply is loose and can damage other components in the server.
9. While you support the power supply, remove the screws that secure it to the chassis; then, lift the power
supply out of the chassis. Save the screws to use when you install the replacement power supply.
"Safety" on page v and
"Removing the side cover" on page
"Installation guidelines" on page
145).
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Chapter 6 Removing and replacing components
30.
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