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Lenovo ThinkCentre M720s 10ST User Manual And Hardware Maintenance Manual page 51

Thinkcentre m720s series

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Although there are no moving parts in your computer after the power cord has been disconnected, the
following warnings are required for your safety and proper Underwriters Laboratories (UL) certification.
CAUTION:
Hazardous moving parts. Keep fingers and other body parts away.
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.
1. Remove the computer cover. See "Removing the computer cover" on page 24.
2. Remove the front bezel. See "Replacing the front bezel" on page 25.
3. Replace the power supply assembly.
Note: Ensure that you disconnect or reconnect the power supply assembly cables during the
replacement.
Figure 81. Opening the drive bay
.
Chapter 4
Replacing hardware
47

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