IBM 884155U User Manual page 32

If you install or remove a 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.
Complete the following steps to install the 670-Watt hot-swap power-supply option:
1. Read the safety information beginning on page v and "Installation guidelines" on
page 11.
2. Remove the filler panel from the power supply 2 opening.
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xSeries 236 Type 8841: Hardware Maintenance Manual and Troubleshooting Guide