IBM 7378, Problem Determination And Service Manual

Page: 291 / 362

Removing a hot-swap power supply
If you install or remove a hot-swap power supply, observe the following precautions.
Statement 8:
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 problem with one of these parts, contact
a service technician.
Note: If only one hot-swap power supply is installed in the server, you must turn off
the server before removing the power supply.
To remove a hot-swap power supply, complete the following steps:
1. Read the safety information that begins on page vii and “Handling
static-sensitive devices” on page 151.
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. Disconnect the power cord from the connector on the back of the power supply
that you are removing.
Chapter 5. Removing and replacing server components
273