IBM System x3300 M4 Installation And Service Manual page 414

CAUTION:
Never remove the cover on a power supply or any part that has the following
label attached.
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 with one of these parts, contact a service
technician.
To replace a fixed power supply, complete the following steps:
Note: You must install the fan assembly before removing or installing the power
supply.
396
System x3300 M4 Type 7382: Installation and Service Guide
1. Read the safety information that begins in Safety and "Installation guidelines"
on page 36.
Attention: Static electricity that is released to internal server components
when the server is powered-on might cause the server to halt, which might
result in the loss of data. To avoid this potential problem, always use an
electrostatic-discharge wrist strap or other grounding system when you work
inside the server with the power on.
2. Turn off the server (see "Turning off the server" on page 24) and all attached
peripheral devices. Disconnect all power cords; then, disconnect all external
cables from the server.
3. Unlock and remove the left side cover (see "Removing the left-side cover" on
page 39).
4. Remove the fan assembly (see "Removing the fan assembly" on page 42)
5. Remove the air baffle (see "Removing the air baffle" on page 41).
6. Remove the existing fixed power supply (see "Removing a fixed power
supply" on page 394).
7. Touch the static-protective package that contains the fixed power supply; then,
remove the fixed power supply from the package and place it on a
static-protective surface.
8. Put down the new fixed power supply into the position of the server correctly
and tighten the 4 screws from the rear side of the server as the illustration
showed.